On Tuesday 12 September 2006 14:29, wlists wrote:

> we've isolated that our firewall and routing is not the problem. VPN

It's a firewall problem alright, but not on your side nor on the client. It's 
the telco's fault. Problem is you're basically behind a NAT when using a GPRS 
connection from the local telcos. (At least with the two big telcos. 2 years 
ago, I tried GPRS from the 2 telcos. I obtained a 192.* address from both. 
But that was 2 years ago. I haven't tried GPRS service from the third 
player.)

Anyway, AFAIK, L2TP over IPSec (or just IPSec won't work if the client is 
behind a NAT unless the router/firewall provides VPN tunelling. 

You might want to explore other VPN solutions that will work behind a NAT if 
you really need to work via GPRS. Checkout OpenVPN. http://openvpn.net/

-- 
Gideon N. Guillen
[EMAIL PROTECTED]
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