vpn connection with gprs

Unanswered Question
Dec 13th, 2007

hi

i have a problem with the vpn sessions,the users connect to internet with GPRS cards (wireless link) they are using the cisco vpn client 4.6.00 the problem is when in the configuration of the client check the option ipsec over tcp (see image) then the connection

drops every 10 or 15 minutes the pc have windows xp and are connecting to a cvpn 3005.

if i connect to internet with adsl, dial up, etc. there is no problem

but if i uncheck the ipsec over tcp and check ipsec over udp the connection works fine

i post the images with the log of the client

any ideas?

thanks

I have this problem too.
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husycisco Fri, 12/14/2007 - 12:16

Hi Eduardo

Add the following command in VPN endpoint

crypto isakmp nat-traversal 20

Upgrade the client version to 5.0

If it doesnt work, that means GPRS card modem does not support transparent tunneling

Regards

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