This sample configuration initially blocks traffic from external hosts to all devices on the internal network until browser authentication is performed using authentication proxy. After authorization, the access list passed down from the server (permit tcp|ip|icmp any any) adds dynamic entries to access list 116 that temporarily allow access from the external PC to the internal network.
Note: The AAA configuration used in this document is also applicable to Catalyst switches that run Cisco IOS® software.
There are no specific requirements for this document.
The information in this document is based on these software and hardware versions:
Cisco IOS Software Release 12.2.23
Cisco 3640 router
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Refer to the Cisco Technical Tips Conventions for more information on document conventions.
In this section, you are presented with the information to configure the features described in this document.
This document uses this network setup:
This document uses this configuration:
Cisco 3640 Router
|Cisco 3640 Router|
Current configuration: ! version 12.2 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname sec-3640 ! aaa new-model aaa group server tacacs+ RTP server 126.96.36.199 ! aaa authentication login default group RTP none aaa authorization exec default group RTP none aaa authorization auth-proxy default group RTP enable secret 5 $1$pqRI$3TDNFT9FdYT8Sd/q3S0VU1 enable password ww ! ip subnet-zero ! ip inspect name myfw cuseeme timeout 3600 ip inspect name myfw ftp timeout 3600 ip inspect name myfw http timeout 3600 ip inspect name myfw rcmd timeout 3600 ip inspect name myfw realaudio timeout 3600 ip inspect name myfw smtp timeout 3600 ip inspect name myfw sqlnet timeout 3600 ip inspect name myfw streamworks timeout 3600 ip inspect name myfw tftp timeout 30 ip inspect name myfw udp timeout 15 ip inspect name myfw tcp timeout 3600 ip inspect name myfw vdolive ip auth-proxy auth-proxy-banner ip auth-proxy auth-cache-time 10 ip auth-proxy name list_a http ip audit notify log ip audit po max-events 100 ! interface Ethernet0/0 ip address 188.8.131.52 255.255.255.0 ip access-group 116 in ip nat outside ip auth-proxy list_a no ip route-cache no ip mroute-cache speed auto half-duplex no mop enabled ! interface Ethernet1/0 ip address 10.14.14.14 255.255.255.0 ip nat inside ip inspect myfw in speed auto half-duplex ! !--- Interfaces deleted. ! nat pool outsidepool 184.108.40.206 220.127.116.11 netmask 255.255.255.0 ip nat inside source list 1 pool outsidepool ip nat inside source static 10.14.14.15 18.104.22.168 ip classless ip route 0.0.0.0 0.0.0.0 22.214.171.124 ip route 126.96.36.199 255.255.255.0 188.8.131.52 ip route 184.108.40.206 255.255.255.0 220.127.116.11 no ip http server ! access-list 116 permit tcp host 18.104.22.168 host 22.214.171.124 eq www access-list 116 deny tcp host 126.96.36.199 any access-list 116 deny udp host 188.8.131.52 any access-list 116 deny icmp host 184.108.40.206 any access-list 116 permit icmp any any access-list 116 permit tcp any any access-list 116 permit udp any any dialer-list 1 protocol ip permit dialer-list 1 protocol ipx permit ! tacacs-server host 220.127.116.11 tacacs-server key cisco ! line con 0 transport input none line aux 0 line vty 0 4 password ww ! end
Refer to Important Information on Debug Commands before you issue debug commands.
Refer to Troubleshooting Authentication Proxy for command and troubleshooting information.
There is currently no specific troubleshooting information available for this configuration.
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Refer to Cisco Technical Tips Conventions for information on conventions used in this document.