On 29 Feb 2008, at 15:22, paul at clubi.ie wrote:
> On Fri, 29 Feb 2008, Niall O Broin wrote:
>>> s8A -> s8B TCP D=22 S=32858 Syn Seq=3908249784 Len=0
>> Win=24820 Options=<nop,nop,sackOK,mss 1460>
>>> s8A -> s8B TCP D=22 S=32858 Syn Seq=3908249784 Len=0
>> Win=24820 Options=<mss 1460,sack 16843778-2895157918|>
>> Wow, it's mangled the options.
>> I'm guessing this router is also doing firewalling and/or NAT..
The router does NAT, though it is turned off for these connections.
It also has firewall functionality, which is explained on page 248 of
the manual, apparently - I can't tell, as the manual has < 150 pages.
Spelunking around the nasty Windows configuration tool, I don't find
it named as such - there is a packet filtering option, but there are
none defined.
I'm 99.99% sure that this nasty nearly 10 year old ISDN router is the
source of my woes. Why don't you replace it with a VPN, I hear you
say? Bloody good question, I say, and I wish I knew the answer to it.
Niall
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