On Wed, Nov 9, 2022 at 8:15 AM Simon Matter <simon.mat...@invoca.ch> wrote:
>
> > The Fortinet admin has set the following in his FW:
> >
> >             set protocol 6
> >             set timeout 28800
>               ^^^^^^^^^^^^^^^^^
> What's this value exactly?

I don't have access to a Fortinet Fortigate system right now (and I'm
not the admin of the remote system anyway), but it seems to be a
"session timeout" as Fortinet seems to treat every connection as a
"session".
If that were true I guess it might be the equivalent of
net.netfilter.nf_conntrack_tcp_timeout_established which in my case is
86400.
If that really were it  then I wouldn't have to change anything.
The thing is that Fortinet seems to be able to apply a specific
timeout to a type of connection -- in this case any connection to port
tcp 1521 -- while net.netfilter.nf_conntrack_tcp_timeout_established
is system-wide.

Or maybe Fortinet's "timeout" refers to something else.

> Timeout can mean a lot. Could it be that the FW is doing some NAT and this
> is the connection tracking timeout?

I do not have that info.

> Do you actually see any issues with these connections? Or do you just want
> to have a matching configuration?

Both.
The user has an application which connects to a remote Oracle DB. At
some point after x minutes idle the client software fails and
complains about a connection error. I've been told that it's because
of a timeout at FW level even though I'm guessing this wouldn't happen
if the software and/or client/server OS were properly configured with
keepalive connections.

I'll try to get more info from Fortinet.

Thanks


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