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Internet Explorer proxy bug?

We use a proxy server here at my office. I use group policy to add 2 IP addresses to the proxy exceptions list. This has worked fine for a long time.

After all morning of trouble shooting I found a bug where the first IP address in the exceptions list is NOT bypassing the proxy. I had my firewall vendor monitoring traffic and saw my requests for IP address 1 coming from my proxy server. IP address 2 was coming from my local pc as it should. I had to add a dummy IP address of 1.1.1.1 as the first exception to get things working again.

Anyone ever see this or have a fix? This happened on multiple computers here running WIndows 7 and IE 9 and IE 10.

ASKER CERTIFIED SOLUTION

gheist

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giltjr

Can you post your proxy pac file?

gheist

Not if he can post... I think it is more - could Asker implement PAC file or even WPAD?

cb_it

ASKER

We are not using pac files, that I know of. Just plugging 2 IP addresses into group policy. Has anyone ever heard of this bug? Very strange. I did double check the settings and did not see a rogue comma or asterisk anywhere. I may take the first suggestion and have those sites allow the proxy.

giltjr

Stupid question. What happens if you put another IP address as the 1st in the list, say like 127.0.0.1?

cb_it

ASKER

Seems that there was a semicolon missing after all as gheist suggested.

I had <local>1.1.1.1;2.2.2.2;3.3.3.3

I guess there should be a semicolon after <local>. I also read that <local> should be at the end? So I changed it to this 1.1.1.1;2.2.2.2;3.3.3.3;<local> and things work now. Thanks so much for the help

gheist

Read wikipedia on proxy.pac and wpad... It is much easier as all new configuration deploys in an instant.