View Single Post
  #1   (View Single Post)  
Old 8th February 2017
damageG damageG is offline
Port Guard
 
Join Date: Feb 2017
Posts: 13
Default pf Dropped Packets

I have a new firewall that is almost exactly the one show here

https://www.openbsd.org/faq/pf/example1.html

I don't think it should matter but I have a couple of VLAN on em1 so my internal interfaces look like:

int_if="{ em1 vlan101 vlan102 vlan103 }"

As far as I can tell, everything is working. I can see dropped packets coming in from the internet and get out to everything so far.

My LAN is on vlan102 and I'm getting some dropped packets coming from the LAN to the internet on the HTTPS port for services like dropbox. Dropbox seems to be working so I don't think it's a problem but I don't understand why these packets are being dropped when others are not.

Here is an example:
rule 4/(match) block in on vlan102: 10.x.x.x.54738 > 52.207.41.48.443: F 0:0(0) ack 1 win 254 (DF)

The rule

pass in on $int_if inet

allows most everything in on the LAN but not these.

Thanks in advance for any thoughts.
Reply With Quote