SSH Session disconnecting with pf

[Elliott Perrin]

On Mon, 2008-04-07 at 17:05 -0700, Jeremy Chadwick wrote:
> On Mon, Apr 07, 2008 at 07:17:29PM -0400, Elliott Perrin wrote:
> > On Mon, 2008-04-07 at 16:07 -0700, Jeremy Chadwick wrote:
> > > On Mon, Apr 07, 2008 at 11:02:33PM +0100, Torsten @ CNC-LONDON wrote:
> > > > I'm running FreeBSD stable6.2  on all my servers and in the past one year I
> > > > notices a random disconnection of persistent sessions to and from servers
> > > > with  is running as PF the firewall
> > > 
> > > The big problem with your rules looks to be how you're determining SYN,
> > > and how you're using keep state.
> > > 
> > > Below are some comments.
> > > 
> > > >         SYN_ONLY="S/FSRA"
> > > 
> > > This is very, very wrong, and probably the cause of your issues.  This
> > > should be S/SA.
> > 
> > That is not very very wrong. 
> > 
> > Any TCP session starting up should only have the SYN flag set out of SYN
> > FIN ACK RST. As a matter of fact this is in theory a more secure setting
> > than S/SA (SYN out of SYN ACK). 
> 
> You're correct, and it was I who was very wrong.  :-)  Thank you for
> correcting me.

No apology necessary... especially with all the help you provide to
people on the list. 

Cheers,
~e