[SOLVED] Zentyal's firewall and binaries in home directories

[PsynoKhi0]

Greetings,
I have a binary located under the first Zentyal user's home directory. This binary acts as a server that I would like to use on our LAN, though without having it started as a service. Is there a way to configure Zentyal's firewall to open the necessary ports or do I have to manually add an iptables rule?

Edit:
SOLVED - I answered my own question and made a small bash script with the appropriate iptables rule, which I launch before running the binary (the hand-crafted rule isn't saved by the way, the binary is to be launched ad-hoc anyway). There might be more elegant solutions but this works for me for now.