18.1.9 Static port does not work with RTSP server UDP mode

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overopn

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18.1.9 Static port does not work with RTSP server UDP mode

« on: June 04, 2018, 05:37:44 am »

Hi, I have RTSP server in my LAN. I can connect to it fine with TCP but not with UDP. I understand there is a source port rewrite which I must disable, however that is not working.

When I do a packet capture on WAN, I can see the TCP part going back but the UDP packets are going to a different (and wrong?) port.

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marjohn56

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Re: 18.1.9 Static port does not work with RTSP server UDP mode

« Reply #1 on: June 04, 2018, 06:56:20 pm »

Try splitting the rules, so have two rules, one for UDP and one for TCP... should work as is, but it's a question of ruling things out... or in, as the case may be.

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OPNsense 21.1.a* - Qotom Q355G4 - ISP - ZEN U.K.

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overopn

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Re: 18.1.9 Static port does not work with RTSP server UDP mode

« Reply #2 on: June 09, 2018, 10:29:47 am »

I tried pfsense and face the same issue, and I worked with an experienced pfsense guy and determine it is a bug with pfsense, and it does not happen with old pfsense 2.3

Seems opnsense have this bug too since they share same code base?

https://forum.netgate.com/topic/131765/nat-problem-with-rtcp-server

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marjohn56

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Re: 18.1.9 Static port does not work with RTSP server UDP mode

« Reply #3 on: June 09, 2018, 11:07:16 am »

The are both FreeBSD based, but the fork to Opnsense happened before pf 2.4 so it suggests an issue upstream.

Have a look at /tmp/rules.debug.. does that show the correct rule?

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