I'm experimenting with ICP caching on BM 3.7. My normal production BM box
points to a upstream Websweeper box (for content virus scanning) in a
firewalled DMZ. Only Websweeper may go to the internet.

In my test I have a second BM 3.7 box with the first configured as a peer
ICP cache, and websweeper configured as a CERN parent, the theory being
that the test box will check its peers cache for a page and if it misses
it will fill the page from the origon via Websweeper.

My config at th moment is frequently giving 502 Bad Gateway timeouts,
however clicking the browser refresh will present the page.

Any ideas ?