(Posting with iCab)
I didn't want to change the router settings, for that is just about impossible with the browsers I use - which means I didn't test iCab with it either - so instead I run a native webproxy. vlink slows down transfers a lot but the browser isn't very fast either. Even if it is a 1994 CPU pushing the bits.
I had to hunt the web for 'InternetConfig' to be able to use the proxy, since I use an old version of the OS.