Opening ports on Firewall - MultiServer

Discussion in 'ISPConfig 3 Priority Support' started by NeonTigerUK, May 5, 2017.

  1. NeonTigerUK

    NeonTigerUK Member HowtoForge Supporter

    Hi Till & Team

    I am trying to open a port on one of my servers in my MultiServer setup, I have added the port to the firewall rules in the Server setup in ISPConfig / System / Firewall, but a port scan on MXToolbox reveals that the port remains closed.

    Can anyone please advise how i can get this port opened (443 on a mail server - i'm following the guide here https://www.howtoforge.com/community/threads/letsencrypt-on-mail-server.73695/#post-349372 to add Lets Encrypt to my mail servers)
     
  2. till

    till Super Moderator Staff Member ISPConfig Developer

    check with iptables if the port is really closed. Maybe you just don't run a service on that port.
     
  3. Tomislav Aurednik

    Tomislav Aurednik Member HowtoForge Supporter

    Check that you're not blocking it on the router. If you're using only 1 public IP with the multiserver setup, you're probablly routing port 443 to the webserver for https websites.
     

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