nftables

  1. 3CX SBC - Set DSCP with nftables

    I noticed in the v20 Update 7 release notes that it says, "marked RTP traffic as high priority (TOS 46) ". When I upgraded to v20 about a year ago, I was surprised that the latest SBC software doesn't set industry standard QoS markings. I got to work in nftables to mark packets with correct...

  2. Make PhoneSystem available from outside/not localhost

    I'm currently working on an C# extension for our on premise 3CX. I'm currently trying to make the ports (5482, 5432 and 5485) used for communicating with the 3cx available for outside connections. I already whitelisted my ip in the nftables configuration but it seems like the 3CX only listens on...
  3. NicholasBarnes

    IPv6 and nftables firewall

    Further to post: https://www.3cx.com/community/threads/something-is-wrong-in-nftables-slaac-not-working.88205/ The default firewall ruleset doesn't work with some IPv6 installations. This is for two reasons - firstly because multicast packets are dropped before the ICMPv6 accept rules and...

  4. How to add additional port for SSH access

    Hi All, We have a new customer that has an on-premise 3CX Server running V18 on Debian 10 (it was fresh installed as V18). In order to get remote SSH access, we have requested a port forward to Port 22, but apparently that is already in use, and they can't forward, say, Port 22222 (external)...
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