Date   : Tue, 11 Aug 2009 17:17:57 +0100
From   : pete@... (Pete Turnbull)
Subject: Econet <> Ethernet

On 11/08/2009 16:34, Rob wrote:
> 2009/8/11 Pete Turnbull <pete@...>:
>> On 11/08/2009 11:37, Phil Blundell wrote:
>>
>>> I just checked the manual for my router (a Speedtouch 536) and you're
>>> right: it can forward UDP or TCP, but it doesn't seem to have any
>>> provision for forwarding other IP protocols.
>> I'd be surprised if that's strictly true, partly because I know that
>> people have linked them to other routers in various ways for various
>> reasons.  For example I'd be very surprised if it doesn't forward ICMP
>> (protocol 1), and it might forward IGMP (proto 2) and even GRE (47)
> 
> I suspect you are talking at cross purposes..

Mmm, that's possible -- I didn't stop to think which direction Phil 
means.  If we're talking about inbound connections, then it might be 
almost as restrictive as Rob suggests (TCP, UDP, ICMP and just possibly 
IGMP). Others traffic probably work inbound only if the connection was 
initiated on the LAN side (ie an outbound connection), and some might 
not work at all.

-- 
Pete                                           Peter Turnbull
                                               Network Manager
                                               University of York