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Port forwarding for LinkSYS PAP2


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Old 01-12-2005, 12:35
brundles
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Join Date: Sep 2003
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Well I've now got the PAP2 setup and running nicely using SIPGATE on the existing house phones (despite the wifes complaints that it's an excuse to buy top of the range VOIP phones!).

The thing that has me slightly concerned is the port forwarding range the adapter seems to want. Most of them are fine, just a couple of ports here and there and I can see the reason for them. The one that has me concerned is the 10000 to 20000 forwarding.

10,000 ports? What does it need that many for?

Two questions from that:
1. Does anyone (BexTech?) know why the extreme range and whether is can be reduced?
2. Are there any guaranteed triggers I could use to setup port triggering rather than port forwarding?
2b. Assuming the router is a NAT router, is it necessary to forward the 10,000 ports? Working on the assumption that this is to allow the PAP2 to shift incoming connections onto other ports (same as an FTP or Telnet server) this activity should be transport to the device/Internet on a NAT router anyway.

I guess a third is:
3. If this is left with the forwarding that's there, how robust is the PAP2 against the amount of junk and malware we have floating around the net? Is it likely to fall over just because some script kiddie is trying to exploit the latest MS exploit?

Thanks very much!

Last edited by brundles : 01-12-2005 at 12:48. Reason: Added 2b
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Old 02-12-2005, 04:33
BexTech
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I have a LinkSys router on which my PAP2 ATA is attached, I have no ports forwarded, nor the device in a DMZ and all works fine.
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