Messages in this thread | | | Subject | Re: [OT] Connection tracking for IPSec | From | Felipe Alfaro Solana <> | Date | Wed, 20 Aug 2003 17:18:41 +0200 |
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On Wed, 2003-08-20 at 16:53, Christophe Saout wrote: > > No... What I'm saying is that normal IP traffic is processed by the > > firewall. However, if the incoming traffic is protected with IPSec, > > since I opened up protocols 50 and 51, the IPSec traffic is admitted > > without passing any remaining firewall filters. The machine in question > > is an end host (not a router). > > Yes, you're right. I just checked. Only the encrypted traffic passes the > netfilter rules, never the unencrypted data. So if you open the > protocols 50 and 51, the encrypted data can pass, gets > encrypted/decrypted and that data can always pass unchecked. > > These packets should get reinjected into the netfilter mechanism after > decryption and should pass the rules before getting encrypted.
Exactly! Now, I dont know how to reinject the IPSec-decrypted packets back to the netfilter engine. Anyone?
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