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http:// OR www. ?

By Peter Johnstone ·
We have a strange problem on IE (XP Pro SP2) with a single computer, all the other 140 on the domain are OK (Win Server2k3) If www.example.com is typed into the address it will not open the page. If http://www.example.com is then the page opens OK as normal.
Can anyone throw any light on it?

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by Blowtoad In reply to http:// OR www. ?

I would use TCPView from sysinternals to monitor what the browser is trying to connect to. when you leave off the http:// perhaps IE is trying to connec to some strange port. If you don't have TCPView, you can download it free from http://www.sysinternals.com/Utilities/TcpView.html

Also, just try going to www.example.com:80 That should tell IE to connect to port 80 on the remote server.

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by Peter Johnstone In reply to

Poster rated this answer. Thanks for the reply. The problem turned out to be an overlooked setting on our hardware firewall. However your answer did provide useful information. Thanks, PJ

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by CG IT In reply to http:// OR www. ?

though broswers are some what smart, they only process what you type in the address bar. http:// indicates your looking for a web site with the name www.<domain name>.com. Just as ftp:// indicates your looking for a file transfer program site.

When Internet name servers query other name servers for an address for www.<domain name>.com if there isn't an A record for wild card e.g. *.<domain name>.com, the authoritative DNS server for the domain name won't return the query to the Internet name servers the address for www.<domain name>.com

www. is part of the domain name. Example: com is the top level, then next is the .<domain name> then next is the www or sales or support or whatever the subdomain is. DNS would have A records that indicate sales.<domain name>.com is address xxx.xxx.xxx.xxx so you would be taken to that address which can display a web page. Without indicating what your looking for by using the http:// or ftp:// browsers assume http:// on port 80. As we mentioned above DNS has to be able to resolve a query for www. to return an address else the error page can not be displayed is returned in the browser.

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by Peter Johnstone In reply to

Poster rated this answer. Thanks for the reply. The problem turned out to be an overlooked setting on our hardware firewall. However your answer did provide useful information. Thanks, PJ

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by ctrservices In reply to http:// OR www. ?

Try doing an uninstall/reinstall through Add/Remove programs, Add/Remove windows components.

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by Peter Johnstone In reply to

Poster rated this answer. Thanks for the reply. The problem turned out to be an overlooked setting on our hardware firewall. However your answer did provide useful information. Thanks, PJ

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by Peter Johnstone In reply to http:// OR www. ?

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