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    Port Forwarding help

    This is a discussion on Port Forwarding help within the Sky Router forums, part of the Sky Broadband help category; http://www.skyuser.co.uk/forum/view-ports.html...

    1. #1
      NewsreadeR's Avatar
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      Port Forwarding help

      Last edited by NewsreadeR; 17-09-08 at 11:26 PM.




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    3. #2
      p-green's Avatar
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      Question Ports closed by default

      If the Netgear's router ports are closed by default, why did I not need to explicitly open port 80 to access the internet ? It did not seem to be already set up as a service but I can still access the internet. Just interested to know, that's all.

    4. #3
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      By default on the router all incoming ports are closed and all outgoing are open.

      A firewall is only a filter - but one with some intelligence. All internet communication is achieved through the exchange of packets of information. The firewall examines every packet sent and received. When you surf you are making an outgoing connection. The incoming reply is allowed because you initiated the exchange so it is deemed OK. So it is incoming where you haven't initiated the connection (with an outgoing) that is blocked (ignored).

    5. #4
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      I need some help because when I forwarded my Port for Utorrent, I have a very slow download speed. (6hrs for 175M)

      when you forward the port (39864) it tells you to set up a virtual router but I am unable to find one in the Netgear page, hell it took me to stumbling on to this site to find out that 1234 is not the password for sky's router.

      Is there something obvious I'm doing wrong?

      Any help would be greatly appreciated.

    6. #5
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      http://www.skyuser.co.uk/forum/view-azureus.html

      try that

      same sort of principle or change to azureus




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    7. #6
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      I was wondering if someone can help me here... Okay so it has a built in firewall.. i heard from a review it has a NAT aswell.. all good.. i didnt have to configure anything and LIMEWIRE says i got FULL connection, So does the new SHAREAZA and I did a connection test for the AZURUES ports and its all working.. then i did the SYMANTEC SECURITY CHECK .. and it says everything is fully secure.. then why do people say i need port forward if it all works without port forwarding?

    8. #7
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      Because the router uses UPnP and presumably the applications you refer to do as well.

      Benefits of UPnP:
      1. It avoids needing to do things like port forwarding for some applications (it can do far more than that).


      Downside of UPnP:
      1. You lose a degree of security in that you don't know or can't easily control what applications (including malware) have set themselves up an internet connection.
      2. UPnP implementation is flawed in the Sky router. For some people it causes regular and frequent disconnections.


      If you turn off UPnP for either of the above then you need to manually set up port forwarding.

    9. #8
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      Oh Thanks for that man!
      Last edited by Saturday; 20-12-06 at 03:04 PM. Reason: removed full quote of preceeding post

    10. #9
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      I'm having a few problems with port forwarding it seems...

      On my home network, I have a Linux PC that I use as an ftp server and connect to via ssh from time to time.

      I used to be with wanadoo and have just switched to sky. I was using a DG834G router with wanadoo, so I setup the sky GT router in exactly the same way. Unfortunately, the router doesn't forward those ports - ssh connections fail with "unable to connect to host" although the router has the ssh port (22) open in the firewall and being forwarded to the correct IP address for the machine.

      I have tried rebooting the router, and unplugging it and leaving it unplugged for a bit. Neither seems to help. Can anyone suggest anything else I can try?

      Thanks

      d3viant

    11. #10
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      Ok, found the problem - the firmware on the sky router is not based on the most recent netgear firmware, so NAT doesn't work quite properly. If the router receives a packet destined for itself from within the LAN, then it's meant to figure out that it is the destination and send the packet back into the internal network using the standard NAT firewall rules. The re is a netgear update for this - but obviously it's not in the sky router yet. Connections do appear to work externally, so it's fine for the time being I guess...

     

     
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