Re: PF and tun1

After every change I did a pfctl -f /etc/pf.conf.

On Tue, Dec 28, 2021 at 1:41 PM Shamim Shahriar
<shamim.shahriar@gmail.com> wrote:
>
> Have you tried reloading pf rules once tun1 is active/up?
>
> On Tue, 28 Dec 2021, 19:35 Alex Thomas, <karlthane@gmail.com> wrote:
>>
>> I have tried that, and have commented out the table for rfc6890 and
>> the rules for it. Still not having any success.
>>
>> On Tue, Dec 28, 2021 at 1:28 AM Morgan Wesström
>> <freebsd-database@pp.dyndns.biz> wrote:
>> >
>> > On 2021-12-28 02:55, Alex Thomas wrote:
>> > > I am trying to get nebula working on tun1 with pf as my firewall. If I
>> > > turn pf off, everything works. How to I tell pf to ignore / let
>> > > everything pass on the tun1 device.
>> > >
>> > > vtnet0 = "vtnet0"
>> > > nebula1 = "tun1"
>> > > icmp_types = "{ echoreq unreach }"
>> > > table <bruteforce> persist
>> > > table <rfc6890> { 0.0.0.0/8 10.0.0.0/8 100.64.0.0/10 127.0.0.0/8
>> > > 169.254.0.0/16          \
>> > >                    172.16.0.0/12 192.0.0.0/24 192.0.0.0/29 192.0.2.0/24
>> > > 192.88.99.0/24    \
>> > >                    192.168.0.0/16 198.18.0.0/15 198.51.100.0/24
>> > > 203.0.113.0/24            \
>> > >                    240.0.0.0/4 255.255.255.255/32 }
>> > >
>> > > set skip on lo0
>> > > set skip on tun1
>> > > set skip on $nebula1
>> > > scrub in all fragment reassemble max-mss 1440
>> > > antispoof quick for $vtnet0
>> > > block in quick on egress from <rfc6890>
>> > > block return out quick on egress to <rfc6890>
>> > > block all
>> > > pass in on $vtnet0 proto tcp to port { 22222 } \
>> > >          keep state (max-src-conn 15, max-src-conn-rate 3/1, \
>> > >                  overload <bruteforce> flush global)
>> > > pass out proto { tcp udp } to port { 22 53 80 123 443 }
>> > > pass out inet proto icmp icmp-type $icmp_types
>> > >
>> >
>> > In my experience the skip rules only work on interfaces that are available when
>> > pf starts, which excludes tun-interfaces. I don't know if this is by design.
>> > Remove your skip rules for tun1 and $nebula1 and just add a pass rule for that
>> > interface:
>> >
>> > pass on tun1 all
>> >
>> > Additionally, since you're quick blocking all traffic to and from private IP
>> > addresses, make sure you don't use any of those IP addresses on tun1.
>> >
>> > /Morgan
>> >
>>