Table of Contents

Per-User Configuration Overview

General Operational Processes
Operational Processes with IP Address Pooling
Deleting Downloaded Pools
Supported Attributes for AV Pairs

AAA Server Configuration for a per-User Configuration Task List

Configuring a Freeware TACACS Server for per-User Configuration
Configuring a CiscoSecure TACACS Server for per-User Configuration
Configuring a RADIUS Server for per-User Configuration

Monitoring and Debugging per-User Configuration Settings
Per-User Configuration Examples

TACACS+ Freeware Examples

IP Access Lists and Static Routes Using Virtual Profiles over ISDN BRI
IPX per-User SAP Filters, Using IPXWAN and Virtual Profiles by a Synchronous Interface

RADIUS Examples

IP Access Lists and Static Routes Using Virtual Profiles over ISDN BRI
IPX per-User SAP Filters, Using IPXWAN and Virtual Profiles by a Synchronous Interface

Configuring per-User Configuration

This chapter describes the per-user configuration, a large-scale dial solution. It includes the following main sections:

• Per-User Configuration Overview

• AAA Server Configuration for a per-User Configuration Task List

• Monitoring and Debugging per-User Configuration Settings

• Per-User Configuration Examples

This set of features is supported on all platforms that support Multilink PPP (MLP).

A virtual access interface created dynamically for any user dial-in session is deleted when the session ends. The resources used during the session are returned for other dial-in uses.

Per-User Configuration Overview

Per-user configuration provides a flexible, scalable, easily maintained solution for customers with a large number of dial-in users. This solution can tie together the following dial-in features:

• Virtual template interfaces, generic interface configuration and router-specific configuration information stored in the form of a virtual template interface that can be applied (cloned) to a virtual access interface each time any user dials in. This configuration is described in the chapter "Configuring Virtual Template Interfaces" in this publication.

• AAA per-user security and interface configuration information stored on a separate AAA server and sent by the AAA server to the access server or router in response to authorization requests during the PPP authentication phase. The per-user configuration information can add to or override the generic configuration on a virtual interface.

• Virtual profiles, which can use either or both of the two sources of information listed in the previous bullets for virtual interface configuration. When a user dials in, virtual profiles can apply the generic interface configuration and then apply the per-user configuration to create a unique virtual access interface for that user. This configuration is described in the chapter "Configuring Virtual Profiles" in this publication.

The per-user configuration feature provides these benefits:

General Operational Processes

In general, the per-user configuration process on the Cisco router or network access server proceeds as follows:

1. The user dials in.

2. The authentication and authorization phases occur.

• If AAA is configured, the router sends an authorization request to the AAA server.

• If the AAA server has information (attribute-value or AV pairs, or other configuration parameters) that defines a configuration for the specific user, the server includes it in the information in the approval response packet.

• Figure 9 illustrates the request and response part of the process that happens when a user dials in, given that AAA is configured and that the AAA server has per-user configuration information for the dial-in user.

• The router looks for AV pairs in the AAA approval response.

• The router caches the configuration parameters.

Note TACACS servers treat authentication and authorization as two phases; RADIUS servers combine authentication and authorization into a single step. For more detailed information, refer to your server documentation.

3. A virtual access interface is created for this user.

• The router finds the virtual template that is set up for virtual profiles, if any, and applies the commands to the virtual access interface.

• The router looks for the AV pairs to apply to this virtual access interface to configure it for the dial-in user.

• The AV pairs are sent to the Cisco IOS command-line parser, which interprets them as configuration commands, and applies them to configure this virtual access interface.

When the user ends the call , the virtual access interface is deleted and its resources are returned for other dial-in uses.

---

Note The use of virtual profiles can modify the process that occurs between the user dial-in and the use of AAA configuration information. For more information, see the chapter "Configuring Virtual Profiles" in this publication.

---

Operational Processes with IP Address Pooling

During IP Control Protocol (IPCP) address negotiation, if an IP pool name is specified for a user, the network access server checks whether the named pool is defined locally. If it is, no special action is required and the pool is consulted for an IP address.

If the required pool is not present (either in the local configuration or as a result of a previous download operation), then an authorization call to obtain it is made, using the special username:

pools-nas-name 
 

aaa configuration config-name nas1-pools-definition.cisco.us
 

On a TACACS+ server, the entries for an IP address pool and a user of the pool might be as follows:

user = nas1-pools {
     service = ppp protocol = ip {
        pool-def#1 = "aaa 1.0.0.1 1.0.0.3"
        pool-def#2 = "bbb 2.0.0.1 2.0.0.10"
        pool-def#3 = "ccc 3.0.0.1 3.0.0.20"
        pool-timeout=60
    }
}
 
user = georgia {
    login = cleartext lab
    service = ppp protocol = ip {
                  addr-pool=bbb
    }
}
 

On a RADIUS server, the entries for the same IP address pool and user are as follows:

nas1-pools      Password = "cisco" User-Service-Type=Outbound-User
        cisco-avpair = "ip:pool-def#1=aaa 1.0.0.1 1.0.0.3",
        cisco-avpair = "ip:pool-def#2=bbb 2.0.0.1 2.0.0.10",
        cisco-avpair = "ip:pool-def#3=ccc 3.0.0.1 3.0.0.20",
        cisco-avpair = "ip:pool-timeout=60"
 
georgia Password = "lab"
        User-Service-Type = Framed-User,
        Framed-Protocol = PPP,
                cisco-avpair = "ip:addr-pool=bbb"

---

Note This entry specifies a User-Service-Type of Outbound-User. This attribute is supplied by the network access server to prevent ordinary logins from using the well-known username and password combination of nas1-pools/cisco.

---

Pools downloaded to a Cisco network access server are not retained in nonvolatile memory and automatically disappear whenever the access server or router restarts. Downloaded pools can also be made to timeout automatically by adding a suitable AV pair. See the next section and the pool-timeout attribute in Table 5 for more information. Downloaded pools are marked as dynamic in the output of the show ip local pool command.

Deleting Downloaded Pools

To delete downloaded pools, you can do either of the following:

• Manually delete the definition from the network access server. For example, if "bbb" is the name of a downloaded pool, you can enter the Cisco IOS no ip local pool bbb command.

Deleting a pool definition does not interrupt service for current users. If a pool is deleted and then redefined to include a pool address that is currently allocated, the new pool understands and tracks the address as expected.

• Set an AV pair pool-timeout value; this is a more desirable solution.

The pool-timeout AV pair starts a timer when the pool is downloaded. Once the timer expires, the pools are deleted. The next reference to the pools again causes an authorization call to be made, and the pool definition is downloaded again.

This method allows definitions to be made and changed on the AAA server and propagated to network access servers.

Supported Attributes for AV Pairs

Table 5 provides a partial list of the Cisco-specific supported attributes for AV pairs that can be used for per-user virtual interface configuration. For complete lists of attributes of Cisco-specific, vendor-specific, and TACACS+ supported attributes, see the Cisco IOS Security Configuration Guide and Cisco IOS Security Command Reference publication.

Table 6 provides examples for each attribute on an AAA TACACS+ server.

Table 7 provides examples for each attribute on an AAA RADIUS server.

AAA Server Configuration for a per-User Configuration Task List

The configuration requirements and the structure of per-user configuration information is set by the specifications of each type of AAA server. Refer to your server documentation for more detailed information. The following sections about TACACS and RADIUS servers are specific to per-user configuration:

• Configuring a Freeware TACACS Server for per-User Configuration (As Required)

• Configuring a CiscoSecure TACACS Server for per-User Configuration (As Required)

• Configuring a RADIUS Server for per-User Configuration (As Required)

See the section "Monitoring and Debugging per-User Configuration Settings" later in this chapter for tips on troubleshooting per-user configuration settings. See the section "Per-User Configuration Examples" at the end of this chapter for examples of creating RADIUS and TACACS servers.

Configuring a Freeware TACACS Server for per-User Configuration

On a TACACS server, the entry in the user file takes a standard form. In the freeware version of TACACS+, the following lines appear in order:

• "User =" followed by the username, a space, and an open brace

• Authentication parameters

• Authorization parameters

• One or more AV pairs

• End brace on a line by itself

The general form of a freeware TACACS user entry is shown by the following general example:

user = username {
     authentication parameters go here
     authorization parameters go here
}
 

The freeware TACACS user entry form is also shown by the following examples for specific users:

user= tx
  Password= cleartext welcome
  Service= PPP protocol= ip {
        ip:route=10.0.0.0 255.0.0.0
        ip:route=11.0.0.0 255.0.0.0
        ip:route=12.0.0.0 255.0.0.0
        ip:inacl#5=deny 20.0.0.1
}
 
user= frox
  Password= cleartext lab
  Service= PPP protocol= ip {
        ip:addr-pool=bbb
}
 

For more requirements and detailed information, refer to your AAA server documentation.

Configuring a CiscoSecure TACACS Server for per-User Configuration

The format of an entry in the user file in the AAA database is generally name = value. Some values allow additional subparameters to be specified and, in these cases, the subparameters are enclosed in braces ({}). A simple example follows of an AAA database showing the default user, one group, two users that belong to the group, and one user that does not:

# Sample AA Database 1
unknown_user = {
  password = system #Use the system's password file (/etc/passwd)
}
group = staff {
  # password for staff who do not have their own
  password = des "sefjkAlM7zybE"
  service = shell {
    # allow any commands with any attributes
    default cmd = permit
    default attribute = permit
  }
}
user = joe {  # joe uses the group password
 
  member = "staff"
}
user = pete {  # pete has his own password
  member = "staff"
  password = des "alkd9Ujiqp2y"
}
user = anita {
  # Use the "default" user password mechanism defined above.
  service = shell {
    cmd = telnet {  # allow telnet to any destination
    }
  }
}
 

For more information about the requirements and details of configuring the CiscoSecure server, see the CiscoSecure UNIX Server User Guide.

Configuring a RADIUS Server for per-User Configuration

On a RADIUS server, the format of an entry in the users file includes the following lines in order:

• Username and password

• User service type

• Framed protocol

• One or more AV pairs

Note All these AV pairs are vendor specific. To use them, RADIUS servers must support the use of vendor-specific AV pairs. Patches for some servers are available from the Cisco Consulting Engineering (CE) customer-support organization.

The structure of an AV pair for Cisco platforms starts with cisco-avpair followed by a space, an equal sign, and another space. The rest of the line is within double quotation marks and, for all lines but the last, ends with a comma. Inside the double quotation marks is a phrase indicating the supported attribute, another equal sign, and a Cisco IOS command. The following examples show two different partial user configurations on a RADIUS server.

tx      Password = "welcome"
        User-Service-Type = Framed-User,
        Framed-Protocol = PPP,
        cisco-avpair = "ip:route=10.0.0.0 255.0.0.0",
        cisco-avpair = "ip:route=11.0.0.0 255.0.0.0",
        cisco-avpair = "ip:route=12.0.0.0 255.0.0.0",
        cisco-avpair = "ip:inacl#5=deny 20.0.0.1"
 
frox    Password = "lab"
        User-Service-Type = Framed-User,
        Framed-Protocol = PPP,
        cisco-avpair = "ip:addr-pool=bbb"

Monitoring and Debugging per-User Configuration Settings

Per-user configuration information exists on AAA servers only and is configured there, as described in the "AAA Server Configuration for a per-User Configuration Task List" section.

For more information about configuring an application that can tie AAA per-user configuration information to generic interface and router configuration, see the chapter "Configuring Virtual Profiles" in this publication. Virtual profiles are required for combining per-user configuration information and generic interface and router configuration information to create virtual access interfaces for individual ISDN B channels.

However, you can monitor and debug the per-user configuration settings on the router or access server that are set from an AAA server. Table 8 indicates some of the commands to use for each attribute.

Per-User Configuration Examples

This section provides two comprehensive examples:

• TACACS+ Freeware Examples

• RADIUS Examples

These examples show router or access server configuration and AV pair configuration on an AAA server.

TACACS+ Freeware Examples

This section provides the TACACS+ freeware versions of the following examples:

• IP Access Lists and Static Routes Using Virtual Profiles over ISDN BRI

• IPX per-User SAP Filters, Using IPXWAN and Virtual Profiles by a Synchronous Interface

IP Access Lists and Static Routes Using Virtual Profiles over ISDN BRI

The following example provides configurations for the TACACS+ freeware daemon, the network access server, and the peer router named tx. On the TACACS+ AAA server, peer router tx has a configuration that includes static routes and IP access lists.

TACACS+ Freeware Daemon Configuration File

key = tac123
user = tx {
global = cleartext welcome
service = ppp protocol = ip {
route#1="10.0.0.0 255.0.0.0"
route#2="11.0.0.0 255.0.0.0"
route#3="12.0.0.0 255.0.0.0"
inacl#1="deny 20.0.0.1"
}
}

Current Network Access Server Configuration

version 11.3
service timestamps debug datetime localtime
service udp-small-servers
service tcp-small-servers
!
hostname sf
!
aaa new-model
aaa authentication ppp default tacacs+
aaa authorization network tacacs+
enable secret 5 $1$koOn$/1QAylov6JFAElxRCrL.o/
enable password lab
!
username tx password 7 15050E0007252621
ip host sf 172.21.114.132
ip domain-name cisco.com
ip name-server 171.69.2.132
ip name-server 198.92.30.32
isdn switch-type basic-5ess
interface Ethernet0
 ip address 172.21.114.132 255.255.255.224
 no ip mroute-cache
 media-type 10BaseT
!
 
interface Virtual-Template1
 ip unnumbered Ethernet0
 no cdp enable
!
!
interface BRI0
 ip unnumbered Ethernet0
 no ip mroute-cache
 encapsulation ppp
 no ip route-cache
 dialer idle-timeout 300
 dialer map ip 20.0.0.1 name tx broadcast 61482
 dialer-group 1
 no fair-queue
 ppp authentication chap
!
!
ip default-gateway 172.21.114.129
no ip classless
ip route 0.0.0.0 0.0.0.0 172.21.114.129
!
virtual-profile virtual-template 1
dialer-list 1 protocol ip permit
tacacs-server host 172.21.114.130
tacacs-server key tac123

Current Peer Configuration for tx

version 11.3
no service pad
!
hostname tx
!
enable secret 5 $1$m1WK$RsjborN1Z.XZuFqsrtSnp/
enable password lab
!
username sf password 7 051C03032243430C
ip host tx 172.21.114.134
ip domain-name cisco.com
ip name-server 171.69.2.132
ip name-server 198.92.30.32
isdn switch-type basic-5ess
!
interface Ethernet0
 ip address 172.21.114.134 255.255.255.224
 no ip route-cache
 shutdown
!
interface BRI0
 ip address 20.0.0.1 255.0.0.0
 encapsulation ppp
 dialer map ip 172.21.114.132 name sf broadcast 61483
 dialer-group 1
 no fair-queue
!
ip default-gateway 172.21.114.129
no ip classless
ip route 172.21.0.0 255.255.0.0 BRI0
dialer-list 1 protocol ip permit
!
line con 0
 exec-timeout 0 0
line vty 0 4
 password lab
 login
end

IPX per-User SAP Filters, Using IPXWAN and Virtual Profiles by a Synchronous Interface

The following example provides configurations for the TACACS+ daemon and the peer router named ny. On the TACACS+ AAA server, user ny has a configuration that includes inbound and outbound SAP filters.

TACACS+ Freeware Daemon Configuration File for User

key = tac123

user = ny {
 global = cleartext welcome
 service = ppp protocol = ipx {
        sap="101 CYBER-01 40.0000.0000.0001 400 10"
        sap="202 CYBER-02 40.0000.0000.0001 401 10"
        sap="303 CYBER-03 40.0000.0000.0001 402 10"
        sap-fltr-out#0="deny 40 101"
        sap-fltr-out#1="deny 40 202"
        sap-fltr-out#2="permit -1"
        sap-fltr-in#0="permit 30 444"
        sap-fltr-in#1="deny -1"

Current Remote Peer (ny) Configuration

version 11.3
!
hostname ny
!
enable password lab
!
username la password 7 140017070F0B272E
ip host NY 172.21.114.131
ip name-server 171.69.2.132
ip name-server 198.92.30.32
ipx routing 0000.0c47.090d
ipx internal-network 30
!
interface Ethernet0
 ip address 172.21.114.131 255.255.255.224
!         
interface Serial1
 no ip address
 encapsulation ppp
 ipx ipxwan 0 unnumbered peer-ny
 clockrate 4000000
!
ipx sap 444 ZEON-4 30.0000.0000.0001 444 10
ipx sap 555 ZEON-5 30.0000.0000.0001 555 10
ipx sap 666 ZEON-6 30.0000.0000.0001 666 10
!         
Current Network Access Server (la) Configuration
version 11.3
service timestamps debug uptime
!
hostname la
!
aaa new-model
aaa authentication ppp default tacacs+
aaa authorization network tacacs+
enable password lab
!
username ny password 7 044C0E0A0C2E414B
ip host LA 172.21.114.133
ip name-server 198.92.30.32
ip name-server 171.69.2.132
ipx routing 0000.0c47.12d3
ipx internal-network 40
!
interface Ethernet0
 ip address 172.21.114.133 255.255.255.224
!         
interface Virtual-Template1
 no ip address
 ipx ipxwan 0 unnumbered nas-la
 no cdp enable
!
interface Serial1
 ip unnumbered Ethernet0
 encapsulation ppp
 ipx ipxwan 0 unnumbered nas-la
 ppp authentication chap
!
ipx sap 333 DEEP9 40.0000.0000.0001 999 10
!
virtual-profile virtual-template 1
tacacs-server host 172.21.114.130
tacacs-server key tac123

RADIUS Examples

This section provides the RADIUS versions of the following examples:

• IP Access Lists and Static Routes Using Virtual Profiles over ISDN BRI

• IPX per-User SAP Filters, Using IPXWAN and Virtual Profiles by a Synchronous Interface

IP Access Lists and Static Routes Using Virtual Profiles over ISDN BRI

The following example shows a remote peer (tx) configured to dial in to a BRI on a Cisco network access server (sf), which requests user configuration information from an AAA server (radiusd):

RADIUS User File

tx      Password = "welcome"
        User-Service-Type = Framed-User,
        Framed-Protocol = PPP,
        cisco-avpair = "ip:route=10.0.0.0 255.0.0.0",
        cisco-avpair = "ip:route=11.0.0.0 255.0.0.0",
        cisco-avpair = "ip:route=12.0.0.0 255.0.0.0",
        cisco-avpair = "ip:inacl#5=deny 20.0.0.1"

Current Network Access Server Configuration

version 11.3
service timestamps debug datetime localtime
service udp-small-servers
service tcp-small-servers
!
hostname sf
!
aaa new-model
aaa authentication ppp default radius
aaa authorization network radius
enable secret 5 $1$koOn$/1QAylov6JFAElxRCrL.o/
enable password lab
!
username tx password 7 15050E0007252621
ip host sf 172.21.114.132
ip domain-name cisco.com
ip name-server 171.69.2.132
ip name-server 198.92.30.32
isdn switch-type basic-5ess
interface Ethernet0
 ip address 172.21.114.132 255.255.255.224
 no ip mroute-cache
 media-type 10BaseT
!
!
interface Virtual-Template1
 ip unnumbered Ethernet0
 no cdp enable
!
!
interface BRI0
 ip unnumbered Ethernet0
 no ip mroute-cache
 encapsulation ppp
 no ip route-cache
 dialer idle-timeout 300
 dialer map ip 20.0.0.1 name tx broadcast 61482
 dialer-group 1
 no fair-queue
 ppp authentication chap
!
ip default-gateway 172.21.114.129
no ip classless
ip route 0.0.0.0 0.0.0.0 172.21.114.129
!
virtual-profile vtemplate 1
dialer-list 1 protocol ip permit
radius-server host 172.21.114.130
radius-server key rad123

Current Peer Configuration for tx

version 11.3
no service pad
!
hostname tx
!
enable secret 5 $1$m1WK$RsjborN1Z.XZuFqsrtSnp/
enable password lab
!
username sf password 7 051C03032243430C
ip host tx 172.21.114.134
ip domain-name cisco.com
ip name-server 171.69.2.132
ip name-server 198.92.30.32
isdn switch-type basic-5ess
!
interface Ethernet0
 ip address 172.21.114.134 255.255.255.224
 no ip route-cache
 shutdown
!
interface BRI0
 ip address 20.0.0.1 255.0.0.0
 encapsulation ppp
 dialer map ip 172.21.114.132 name sf broadcast 61483
 dialer-group 1
 no fair-queue
!
ip default-gateway 172.21.114.129
no ip classless
ip route 172.21.0.0 255.255.0.0 BRI0
dialer-list 1 protocol ip permit
!
line con 0
 exec-timeout 0 0
line vty 0 4
 password lab
 login
!
end

Output of ping Command from tx

tx# ping 172.21.114.132
 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.21.114.132, timeout is 2 seconds:
U.U.U
Success rate is 0 percent (0/5)
 
(fails due to access list deny)

RADIUS Debug Output

radrecv: Request from host ac157284 code=1, id=46, length=67
    Client-Id = 172.21.114.132
    Client-Port-Id = 1112670208
    User-Name = "tx"
    CHAP-Password = "\037\317\213\326*\236)#+\266\243\255x\331\370v\334"
    User-Service-Type = Framed-User
    Framed-Protocol = PPP
Sending Ack of id 46 to ac157284 (172.21.114.132)
    User-Service-Type = Framed-User
    Framed-Protocol = PPP
    [Vendor 9] cisco-avpair = "ip:route=10.0.0.0 255.0.0.0"
    [Vendor 9] cisco-avpair = "ip:route=11.0.0.0 255.0.0.0"
    [Vendor 9] cisco-avpair = "ip:route=12.0.0.0 255.0.0.0"
    [Vendor 9] cisco-avpair = "ip:inacl#5=deny 20.0.0.1"

Network Access Server (sf) show and debug Commands Output

sf# show debug
 
General OS:
  AAA Authorization debugging is on
PPP:
  PPP authentication debugging is on
  Multilink activity debugging is on
ISDN:
  ISDN events debugging is on
Dial on demand:
  Dial on demand events debugging is on
VTEMPLATE:
  Virtual Template debugging is on
 
pr  4 08:30:09: ISDN BR0: received HOST_INCOMING_CALL
        Bearer Capability i = 0x080010
*Apr  4 08:30:09:       -------------------
        Channel ID i = 0x0101
*Apr  4 08:30:09:         IE out of order or end of `private' IEs --
        Bearer Capability i = 0x8890
*Apr  4 08:30:09:         Channel ID i = 0x89
*Apr  4 08:30:09:         Called Party Number i = 0xC1, `61483'
*Apr  4 08:30:09: ISDN BR0: Event: Received a call from <unknown> on B1 at 64 Kb/s
*Apr  4 08:30:09: ISDN BR0: Event: Accepting the call
%LINK-3-UPDOWN: Interface BRI0:1, changed state to up
*Apr  4 08:30:09: ISDN BR0: received HOST_CONNECT
        Channel ID i = 0x0101
*Apr  4 08:30:09:       -------------------
        Channel ID i = 0x89
*Apr  4 08:30:09: ISDN BR0: Event: Connected to <unknown> on B1 at 64 Kb/s
*Apr  4 08:30:09: PPP BRI0:1: Send CHAP challenge id=30 to remote
*Apr  4 08:30:10: PPP BRI0:1: CHAP response received from tx
*Apr  4 08:30:10: PPP BRI0:1: CHAP response id=30 received from tx
*Apr  4 08:30:10: AAA/AUTHOR/LCP: authorize LCP
*Apr  4 08:30:10: AAA/AUTHOR/LCP: BRI0:1: (0): user='tx'
*Apr  4 08:30:10: AAA/AUTHOR/LCP: BRI0:1: (0): send AV service=ppp
*Apr  4 08:30:10: AAA/AUTHOR/LCP: BRI0:1: (0): send AV protocol=lcp
*Apr  4 08:30:10: AAA/AUTHOR/LCP: BRI0:1: (2084553184): Method=RADIUS
*Apr  4 08:30:10: AAA/AUTHOR (2084553184): Post authorization status = PASS_ADD
*Apr  4 08:30:10: PPP BRI0:1: Send CHAP success id=30 to remote
*Apr  4 08:30:10: PPP BRI0:1: remote passed CHAP authentication.
*Apr  4 08:30:10: VTEMPLATE Reuse vaccess1, New Recycle queue size:0
 
*Apr  4 08:30:10: VTEMPLATE set default vaccess1 with no ip address  
 
*Apr  4 08:30:10: Virtual-Access1 VTEMPLATE hardware address 0000.0c46.154a
*Apr  4 08:30:10: VTEMPLATE vaccess1 has a new cloneblk vtemplate, now it has vtemplate
*Apr  4 08:30:10: VTEMPLATE undo default settings vaccess1
 
*Apr  4 08:30:10: VTEMPLATE ************* CLONE VACCESS1 ******************Apr  4 08:30:10: VTEMPLATE Clone from vtemplate1 to vaccess1
interface Virtual-Access1
no ip address
encap ppp
ip unnumbered ethernet 0
end
 
%LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Apr  4 08:30:10: AAA/AUTHOR/LCP: authorize LCP
*Apr  4 08:30:10: AAA/AUTHOR/LCP: Virtual-Access1: (0): user='tx'
*Apr  4 08:30:10: AAA/AUTHOR/LCP: Virtual-Access1: (0): send AV service=ppp
*Apr  4 08:30:10: AAA/AUTHOR/LCP: Virtual-Access1: (0): send AV protocol=lcp
*Apr  4 08:30:10: AAA/AUTHOR/LCP: Virtual-Access1: (1338953760): Method=RADIUS
*Apr  4 08:30:10: AAA/AUTHOR (1338953760): Post authorization status = PASS_ADD
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: (0): can we start IPCP?
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: (0): user='tx'
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: (0): send AV service=ppp
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: (0): send AV protocol=ip
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: (1716082074): Method=RADIUS
*Apr  4 08:30:10: AAA/AUTHOR (1716082074): Post authorization status = PASS_ADD
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: we can start IPCP (0x8021)
*Apr  4 08:30:10: MLP Bad link Virtual-Access1
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: (0): can we start UNKNOWN?
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: (0): user='tx'
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: (0): send AV service=ppp
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: (0): send AV protocol=unknown
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: (2526612868): Method=RADIUS
*Apr  4 08:30:10: AAA/AUTHOR (2526612868): Post authorization status = PASS_ADD
*Apr  4 08:30:10: AAA/AUTHOR/FSM: Virtual-Access1: we can start UNKNOWN (0x8207)
*Apr  4 08:30:10: MLP Bad link Virtual-Access1
*Apr  4 08:30:10: BRI0:1: Vaccess started from dialer_remote_name
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: (0): can we start IPCP?
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: (0): user='tx'
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: (0): send AV service=ppp
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: (0): send AV protocol=ip
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: (3920403585): Method=RADIUS
*Apr  4 08:30:10: AAA/AUTHOR (3920403585): Post authorization status = PASS_ADD
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: we can start IPCP (0x8021)
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: (0): can we start UNKNOWN?
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: (0): user='tx'
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: (0): send AV service=ppp
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: (0): send AV protocol=unknown
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: (3439943223): Method=RADIUS
*Apr  4 08:30:10: AAA/AUTHOR (3439943223): Post authorization status = PASS_ADD
*Apr  4 08:30:10: AAA/AUTHOR/FSM: BRI0:1: we can start UNKNOWN (0x8207)
%LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, changed state to up
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: start: her address 20.0.0.1, we want 0.0.0.0
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: (0): user='tx'
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: (0): send AV servi*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: (0): send AV service=ppp
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: (0): send AV protocol=ip
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: (0): send AV addr*20.0.0.1
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: (3215797579): Method=RADIUS
*Apr  4 08:30:13: AAA/AUTHOR (3215797579): Post authorization status = PASS_ADD
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: Processing AV service=ppp
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: Processing AV protocol=ip
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: Processing AV addr*20.0.0.1
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: Processing AV route=10.0.0.0 255.0.0.0
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: Processing AV route=11.0.0.0 255.0.0.0
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: Processing AV route=12.0.0.0 255.0.0.0
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: Processing AV inacl#5=deny 20.0.0.1
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: authorization succeeded
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: done: her address 20.0.0.1, we want 20.0.0.1
*Apr  4 08:30:13: AAA/AUTHOR/IPCP: Virtual-Access1: authorization succeeded
*Apr  4 08:30:13: AAA/AUTHOR: Virtual-Access1: parse_cmd `ip route 10.0.0.0 255.0.0.0 20.0.0.1' ok (0)
*Apr  4 08:30:13: AAA/AUTHOR: Virtual-Access1: enqueue peruser IP txt=no ip route 10.0.0.0 255.0.0.0 20.0.0.1
*Apr  4 08:30:13: AAA/AUTHOR: Virtual-Access1: parse_cmd `ip route 11.0.0.0 255.0.0.0 20.0.0.1' ok (0)
*Apr  4 08:30:13: AAA/AUTHOR: Virtual-Access1: enqueue peruser IP txt=no ip route 11.0.0.0 255.0.0.0 20.0.0.1
*Apr  4 08:30:13: AAA/AUTHOR: Virtual-Access1: parse_cmd `ip route 12.0.0.0 255.0.0.0 20.0.0.1' ok (0)
*Apr  4 08:30:13: AAA/AUTHOR: Virtual-Access1: enqueue peruser IP txt=no ip route 12.0.0.0 255.0.0.0 20.0.0.1
*Apr  4 08:30:13: AAA/AUTHOR: parse `ip access-list standard Virtual-Access1#0' ok (0)
*Apr  4 08:30:13: AAA/AUTHOR: parse `deny 20.0.0.1' ok (0)
*Apr  4 08:30:13: AAA/AUTHOR: Virtual-Access1: enqueue peruser IP txt=no ip access-list standard Virtual-Access1#0
*Apr  4 08:30:13: VTEMPLATE vaccess1 has a new cloneblk AAA, now it has vtemplate/AAA
*Apr  4 08:30:13: VTEMPLATE ************* CLONE VACCESS1 *****************
 
*Apr  4 08:30:13: VTEMPLATE Clone from AAA to vaccess1
interface Virtual-Access1
ip access-group Virtual-Access1#0 in
end
 
*Apr  4 08:30:13: AAA/AUTHOR: Virtual-Access1: vaccess parse `interface Virtual-Access1
ip access-group Virtual-Access1#0 in
` ok (0)
*Apr  4 08:30:13: AAA/AUTHOR/FSM: Check for unauthorized mandatory AV's
*Apr  4 08:30:13: AAA/AUTHOR/FSM: Processing AV service=ppp
*Apr  4 08:30:13: AAA/AUTHOR/FSM: Processing AV protocol=unknown
*Apr  4 08:30:13: AAA/AUTHOR/FSM: succeeded
%ISDN-6-CONNECT: Interface BRI0:1 is now connected to  tx
sf#
 
sf# show ip access-list
 
Standard IP access list Virtual-Access1#0 (per-user)
    deny   20.0.0.1
 
sf# show ip route
 
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
       U - per-user static route, o - ODR
 
Gateway of last resort is 172.21.114.129 to network 0.0.0.0
 
U    10.0.0.0/8 [1/0] via 20.0.0.1
U    11.0.0.0/8 [1/0] via 20.0.0.1
U    12.0.0.0/8 [1/0] via 20.0.0.1
     20.0.0.0/8 is subnetted, 1 subnets
C       20.0.0.1 is directly connected, Virtual-Access1
     172.21.0.0/16 is subnetted, 1 subnets
C       172.21.114.128 is directly connected, Ethernet0
S*   0.0.0.0/0 [1/0] via 172.21.114.129
 
 
sf# show interfaces virtual-access 1
 
Virtual-Access1 is up, line protocol is up 
  Hardware is Virtual Access interface
  Interface is unnumbered.  Using address of Ethernet0 (172.21.114.132)
  MTU 1500 bytes, BW 64 Kbit, DLY 100000 usec, rely 255/255, load 1/255
  Encapsulation PPP, loopback not set, keepalive set (10 sec)
  DTR is pulsed for 5 seconds on reset
  LCP Open, multilink Closed
  Open: IPCP, CDP
  Last input 5d04h, output never, output hang never
  Last clearing of "show interface" counters 00:06:42
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     76 packets input, 3658 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     141 packets output, 2909 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
 
sf# show ip interface virtual-access 1
 
Virtual-Access1 is up, line protocol is up
  Interface is unnumbered.  Using address of Ethernet0 (172.21.114.132)
  Broadcast address is 255.255.255.255
  Peer address is 20.0.0.1
  MTU is 1500 bytes
  Helper address is not set
  Directed broadcast forwarding is enabled
  Outgoing access list is not set
  Inbound  access list is Virtual-Access1#0
  Proxy ARP is enabled
  Security level is default
  Split horizon is enabled
  ICMP redirects are always sent
  ICMP unreachables are always sent
  ICMP mask replies are never sent
  IP fast switching is disabled
 
 
sf# debug ip packet 
 
IP packet debugging is on
sf#
*Apr  4 08:30:42: IP: s=172.21.114.129 (Ethernet0), d=255.255.255.255, len 186, rcvd 2
*Apr  4 08:30:42: IP: s=20.0.0.1 (Virtual-Access1), d=172.21.114.132, len 104, a*Apr  4 08:30:42: IP: s=20.0.0.1 (Virtual-Access1), d=172.21.114.132, len 104, access denied
*Apr  4 08:30:42: IP: s=172.21.114.132 (local), d=20.0.0.1 (Virtual-Access1), len 4, sending
*Apr  4 08:30:42: IP: s=20.0.0.1 (Virtual-Access1), d=172.21.114.132, len 104, access denied
*Apr  4 08:30:44: IP: s=20.0.0.1 (Virtual-Access1), d=172.21.114.132, len 104, access denied
*Apr  4 08:30:44: IP: s=172.21.114.132 (local), d=20.0.0.1 (Virtual-Access1), len 16, sending
*Apr  4 08:30:44: IP: s=20.0.0.1 (Virtual-Access1), d=172.21.114.132, len 104, access denied

IPX per-User SAP Filters, Using IPXWAN and Virtual Profiles by a Synchronous Interface

The following example shows a remote peer (ny) configured to dial in to a synchronous interface on a Cisco network access server (la), which requests user configuration information from an AAA server (radiusd):

RADIUS User File

ny      Password = "welcome"
        User-Service-Type = Framed-User,
        Framed-Protocol = PPP,
        cisco-avpair = "ipx:sap=101 CYBER-01 40.0000.0000.0001 400 10",
        cisco-avpair = "ipx:sap=202 CYBER-02 40.0000.0000.0001 401 10",
        cisco-avpair = "ipx:sap=303 CYBER-03 40.0000.0000.0001 402 10",
        cisco-avpair = "ipx:sap-fltr-out#20=deny 40 101",
        cisco-avpair = "ipx:sap-fltr-out#21=deny 40 202",
        cisco-avpair = "ipx:sap-fltr-out#22=permit -1",
        cisco-avpair = "ipx:sap-fltr-in#23=permit 30 444",
        cisco-avpair = "ipx:sap-fltr-in#23=deny -1"

Current Remote Peer (ny) Configuration

version 11.3
!
hostname ny
!
enable password lab
!
username la password 7 140017070F0B272E
ip host NY 172.21.114.131
ip name-server 171.69.2.132
ip name-server 198.92.30.32
ipx routing 0000.0c47.090d
ipx internal-network 30
!
interface Ethernet0
 ip address 172.21.114.131 255.255.255.224
!
interface Serial1
 no ip address
 encapsulation ppp
 ipx ipxwan 0 unnumbered peer-ny
 clockrate 4000000
!
ipx sap 444 ZEON-4 30.0000.0000.0001 444 10
ipx sap 555 ZEON-5 30.0000.0000.0001 555 10
ipx sap 666 ZEON-6 30.0000.0000.0001 666 10
!
...
version 12.1
service timestamps debug uptime
!
hostname la
!
aaa new-model
aaa authentication ppp default radius
aaa authorization network radius
enable password lab
!
username ny password 7 044C0E0A0C2E414B
ip host LA 172.21.114.133
ip name-server 198.92.30.32
ip name-server 171.69.2.132
ipx routing 0000.0c47.12d3
ipx internal-network 40
!
interface Ethernet0
 ip address 172.21.114.133 255.255.255.224
!
interface Virtual-Template1
 no ip address
 ipx ipxwan 0 unnumbered nas-la
 no cdp enable
!
interface Serial1
 ip unnumbered Ethernet0
 encapsulation ppp
 ipx ipxwan 0 unnumbered nas-la
 ppp authentication chap
!
ipx sap 333 DEEP9 40.0000.0000.0001 999 10
! 
virtual-profile vtemplate 1
radius-server host 172.21.114.130
radius-server key rad123

RADIUS debug Output

radrecv: Request from host ac157285 code=1, id=23, length=67
    Client-Id = 172.21.114.133
    Client-Port-Id = 1399128065
    User-Name = "ny"
    CHAP-Password = "%"(\012I$\262\352\031\276\024\302\277\225\347z\274"
    User-Service-Type = Framed-User
    Framed-Protocol = PPP
Sending Ack of id 23 to ac157285 (172.21.114.133)
    User-Service-Type = Framed-User
    Framed-Protocol = PPP
    [Vendor 9] cisco-avpair = "ipx:sap=101 CYBER-01 40.0000.0000.0001 400 10"
    [Vendor 9] cisco-avpair = "ipx:sap=202 CYBER-02 40.0000.0000.0001 401 10"
    [Vendor 9] cisco-avpair = "ipx:sap=303 CYBER-03 40.0000.0000.0001 402 10"
    [Vendor 9] cisco-avpair = "ipx:sap-fltr-out#20=deny 40 101"
    [Vendor 9] cisco-avpair = "ipx:sap-fltr-out#21=deny 40 202"
    [Vendor 9] cisco-avpair = "ipx:sap-fltr-out#22=permit -1"
    [Vendor 9] cisco-avpair = "ipx:sap-fltr-in#23=permit 30 444"
    [Vendor 9] cisco-avpair = "ipx:sap-fltr-in#23=deny -1"

Network Access Server show Command Output

la# show ipx servers 
 
Codes: S - Static, P - Periodic, E - EIGRP, N - NLSP, H - Holddown, + = detail
5 Total IPX Servers
 
Table ordering is based on routing and server info
 
   Type Name                       Net     Address    Port     Route Hops Itf
s   101 CYBER-01                    40.0000.0000.0001:0400      conn  10  Int
s   202 CYBER-02                    40.0000.0000.0001:0401      conn  10  Int
s   303 CYBER-03                    40.0000.0000.0001:0402      conn  10  Int
S   333 DEEP9                       40.0000.0000.0001:0999      conn  10  Int
P   444 ZEON-4                      30.0000.0000.0001:0444      7/01  11  Vi1
 
 
ny# show ipx servers 
 
Codes: S - Static, P - Periodic, E - EIGRP, N - NLSP, H - Holddown, + = detail
5 Total IPX Servers
 
Table ordering is based on routing and server info
 
   Type Name                       Net     Address    Port     Route Hops Itf
P   303 CYBER-03                    40.0000.0000.0001:0402      7/01  11  Se1
P   333 DEEP9                       40.0000.0000.0001:0999      7/01  11  Se1
S   444 ZEON-4                      30.0000.0000.0001:0444      conn  10  Int
S   555 ZEON-5                      30.0000.0000.0001:0555      conn  10  Int
S   666 ZEON-6                      30.0000.0000.0001:0666      conn  10  Int
 
la# show ipx access-list
 
IPX sap access list Virtual-Access1#2
    permit 30 444
    deny FFFFFFFF
IPX sap access list Virtual-Access1#3
    deny 40 101
    deny 40 202
    permit FFFFFFFF

Posted: Tue Jul 18 15:09:59 PDT 2000
Copyright 1989-2000©Cisco Systems Inc.