sshd on two fibs
Doug Hardie
bc979 at lafn.org
Mon Sep 21 00:35:51 UTC 2020
> On 20 September 2020, at 16:20, Grzegorz Junka <list1 at gjunka.com> wrote:
>
> I have two WANs and a server with two interfaces, each interface reaching different WAN. The server is configured with two routing tables, fib0 and fib1, one per the corresponding interface.
>
> I would like sshd to listen on both interfaces but on different fibs, so that returning packets are sent to the proper gateway. Can I do it with one sshd? Do I need to run two separate sshd's? Can I run two separate sshd's on the same box?
I have sshd running on two interfaces by using pf to handle the situation. /etc/rc.conf contains
sshd_enable="YES"
pf.conf contains
ext_if = "em0"
back_if = "em1"
set skip on lo0
SSH = "nn"
pass in all
pass out all
pass in log on $back_if proto tcp from any to any port $SSH
pass in log on $back_if reply-to ($back_if 192.168.1.254) proto tcp from any to any port $SSH keep state
where:
nn is the non-standard port I use for ssh
192.168.1.254 is the router for the second interface.
I don't use fibs at all for this, although I do have them setup for when I want to check out the second port connections.
-- Doug
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