Originally Posted by
boberonicus
Is it correct to say that you're making two NAT traversals when it doesn't work and one NAT traversal when it does work? That could be related. Anyway, I think troubleshooting this problem could be interesting, but I don't really understand the topology. Could you tell us what equipment type and manufacturer you're using? Please correct this diagram:
A-B-C-D-E
A: Cisco VPN client
B: Netgear wireless bridge
C: Linksys wireless router
D: 2Wire DSL Modem
E: SBC
A = Cisco VPN Client
B = Airlink Wireless Access point, configured as a client
C = Motorola Wireles Surfboard Gateway (combination cable modem, firewall router & wireless router)
D = Comcast Cable
I also have a second wireless network (the Motorola runs WPA2, I need a WEP one for an old TIVO) which is a Linksys router connected wired via a Netgear switch wired to the Motorola Gateway. I also tried using this router as an experiement, and it behaved the same as directly going through the Motorola.
If I use the wired network port of either router, the VPN works.
The whole thing is a puzzle to me. I've tried ever router setting I could think of. I've even disabled the firewall as a test. But, since the wired works through the firewall, that made little sense.