RE: NAT and VPN

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From: netfilter-admin@xxxxxxxxxxxxxxxxxxx [mailto:netfilter-admin@xxxxxxxxxxxxxxxxxxx] On Behalf Of Derek Storvik
Sent: Thursday, June 03, 2004 11:53 AM
To: netfilter@xxxxxxxxxxxxxxxxxxx
Subject: NAT and VPN

 

I’m having trouble with NAT and VPN  

 

I have a linux server running Fedora core 1   that is a NAT/FIREWALL/VLAN/DHCP server for a large client network.

 

Internet

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Linux

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Large network with many vlans and 1000 nodes or so.

 

 

 The internal network is natted to the 10.0.0.0 network and my clients can not VPN out to the internet.   Specifically they get back an error 619

What has to be done to allow VPN to traverse through the firewall and NAT?   at the moment the firewall rules are wide open to make sure that isn’t my issue.

 

 

 

 

 

What VPN?  Cisco IPSec client?  other IPSec clients?  PoPToP?.....

 

yes it matters

 

<snip>

 

 

It is PPTP.  A windows client to a VPN server on a university campus.

 

Derek

 


From: Aldo Lagana [mailto:ALagana@xxxxxxx]
Sent: Thursday, June 03, 2004 2:43 PM
To: Derek Storvik
Subject: RE: NAT and VPN

 

then all you need to do is to either:

 

# modprobe ip_nat_pptp

 

OR

 

include NAT PPTP in your kernel configuration and recompile the kernel

 

works great for me!

 

 

Ok here is the stupid question. I do that and I get the following.  What all do I need to do? Path things? Recompile?

 

[root@Furies root]# modprobe ip_nat_pptp

modprobe: Can't locate module ip_nat_pptp

 

Thanks for the help

   Derek

 

 


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