Cisco VPN is Cisco Virtual Private Networking (more information needed).
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This pattern has been reported to work with Cisco VPN 4.0.3-Win32. However, according to one user:
"This pattern absolutely doesn't match cisco vpn traffic. Tested with Cisco Systems VPN Client Version 4.0.4 (Rel) and PIX firewall in two modes: (1) Transparent tunneling (over UDP 4500 port) (2) Tunnel mode (ESP)."