Port 80

  • Thread starter Thread starter jr
  • Start date Start date
J

jr

I read where udpates and downloads go through port 80 and
to make sure its open. How can I check to see if port 80
is open?
 
jr presented the following explanation :
I read where udpates and downloads go through port 80 and
to make sure its open. How can I check to see if port 80
is open?
Click to expand...
Hi

Well, this depends on what firewall you are running.

This explains XP SP2s firewall:
http://www.microsoft.com/windowsxp/using/security/internet/sp2_wfintro.mspx
and
http://www.microsoft.com/windowsxp/using/security/internet/sp2_wfexceptions.mspx

You can check your connections with TCPview from Sysinternals.
http://www.sysinternals.com/Utilities/TcpView.html

For example it is three and after a while four connections established
when running MSAS - "check for updates".

GIANTAntiSpywareMain.exe:2592 TCP X:1390 www.spynet.com:80 ESTABLISHED
GIANTAntiSpywareMain.exe:2592 TCP X:1392 207.46.236.25:80 ESTABLISHED
GIANTAntiSpywareMain.exe:2592 UDP X:1391 *:*
GIANTAntiSpywareMain.exe:2592 TCP X:1393 207.46.236.25:80 ESTABLISHED
 
In general, if port 80, TCP is not open outbound, you won't be able to view
web pages.

However, this is somewhat more complex--but mainly in the area of corporate
networks which may have transparent web proxies.

The Windows firewall should not interfere with getting definitions, but
third-party firewalls which block outbound by application, may.
 
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