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Opening Port 80 HELP

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topdawgg19

Programmer
Sep 26, 2004
9
US
Heres the situation... I am currently running windows XP and using Norton Personal Firewall. Now a friend of mine needs to be able to access my computer via port 80.

I know his IP address and even though I use it in Norton, it still will not allow him to access me. If I turn off Norton it will.

Now, how can I test if port 80 is open? Like if I use one of my other computers and try to access port 80? I know that using telnet you can "open IP port" but that only times out... is there a command in Telnet to connect to port 80 even though a web server is not running?

Windows XP
P4
Partial T1 connection with static IP's
Behind Norton Personal Firewall 2004

-Thanks for any help. I have tried every post I can find so now to you guys :)
 
If a service isn't running on a port, the port won't respond. If you have a web server running you can "telnet <address> 80" to make a basic TCP connection to it.
 
There is no other way to test if it is currently open?
 
What way would you like? You can run "netstat" on the computer to see if it is open locally. To determine if it's open remotely, you need to make a TCP connection to it. Web Browser, Telnet, something.

"is there a command in Telnet to connect to port 80 even though a web server is not running?"

If nothing's listening on port 80, then the port isn't open. No telnet command will make a remote computer respond on a port that it's not using.

 
Maybe I am not being clear...

I dont want the port to be open completly, anotherwords I dont want anyone to be able to use it. Only the IP i specify. Therefore, "netstat" would not show this port as listening because Norton is disabling it.

I have configured Norton to allow complete access to a specified IP address, but I dont believe port 80 is working that way because he can not get into the server until I turn off Norton.

I want to try and set this up with Norton and test it before puttting the settings on the Server. But since I am not currently running a server, and I do not want to completly open the port...(therefore "netstat" will not show it as listening.) there is nothing I can do?

-Thanks for the replies guys
 
Half open ports can cause more trouble than they are worth, I would just stick with a) using the software to limit access (I'm guessing a web server of some sort?) or b) in addition, using Norton and/or Windows Firewall to limit access to the listening port.

----------------------------
"Security is like an onion" - Unknown
 
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