All,

I had to compile Binkd on Rocky Linux 10 and everything seems to work fine. Outgoing packets are sent properly but Binkd does not respond to incoming traffic from the Internet. I have verified that the firewall rules in OPNsense (which powers my Firewall) is not the issue and Binkd responds fine if I telnet to port 24554 on my internal network.

I'm wondering if there is a compile flag I missed?

This is what binkd -vv says:

Binkd 1.1a-115 (Jun 13 2026 11:48:51/Linux)
Compilation flags: gcc, zlib.
Facilities: fts5004 ipv6


I've been trying to find documentation covering all available compilation flags (I'm not a developer) so any information on this is more than welcome.

Thanks.


--- NiKom v2.6.0
* Origin: Delta City (deltacity.se, Vallentuna, Sweden) (2:221/242.0)

Hi Joacim,

On 2026-07-02 19:59:53, you wrote to All:

I had to compile Binkd on Rocky Linux 10 and everything seems to work fine. Outgoing packets are sent properly but Binkd does not respond to incoming traffic from the Internet. I have verified that the firewall rules in OPNsense (which powers my Firewall) is not the issue and
Binkd responds fine if I telnet to port 24554 on my internal network.

Did you try both 127.0.0.1 (localhost), and the local ip number on your network (like: 192.168.0.x), and their IPv6 counterparts?

If both work, it must be a firewall or router problem...


Bye, Wilfred.

--- FMail-lnx64 2.3.4.1-B20260520
* Origin: FMail development HQ (2:280/464)

Hi Joacim,

On 2026-07-02 19:59:53, you wrote to All:

I had to compile Binkd on Rocky Linux 10 and everything seems to work
fine. Outgoing packets are sent properly but Binkd does not respond to
incoming traffic from the Internet. I have verified that the firewall
rules in OPNsense (which powers my Firewall) is not the issue and
Binkd responds fine if I telnet to port 24554 on my internal network.

Did you try both 127.0.0.1 (localhost), and the local ip number on
your network (like: 192.168.0.x), and their IPv6 counterparts?

If both work, it must be a firewall or router problem...

Bye, Wilfred.

Yes both localhost and the local IP address works. There are no local firewall active on the server and other services (nntp, etc) works fine from the Internet. The port (24559, forwarded to 24554 in the OPNSense firewall) works fine with my other Binkd installation for this node number when I tried to direct the traffic to that server as a test. Binkd on the new server will simply not work with any traffic from the Internet.

I enabled this in the binkd configuration:

iport binkp
oport binkp
oblksize 4096
timeout 5m
connect-timeout 5m
bindaddr 10.0.2.237
listen *


It did not help.

I agree this looks like a firewall configuration issue but I have tested everything and the only conclusion I can find is that Binkd is the issue.


--- NiKom v2.6.0
* Origin: Delta City (deltacity.se, Vallentuna, Sweden) (2:221/242.0)

On Thu, 2 Jul 2026 21:31:08 +0000
"Joacim Melin" (2:221/242) <Joacim.Melin@f242.n221.z2.fidonet> wrote:

Hi Joacim,

On 2026-07-02 19:59:53, you wrote to All:

I had to compile Binkd on Rocky Linux 10 and everything seems
to work fine. Outgoing packets are sent properly but Binkd does
not respond to incoming traffic from the Internet. I have
verified that the firewall rules in OPNsense (which powers my
Firewall) is not the issue and Binkd responds fine if I telnet
to port 24554 on my internal network.

Did you try both 127.0.0.1 (localhost), and the local ip number
on your network (like: 192.168.0.x), and their IPv6
counterparts?

If both work, it must be a firewall or router problem...

Bye, Wilfred.

Yes both localhost and the local IP address works. There are no
local firewall active on the server and other services (nntp, etc)
works fine from the Internet. The port (24559, forwarded to 24554 in
the OPNSense firewall) works fine with my other Binkd installation
for this node number when I tried to direct the traffic to that
server as a test. Binkd on the new server will simply not work with
any traffic from the Internet.

I enabled this in the binkd configuration:

iport binkp
oport binkp
oblksize 4096
timeout 5m
connect-timeout 5m
bindaddr 10.0.2.237
listen *

It did not help.

I agree this looks like a firewall configuration issue but I have
tested everything and the only conclusion I can find is that Binkd is
the issue.

--- NiKom v2.6.0
* Origin: Delta City (deltacity.se, Vallentuna, Sweden) (2:221/242.0)

While it's running...

sudo netstat -anp|grep bink

and see if it's actually listening on the binkp port. I assume that
binkp is pulled from /etc/services. I have all those commented out in
my config and it just works. I am not sure what listen is, I don't have
one of those.
--
End Of The Line BBS - Plano, TX
telnet endofthelinebbs.com 23
--- SBBSecho 3.37-Linux
* Origin: End Of The Line BBS - endofthelinebbs.com (1:124/5016)

Another option I'm concidering is whether I can use my working Binkd to route packets for one node number to another Binkd on my other (new) server. I'm guessing this is done with processing the incoming packets with a tosser and sending them to the correct node number?

I'm grasping for straws here but I'm really at a loss about how to solve this.


--- NiKom v2.6.0
* Origin: Delta City (deltacity.se, Vallentuna, Sweden) (2:221/242.0)

On Thu, 2 Jul 2026 21:31:08 +0000
"Joacim Melin" (2:221/242) <Joacim.Melin@f242.n221.z2.fidonet> wrote:

Hi Joacim,

On 2026-07-02 19:59:53, you wrote to All: >>

I had to compile Binkd on Rocky Linux 10 and everything seems >> JM>> to work fine. Outgoing packets are sent properly but Binkd does >> JM>> not respond to incoming traffic from the Internet. I have >> JM>> verified that the firewall rules in OPNsense (which powers my >> JM>> Firewall) is not the issue and Binkd responds fine if I telnet >> JM>> to port 24554 on my internal network.

Did you try both 127.0.0.1 (localhost), and the local ip number >> WvV> on your network (like: 192.168.0.x), and their IPv6 >> WvV> counterparts?

If both work, it must be a firewall or router problem... >>

Bye, Wilfred.

Yes both localhost and the local IP address works. There are no >> local firewall active on the server and other services (nntp, etc) >> works fine from the Internet. The port (24559, forwarded to 24554 in >> the OPNSense firewall) works fine with my other Binkd installation >> for this node number when I tried to direct the traffic to that >> server as a test. Binkd on the new server will simply not work with >> any traffic from the Internet.

I enabled this in the binkd configuration:

iport binkp
oport binkp
oblksize 4096
timeout 5m
connect-timeout 5m
bindaddr 10.0.2.237
listen *


It did not help.

I agree this looks like a firewall configuration issue but I have >> tested everything and the only conclusion I can find is that Binkd is >> the issue.

I'll just walk over to the corner of shame here - it was my firewall (OPNsense) that was the problem. Starting with OPNSense 26.1 the old Port Forward stuff was removed and now you configure a Destination NAT and then you have to make sure you set the firewall rule setting in that Destination NAT setting to "Pass". It doesn't seem to help to create the rule on the WAN interface manually, you have to do it when you create the Destination NAT setting for that port.

Thanks all for patience and answers.


--- NiKom v2.6.0
* Origin: Delta City (deltacity.se, Vallentuna, Sweden) (2:221/242.0)

Hello Joacim!

02 Jul 26 19:59, you wrote to all:

I'm wondering if there is a compile flag I missed?

This is what binkd -vv says:

Binkd 1.1a-115 (Jun 13 2026 11:48:51/Linux)
Compilation flags: gcc, zlib.
Facilities: fts5004 ipv6

Can you try netstat -a4n? Or with the new tools, ss -tuln

I've been trying to find documentation covering all available
compilation flags (I'm not a developer) so any information on this is
more than welcome.

Thanks.

--- NiKom v2.6.0
* Origin: Delta City (deltacity.se, Vallentuna, Sweden) (2:221/242.0)

Javier


--- GoldED+/BSD 1.1.5-b20260304 + HPT 1.9.0 + Binkd 1.1a-115
* Origin: FIDONODO DE JAS | ¯\_(O,O)_/¯ (4:900/733)