[ubuntu-uk] OT: Debian apache2 problem

Jake Bunce jakebunce at googlemail.com
Fri Sep 12 18:40:11 BST 2008

Are you using static NAT, i.e 1-1, - or whatever
your internal IP is and can it handle the amount of translations its
performing? Also if you're behind a shared firewall, can it handle the
amount of traffic passing through it? Check your firewall/iptables logs
where connections are initialized, but not followed through - TCP SYN
messages from different hosts but no SYN/ACK - SYN. Could indicate a DDoS
attack. I had no trouble viewing your site though.


2008/9/12 Johnathon Tinsley <kirrus at kirrus.co.uk>

> Hash: SHA1
> Hello all,
> Slightly off topic.. I'm working on a debian server, which is currently
> hosting my blog: kirrus.co.uk
> Unfortunately, something appears to be screwy with apache2 or something
> - - connections aren't being closed, and are just backing up.
> You can see this in action, if you visit the blog. Sometimes it just
> doesn't hand you all the data, and firefox sits waiting for data from
> "kirrus.co.uk".
> Apache just spawns server processes, till the RAM runs out. Then the
> kernel starts killing processes and it doesn't appear to kill the
> logical choice of apache2.
> I've tried pinging one of the other servers in the network, to see if
> its obviously a network problem. Out of over 20,000 pings, only 4
> weren't replied to. Is there any better way to check the network
> infrastructure?
> Anyone have any other ideas of things to try?
> Johnathon
> Version: GnuPG v1.4.6 (GNU/Linux)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
> iD8DBQFIyqcE81bUwCB/xdgRAnFgAJoCJdthupjdFgCvUqQ5MO8w0l7SNACfWcAV
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