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pptp nat and fedora core3

DISCUSSION Peter Marshall 2 participants 2 messages Feb 17, 2005

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I am building a firewall that has to support the natting of pptp ... I was hoping fedora core 3 would have the necessary conntrack modules (like gre and pptp) built into the kernel ... but it does not ...

I would REALLY prefer to not have to re-compile the kernel ... Is there a "laodmodule" line I can use to add the stuff at runtime ? What modules do I need ?

I am going to have windows xp boxes use the built in pptp client to connect out of my lan to an external site ....

Is there a difference between what you would do with rh9 and fed core3

Thanks for the advice,
Peter

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Quoted 3 lines · Peter Marshall

I am building a firewall that has to support the natting of pptp ... I was hoping fedora core 3 would have the necessary conntrack modules (like gre and pptp) built into the kernel ... but it does not ...

nope--sure doesn't.

Quoted 1 line

I would REALLY prefer to not have to re-compile the kernel ...

well...ya gotta...

Quoted 2 lines

Is there
a "laodmodule" line I can use to add the stuff at runtime ?

no.

Quoted 2 lines

What
modules do I need ?

ip_conntrack_pptp
ip_conntrack_proto_gre
ip_nat_pptp
ip_nat_proto_gre

Quoted 4 lines

I am going to have windows xp boxes use the built in pptp client to connect out of my lan to an external site ....

Is there a difference between what you would do with rh9 and fed core3

sort of. redhat 9 is a 2.4-based distro, while fc3 is a 2.6-based distro. you can search the archives on this, but my observation is that there are still issues with the 2.6 of the PPTP conntrack/nat code.

if you *must* use 2.6, you almost certainly will want to grab the latest POM from SVN. note: "must" means the machine you are using as the firewall will not run with a 2.4 kernel.

if the machine is 2.4-friendly, then stick with what works. since rh9 is eol--if this is a new install, and you like the rh-style of distro, might i suggest CentOS as base for your firewall? take it from a guy that runs it--FC is a toy, and a nightmare to maintain if you're used stable code and patch updates that don't break things...

-j

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