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Originally Posted by BBKing
Jez - I suggest a quick course of Robin Walker's cable broadband guide, which specifically states that you should allow your local UBR private IP and your DHCP servers through your firewall to prevent spurious attack indications. Because your firewall is *behind* your router, the modem-to-ubr communication is unaffected. It's only router-to-ubr communication (DHCP in particular) that could be affected. Still best to allow the IP through.
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Thanks! I checked the relevant bit of the guide as you suggested - think I only understood one word in five
but enough to see that my router's firewall is locked down too tightly ... I can turn back on the response to ICMP pings OK, but otherwise the firewall is either on or off (and Belkin's support have just confirmed this). I'm kind of reluctant to turn it off and use a software firewall on each of the PCs instead unless there's a compelling reason to do so - I take it that if things are basically working OK, then there probably isn't?