PF Routing to VPN Device

Mike Sweetser - Adhost mikesw at adhost.com
Wed Jun 17 19:46:48 UTC 2009


Hello,

We have a network with a VPN device sitting beside a PF server, both
connected to an internal network.  

PF Server: 10.1.4.1
VPN Device: 10.1.4.200

The VPNs are set up for 10.1.1.0/24 and 10.1.2.0/24, so any traffic to
these networks should be routed to 10.1.4.200.  We've set up routes on
the PF server as such.

We've set up the following rules: 

block in log
pass in on $int_if route-to 10.1.4.200 from 10.1.4.0/24 to { 10.1.1.0/24
10.1.2.0/24)

However, the block in log is catching the return traffic.  From pflog
when somebody on the VPN (10.1.2.105) tries to connect to 10.1.4.25 on
port 80:

000000 rule 28/0(match): block in on bge1: 10.1.4.25.80 >
10.1.2.105.3558: [|tcp]

If we remove the block in log, the traffic works.

What are we missing?

Thanks,
Mike


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