Re: TCP Window Scaling issue

[Michael Brown <michael () supermathie net>]

On 14-07-24 12:25 PM, Tony Finch wrote:
> Zach Hill <zach.reborn () gmail com> wrote:
>
> > What's interesting is this is only affecting a single server and only
> > when traffic is going over the WAN circuit. Testing from Server A to any
> > server on it's network shows it is negotiating window scaling just fine.
> Check your firewall isn't buggering about with TCP options.
>
> Tony.
This, exactly. I diagnosed this issue a while back with our Checkpoint
firewall - it didn't understand TCP window scaling so it would blindly
zero out the field and cause nightmares.

M.

-- 
Michael Brown            | The true sysadmin does not adjust his behaviour
Systems Administrator    | to fit the machine.  He adjusts the machine
michael () supermathie net  | until it behaves properly.  With a hammer,
                         | if necessary.  - Brian