NethServer Version: 7.4 CentOS Version: 7.5 I would like to test Mattermost on a NS7.4 running in my DMZ at home who is accessable via dyndns, for example mattermost.zapto.org . The Server is up and running, so whats next? What port must be opened on the GW? What hostname should I use for Matte…

Conclusion for Mattermost: [image] fausp: OK, I took a step forward. I can reach my private mattermost server via Internet… I had to forward port 443 on the Internet-Gateway to my Firewall. Another portforward from the Firewall with NAT to my mattermost server in the DMZ. Just use my DynDNS-…