Adjust Maximum Segment Size?

Stefan Lambrev stefan.lambrev at
Tue May 27 09:37:24 UTC 2008

Bjoern A. Zeeb wrote:
> On Tue, 27 May 2008, Stefan Lambrev wrote:
> Hi,
>> Is there a way to adjust MSS just like in cisco's "ip tcp adjust-mss"?
>> I want to play only with MSS not with MTU.
>> So far the only solution that I found is pf+scrub, but I wander if it 
>> is possible to do it without
>> firewall.
> depends on how you want to do it? Are you asking becuase you are
> running ppp or mpd? Or do you want to change it globally for
> everything of a machine?
I'm experimenting with gre tunnels - the problem comes from async routes.
 From gre0 I receive traffic, but replies are sent over Ethernet card.
So I can't make mtu on if0 the same as the mtu on gre0.


Best Wishes,
Stefan Lambrev
ICQ# 24134177

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