Finding network block

[danielbhatoa]

Hi,

My university is spread over 3 campuses , A,B & C. I have trouble accessing a couple of websites at A & B campuses. The 3rd campus (C) connects to the outside world via a different link.

I can view

http://www.aspire-aimhigher.co.uk

at campus C, but not A & B. A & B can ping this web address. I've ran a trace route to this website from A & C. Only the 1st 4 hops (out of 15) are unique to a campus. Both sites use a similar address xxx.xxx.yyy.yyy (yyy are different at each campus).

I can access the site from A&B via an external proxy server. I can get end to end connectivity, but not web access through IE. What I think is that there is a firewall block somewhere along the way, but I don't know how to track where the block is.

Any help much appreciated.

Thanks

Dan

 

[danielbhatoa]

I've spoken to our network analysts and I'm told there are no internal to external blocks on our side of the network.