Hello,

a quick glance and it seems you aren't allowing vether traffic to pass.

--
Regards,
Ville

On Jun 26, 2017 8:19 PM, "Steve Williams" <st...@williamsitconsulting.com>
wrote:

> Hi,
>
> New install of OpenBSD 6.1 on apu2.  Love the little box.
>
> I have em0 as the connection to the Internet and I bridged em1 and em2
> together on 192.168.123.0.
>
> I've been using OpenBSD since the 2.7 days, but have never run NAT so this
> is my first foray into that world.  I have followed the FAQ on "building a
> router" almost vebatim.  It's working fine, but I am seeing some packets
> blocked with no effect on browsing behind the OpenBSD box.
>
> My ruleset:
>
> # pfctl -sr
> match in all scrub (no-df random-id)
> match out on egress inet from ! (egress:network) to any nat-to (egress:0)
> round-robin
> block drop log quick from <blocklist> to any
> block drop log quick from <bad_hosts> to any
> block drop log all
> pass out quick inet all flags S/SA
> pass in on vether0 inet all flags S/SA
> pass in on em1 inet all flags S/SA
> pass in on em2 inet all flags S/SA
> pass in on egress inet proto tcp from any to (egress) port = 22 flags S/SA
> pass in on egress inet proto tcp from any to (egress) port = 993 flags S/SA
> pass in on egress inet proto tcp from any to (egress) port = 80 flags S/SA
> pass in on egress inet proto tcp from any to (egress) port = 443 flags S/SA
>
> # tcpdump -n -e -ttt -i pflog0    # from man pflog man page
> Jun 26 09:45:54.241145 rule 4/(match) block in on vether0:
> 192.168.123.2.38022 > 216.58.216.165.443: P 0:1375(1375) ack 1 win 1805 (DF)
> Jun 26 09:45:54.701283 rule 4/(match) block in on vether0:
> 192.168.123.2.38022 > 216.58.216.165.443: P 0:1375(1375) ack 1 win 1805 (DF)
> Jun 26 09:45:55.623757 rule 4/(match) block in on vether0:
> 192.168.123.2.38022 > 216.58.216.165.443: P 0:1375(1375) ack 1 win 1805 (DF)
> Jun 26 09:45:57.460985 rule 4/(match) block in on vether0:
> 192.168.123.2.38022 > 216.58.216.165.443: P 0:1375(1375) ack 1 win 1805 (DF)
> Jun 26 09:46:01.150933 rule 4/(match) block in on vether0:
> 192.168.123.2.38022 > 216.58.216.165.443: P 0:1375(1375) ack 1 win 1805 (DF)
> Jun 26 09:46:08.522599 rule 4/(match) block in on vether0:
> 192.168.123.2.38022 > 216.58.216.165.443: P 0:1375(1375) ack 1 win 1805 (DF)
> Jun 26 09:46:47.479083 rule 4/(match) block in on vether0:
> 192.168.123.2.46549 > 172.217.3.206.443: P 4042174712:4042174735(23) ack
> 2564095917 win 1593 (DF)
> Jun 26 09:46:47.896295 rule 4/(match) block in on vether0:
> 192.168.123.2.53452 > 23.23.126.54.443: P 4003838125:4003838156(31) ack
> 2044539346 win 65535 (DF)
> Jun 26 09:46:47.896662 rule 4/(match) block in on vether0:
> 192.168.123.2.53452 > 23.23.126.54.443: R 31:31(0) ack 1 win 65535 (DF)
> Jun 26 09:46:47.896674 rule 4/(match) block in on vether0:
> 192.168.123.2.59762 > 216.58.216.163.443: P 113176577:113176608(31) ack
> 2619790719 win 1403 (DF)
> Jun 26 09:46:47.896685 rule 4/(match) block in on vether0:
> 192.168.123.2.59762 > 216.58.216.163.443: F 31:31(0) ack 1 win 1403 (DF)
> Jun 26 09:46:47.896711 rule 4/(match) block in on vether0:
> 192.168.123.2.39279 > 31.13.77.6.443: P 4254697166:4254697197(31) ack
> 2615144509 win 1545 (DF)
> Jun 26 09:46:47.896735 rule 4/(match) block in on vether0:
> 192.168.123.2.39279 > 31.13.77.6.443: R 31:31(0) ack 1 win 1545 (DF)
>
> # pfctl -R 4 -sr
> block drop log all
>
> It is not all https traffice that is being blocked as I can hit my banking
> site, etc.  Does anyone have an idea why are these packets being blocked?
>
> Thanks,
> Steve Williams
>
>
>
>

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