Author Topic: HT502 Nat-port forward problem on 1.0.3.10  (Read 1586 times)

gobris

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HT502 Nat-port forward problem on 1.0.3.10
« on: January 08, 2011, 12:12:14 PM »
hello,
I am using HT-502 as router  behind my cable modem.
I got no problems on voip or normal data transfers but, i am not sure if it is related or not with p2p usage , every 1-2 days, all my port forwarding rules stops working. I got two servers behind this device, (one of them is just using p2p/torrent traffic) with different ports web ssh etc that should be reachable from outside world...Meanwhile  Inbound traffic and voip works fine but i can not reach devices behind ht-502  from outside IPs until i reboot the device.
After rebooting it keeps on working 1-2 days more. Then needs another reboot.

I am using HT-502 V1.1C with 1.0.3.10 firmware

mpdavig

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Re: HT502 Nat-port forward problem on 1.0.3.10
« Reply #1 on: January 10, 2011, 01:55:17 PM »
This is not a new problem. I have personally experienced this issue since obtaining this device (HT502) back in February 2010 with every firmware since 1.0.1.35.

See "HT502 port forward limitation?" which also mentions this issue.
http://forums.grandstream.com/forums/index.php?topic=7458.msg24934#msg24934

Like you, I only forward ports 22 and a bit-torrent port but having to reset the unit every couple of days is really annoying and should have been fixed ages ago.

I'm forwarding to a Fedora 7 host with IP 192.168.2.100.

gobris

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Re: HT502 Nat-port forward problem on 1.0.3.10
« Reply #2 on: January 10, 2011, 02:05:22 PM »
Hi,
I couldnt be sure if it is just port-forwarding limitation or max allowed connection limitation.
Lowering tcp-udp timeouts helped a little but even for now, i need to restart every 3-4 days.Seems like it stucks at maximum active/idle connection limit. But cant be sure.
Seems HT-502 is not a nice solution for using as router/gateway.
It even doesnt have an option to make a dhcp release static.(which isnt a big deal actually but it might be nice)

Maybe better to use linux server as router/gateway behind cable modem. And use ht-502 just as a single voip client.(which makes problem with voip priority on gateway)

GSSupport44

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Re: HT502 Nat-port forward problem on 1.0.3.10
« Reply #3 on: February 08, 2011, 10:45:24 AM »
Hi gobris,

Does the same problem happen when you set the port forwarding on only 1 port forwarded say to your server.

If so is it possible to get a syslog trace from the moment you restart the device till you lose access to the server you have behind the HT502.

Cheers

gobris

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Re: HT502 Nat-port forward problem on 1.0.3.10
« Reply #4 on: February 08, 2011, 11:13:26 AM »
Hello,
Lowering the tcp and udp timeouts, and lowering torrent conection numbers  temporarily solved my problem.
So, this made me think that ..that problem is related to max. connection number supported by device.