? for computer people - technical

[alien amp pharm]

I'm trying to connect to a buddy's computer w/no luck

I ping his IP address and it fails
I ping Yahoo.com and it passes

He pings my IP address and it fails
He pings Yahoo.com and it fails
(but yet he can get on yahoo.com from his browser)

Could it be because he is on a firewall at college w/ a wireless connection?
Any help is appreciated.

 

[solidg]

what operating system? what are your tcp/ip settings?

 

[jh1]

Check his proxy settings in his Web Browser.

If he cannot resolve yahoo.com, then something is doing it for him when he goes to visit the site. The only scenario that I can think of where his IP stack cannot resolve the address yet he can still get there is if he is using a proxy server that is doing the resolution for him.

 

[alien amp pharm]

what operating system? what are your tcp/ip settings?

I'm windows 2000 professional
(IP/DNS obtain automatically)
I'm on DSL, no firewall (expect for software firewall)

He is Windows 98
(not sure what all his settings are)
He is on the college wireless network

 

[solidg]

Soiunds like the firewall or proxy. You can config it to block pings but allow web access.

 

[alien amp pharm]

Soiunds like the firewall or proxy. You can config it to block pings but allow web access.

Is there a way he can get around this so that we can connect?

 

[Lumberg]

what are your IP addresses?

Where did you get them? From your computer settings? Cos certain ranges are reserved for intranet. Did you try http://www.whatismyip.com/ and see if it matches?

 

[alien amp pharm]

Lumberg, I went there and they do not match, however it still doesn't allow us to connect with either IP address we enter.

 

[TC2]

Is there a way he can get around this so that we can connect?

Take your baby dick outta the CD ROM maybe??

 

[solidg]

no

 

[Lumberg]

Lumberg, I went there and they do not match, however it still doesn't allow us to connect with either IP address we enter.

That means you are on a subnet and the IP displayed at whatismyip is actually the IP of the firewall not your actual computer.

You have to contact the administrator of the firewall to figure out if you need port forwarding or what.

 

[Dial_tone]

Your inability to ping has little to do with your inability to connect to each. His firewall is probably dropping the ping packets instead of replying, a common security precaution. You need to find the ports that are needed by the application you're trying to use. No doubt some of them are closed because his university will be using NAT. Perhaps there's a way to tunnel it over a port that may be open.

 

[alien amp pharm]

Ok that makes sense.
Thanks guys.