ATT DSL users cant vpn

Unanswered Question
Mar 4th, 2008
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Hi. I have an ASA setup that works for 90% of the people VPN'ing in. However AT&T dsl users cant seem to get in. Has anybody else seen this? Should I be looking at something in particular?



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husycisco Wed, 03/05/2008 - 12:33
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Hi Bob

Make sure the following exists in your ASA config

crypto isakmp nat-traversal 20

If it exists, make sure AT&T users' internet modems do support VPN passthrough and are enabled. Also Enabled Firewall option in AT&T internet modem may be causing this.

Also upgrading VPN client to 5.x solves some of these kinds of issues



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