SIP issle with .99 Beta for Flint 3

Routers
1

I’m seeing some strange issues with port forwarding on the Flint 3.

  • UDP/5060 is forwarded from WAN to LAN 10.1.1.1
  • Tried with FW rule in place and without
  • nmap from my Oracle Cloud shows TCP/5060 open and UDP/5060 Open/Filtered
    • No forwarding rule for TCP/5060 exists.
    • Flint 3 appears to be listening on this port.
  • TCPDUMP on 10.1.1.1 shows no inbound traffic
  • Forwarding 22/TCP WAN→LAN works fine
  • Tried with ALG en/disabled
  • Enabling DMZ to 10.1.1.1 seems to work as nmap shows UDP/5060 open

Any ideas on why port forwarding appears to be not working? Anyone else having this issue?

4

Hi

We have tested this locally on a Flint 3 running firmware v4.8.99 and have not been able to reproduce the issue—the port forwarding rules are working normally on our side.

Please help to check the following:

  1. Provide a screenshot of your current Network > Port Forwarding configuration.
  2. SSH into router and run the following command to verify whether the corresponding rules have been created:
nft list ruleset | grep 5060
5

what does sngrep show?