Incoming UDP ports being dropped



  • Hi All,

    I have a Video/Voice server sitting in my environment, I can make outgoing calls and UDP connections are fine (Voice/Video from my units are reaching remote destination) but the traffic from the remote destinations are being dropped.

    I setup my server to have a virtual IP that was provided from my ISP, created a 1:1 NAT Rule and opened the following ports:

    • 5060

    • 5061

    • and the Media Port range the server is using

    First 2 are TCP and the last is UDP.

    Initially, looking at the logs in the firewall rules, outgoing UDP ports were being blocked, but I enabled that. But I can't seem to figure out why incoming UDP ports from my WAN interface is being dropped.
    I even did a packet capture on the interfaces. I see the UDP traffic hitting my WAN interface, but when I run the PCAP on my Internal Interface, I don't see them.

    Oh, I forgot to mention, I also created an outbound rule for traffic to from that server to only go though my public IP. So not sure what is going on. I've seen a bunch of forums but none are really helping.

    Any ideas are welcome :D

    Regards!


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