
7-7
Cisco PIX Firewall and VPN Configuration Guide
78-15033-01
Chapter 7 Site-to-Site VPN Configuration Examples
Using PIX Firewall with a VeriSign CA
timeout xlate 3:00:00 conn 1:00:00 half-closed 0:10:00 udp 0:02:00
timeout rpc 0:10:00 h323 0:05:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server RADIUS protocol radius
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
sysopt connection permit-ipsec
crypto ipsec transform-set strong esp-3des esp-sha-hmac
crypto map newyork 10 ipsec-isakmp
crypto map newyork 10 match address 80
crypto map newyork 10 set peer 209.165.201.8
crypto map newyork 10 set transform-set strong
crypto map newyork interface outside
isakmp enable outside
isakmp key cisco1234 address 209.165.201.8 netmask 255.255.255.255
isakmp policy 8 authentication pre-share
isakmp policy 8 encryption 3des
telnet timeout 5
terminal width 80
Note In Example 7-2, the following statements are not used when enabling NAT for all traffic:
nat 0 access-list 80
access-list 80 permit ip 10.0.0.0 255.0.0.0 192.168.12.0 255.255.255.00
Using PIX Firewall with a VeriSign CA
This section provides configuration examples showing how to configure interoperability between two
PIX
Firewall units (PIX Firewall 1 and 2) for site-to-site VPN using the VeriSign CA server for device
enrollment, certificate requests, and digital certificates for the IKE authentication. This section includes
the following topics:
• Scenario Description, page 7-7
• Configuring PIX Firewall 1 with a VeriSign CA, page 7-8
• Configuring PIX Firewall 2 with a VeriSign CA, page 7-11
Scenario Description
The two VPN peers in the configuration examples are shown to be configured to enroll with VeriSign at
the IP address of 209.165.202.130 and to obtain their CA certificates from this CA server. VeriSign is a
public CA that issues its CA-signed certificates over the Internet. Once each peer obtains its CA-signed
certificate, tunnels can be established between the two VPN peers using digital certificates as the
authentication method used during IKE authentication. The peers dynamically authenticate each other
using the digital certificates.
Note VeriSign’s actual CA server address differs. The example CA server address is to be used for example
purposes only.
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