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Port scans getting past WRT54G

Discussion in 'HyperWRT Firmware' started by Zeus, Mar 4, 2005.

  1. Zeus

    Zeus Network Guru Member

    This is my first post here. I don't know if this issue has anything to do with the HyperWRT Firmware; but, since Im using v3.03.6 - HyperWRT 2.1b1 I thought I should post here.

    If I run a shields up test from www.grc.com - it shows all stealthed as expected. However I'm getting port scanned from the yahoo chat servers and those scans are getting past the WRT54G router and being picked up by my outpost pro software firewall.

    I do have the firewall enabled and all the Block WAN requests options enabled. I don't have any of the filters enabled.
  2. auslander

    auslander Network Guru Member

    Do you have anything defined in the DMZ?
  3. Zeus

    Zeus Network Guru Member

    No nothing on the DMZ and the DMZ is set to disabled.
  4. sillygoose

    sillygoose Network Guru Member

    Are you running yahoo chat? And do you have UPnP enabled? If so could it be opening up ports to allow yahoo chat to work?
  5. Toxic

    Toxic Administrator Staff Member

    you have answered your question, using yahoo or any chat relay will open posrts on your system. obviously yahoo chat client need to "chat" with the clients server which is trying to contact your client.

    also grc has been known to produce scanmongering tactics. i would strongly advise using some other scanner like

  6. Zeus

    Zeus Network Guru Member

    If I were logged into Yahoo chat at the time of the port scans or had UPnP enabled, it would make sense. However, the port scans don't occur when I'm logged into yahoo chat.

    I ran the sysgate scans and the router blocked them all as expected.

    I have logging enabled and the inbound log is empty.

    I just switched from a netopia/caymen adsl router, because I switched from dsl to cable. I never had any reports from behind the netopia router (with firewall).

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