Jump to content

Hello! ūüĎč

These forums are now archived (read only).

Join us on Discord.

Client bind to interface/IP?

Recommended Posts

Rubin Starset

Hi there. Windows 10 server, Debian client. The Server is a desktop with a static address on an ethernet NIC, and the Debian client is a laptop with both wifi and ethernet through a dock both with separate static addresses. The client likes to connect to the server primarily through my wifi interface. I'd like it to only connect via the ethernet interface (which coincides with when the laptop is actually docked right next to my Windows displays. The messy solution I have is to simply block the Synergy port via an iptables rule for the wifi interface. I'd just like to have a bind to IP/interface that's part of the Synergy client. I couldn't find any info on such a thing, does it exist?

  • Like 1
Link to post
Share on other sites
Rubin Starset


Just for reference here's the messy way I'm doing it with NetworkManager under Debian...

Enable and start the NetworkManager-dispatcher.service:

$ sudo systemctl enable NetworkManager-dispatcher.service
$ sudo systemctl start NetworkManager-dispatcher.service

Create a dispatcher script that contains your rules:

$ sudo vim /etc/NetworkManager/dispatcher.d/wlp61s0-firewall.sh

Note that wlp61s0 is the interface name I'm targeting for these rules:

#!/usr/bin/env bash


if [[ $interface != "wlp61s0" ]] || [[ $event != "up" ]]
  return 0

/sbin/iptables -F		# Clear FW rules
/sbin/iptables -A OUTPUT -o wlp61s0 -p tcp --dport 24800 -j DROP        # Block synergy on wifi

Give the file safer permissions:

$ sudo chmod 755 /etc/NetworkManager/dispatcher.d/wlp61s0-firewall.sh

Cycle the wifi interface down and then back up through Network Manager's UI, then check to see if the iptable rule was added:

$ sudo iptables -S
-A OUTPUT -o wlp61s0 -p tcp -m tcp --dport 24800 -j DROP

If you encounter some issues, check the status of the dispatcher service:

$ sudo systemctl status NetworkManager-dispatcher.service


Edited by Rubin Starset
Link to post
Share on other sites
  • 4 months later...

same situation here... would be nice to specify default 'mode' of connecting the client to the server rather than having it default to wifi each time

Link to post
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now
  • Create New...