Mailinglist Archive: opensuse (3675 mails)

[Tom Francis <tommyracer73@xxxxxxxxxxx>]

OK,

I didnt have this in my iptables...

iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j
TCPMSS --clamp-mss-to-pmtu

Most stuff worked without it except for a handful of
sites. 
I just got someone else to try it and I think thats
done it.

What is mss anyway?

Cheers for all your help :)

Tom...

 --- Tom Francis <tommyracer73@xxxxxxxxxxx> wrote: >
Hi,
> 
> I have a suse 7.1 box set up as my router so that I
> can access the internet from other PC's on my
> network.
> Some websites (www.realnetworks.com, www.bahn.de,
> www.autoscout24.de to name but a few) are not
> available from masqueraded machines, whereas others
> are accessible. The problematic sites, however, ARE
> accessible from the linux machine itself.
> 
> Doing a traceroute reveals that the packets are
> getting most of the way, they just get lost at some
> routers (I think).
> 
> I have seen other instances of people with this
> exact
> problem, but have not managed to find any answers
> yet.
> It also happened exactly the same when I was using
> W2K
> as my connected machine.
> 
> More details as to my setup:
> 
> ISP - German T-DSL using pppoe
> Suse - 7.1 - Kernel 2.4.16
> IPTables (can give the rules if needed, but its just
> basic masquerading that works... *normally*)
> 
> Since installing the linux machine as the router, I
> have tried a setting the MTU and MRU to 1492 but
> this
> made no difference. Interestingly, after setting
> them,
> I STILL get the following errors in the syslog when
> connecting...
> 
> pppd: Couldn't increase MTU to 1500
> pppd: Couldn't increase MRU to 1500
> 
> though checking using ifconfig, the MTU *is* set
> correctly on both eth1(dsl connex) and ppp0 so I
> dont
> think it is an MTU issue. I also tried reducing the
> MTU further (to 1300) but with no affect.
> 
> The only common denominator I have seen so far from
> people with this problem is the use of the german
> T-DSL ISP.
> 
> Help? :)
> 
> Tom...
> 
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