Re: Internet slow down related to the firewall

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On 14/08/07, Tim <ignored_mailbox@xxxxxxxxxxxx> wrote:
> On Sun, 2007-08-12 at 19:06 -0700, Les wrote:
> > I looked at the gui, and the tables, at the files you guys suggested,
> > and looked at some files and stuff on the internet, but nothing seems
> > to quite apply to this case.  I'm truly puzzled.  Who does the support
> > for the firewall?  I don't see a name associated with the firewall.
> > Maybe it is time for a bug report?
>
> You'd want to determine whether it's an iptables fault, or whether the
> firewall configurator produces some rules which are a bad idea.  There's
> probably a little of both, but I'd suspect that the rules are probably
> not as well thought out as they should be.  The current trends in
> firewall rule generation (drop/ignore rather than reject) does go
> against the way networking works, and is known to cause problems in some
> arenas.
>

Another thing you might try is this:

echo 1 > /proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_be_liberal

With FC-6 and F-7, one of my boxes was having really slow and stalled
file transfers. Turns out that this is because of a bad
firewall/router somewhere on the network which is sending out-of-frame
packets. Setting the above fixes the problem. It;'s an easy thing to
try.

J


> --
> (This box runs FC5, my others run FC4 & FC6, in case that's
>  important to the thread.)
>
> Don't send private replies to my address, the mailbox is ignored.
> I read messages from the public lists.
>
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