Port oddity

Greetings,
Have an odd scenario where a public website pulls some images from another server via port 81. When our staff use the site they fail to get most images, but everything else loads correctly. I have tried unloading filters and it has no affect.
NW6.5 sp6 BM3.8 sp5_IR1
Those behind BM boxes are encouraged to try... Enter "wheel" in the search field and press "go". (none of these images appear for us)
Historic Artifacts and Library Documents
First in the results list is "Great Wheel", the image URL is: http://memorialhall.mass.edu:81/liza...id=283&hei=250
This site works fine outside of our building.
Any insight to this is appreciated.

Originally Posted by Craig Johnson
Further update.
I kept retrying on the proxy connection, and eventually the image of
the great wheel filled in. I think that particular example is just
related to slow response time on the origin server.
I normally change one of the default settings on BMgr servers for
situations like this. In the Transport tab in the BMgr config
(NWADMN32 or iManager for 3.9) I change the 30 second timeout to 45
seconds to give proxy more time to make connections to slow web sites.
Craig Johnson
Thanks to all whom responded.
I discovered a solution for this issue while addressing a video streaming problem that recently surfaced for us. Turns out that solution helped this problem as well.
I found a small Non-Standard ports section in the Advanced topics chapter of Craigs book that discusses websites that redirect browsers to non-standard ports. He discusses allowing just the proxy's public interface access to the non-standard port.
I modified the rule to allow just the BM public interface access to port 81 and all the website images now appear.
Thanks Craig!

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