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Windows Forum / Windows XP / Security and Administration / June 2005Windows Firewall Exploitable?
I had an interesting question in a TechNet Briefing I delivered yesterday. A customer was wondering what would happen to ports that are open on behalf of an exception defined by application (an .exe listening for unsolicited ports), and that application did not close gracefully. The assumption is that if the .exe is not running, the ports aren't open. But is there any difference if the application crashed suddenly? Would the ports remain open? Thanks!  SignatureKevin Remde IT Pro Evangelist Microsoft Corporation The ports might remain open for a few seconds after the app crashed, but will eventually get cleaned up/closed. SignatureDavid Microsoft Windows Networking This posting is provided "AS IS" with no warranties, and confers no rights. >I had an interesting question in a TechNet Briefing I delivered yesterday. >A [quoted text clipped - 9 lines] > > Thanks! David or Kevin, I currently have Windows XP SP2 and both the forewall/antivirus is ON. I performed a "shieldsUP!" test in www.grc.com and the 23,80 and 443 ports are wide open. Linksys has verified my router and appears to be in good condition (properly secure). What can I do to close/stealth those 3 ports ? Please advise. > The ports might remain open for a few seconds after the app crashed, but > will eventually get cleaned up/closed. [quoted text clipped - 12 lines] > > > > Thanks! do a "netsh firewall show state verbose=enable" and look through the list of open ports (eg Ports currently open on all network interfaces). If you find these in the list, you'll see what app has probably configured the firewall to let it listen. These ports are for telnet and web serving, which it sounds like you aren't expecting to have the machine do. SignatureDavid Microsoft Windows Networking This posting is provided "AS IS" with no warranties, and confers no rights. > David or Kevin, I currently have Windows XP SP2 and both the > forewall/antivirus is ON. I performed a "shieldsUP!" test in www.grc.com [quoted text clipped - 22 lines] >> > >> > Thanks! |
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