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Special Forums IP Networking Proxy Server IPtable rules for DNS/http/https traffic for specific hosts only, not working. Post 302899546 by phi0x on Tuesday 29th of April 2014 07:32:13 PM
Old 04-29-2014
yesterday the vps got taken down again due to too many conntrack connections they said again.

I am not sure what logs to look at but when I do netstat -ntulp it shows very few connections when they bring the vps back online. I've monitored all day checking a few times every hour to see how the netstat and the /proc/net/nf_conntrack log shows. Doesn't seem like a crazy amount of connections are being produced. I'd say no more than 1-50 connections, average around 10. Mostly opened connections from dns/proxy from a few of the ip's I have allowed in.

This is no where close to their 25-30k conntrack limit.

Today the server hasn't gone down, the iptable rules are automatically applied upon boot. Shall continue to monitor..
 

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IMAPPROXYD(8)							 IMAP proxy daemon						     IMAPPROXYD(8)

NAME
imapproxyd - IMAP proxy daemon SYNOPSIS
imapproxyd [ -f <config file name> ] [ -p <pidfile name> ] DESCRIPTION
This manual page documents briefly the imapproxyd command. This manual page was written for the Debian distribution because the original program does not have a manual page. UP-ImapProxy proxies IMAP transactions between an IMAP client and an IMAP server. The general idea is that the client should never know that it is not talking to the real IMAP server, but ImapProxy caches server connections. ImapProxy was written to compensate for webmail clients that are unable to maintain persistent connections to an IMAP server. Most webmail clients need to log in to an IMAP server for nearly every single transaction; This behaviour can cause tragic performance problems on the IMAP server. ImapProxy tries to deal with this problem by leaving server connections open for a short time after a webmail client logs out. When the webmail client connects again, ImapProxy will determine if there is a cached connection available and reuse it if possible. FILES
By default, UP-ImapProxy reads /etc/imapproxy.conf on startup. This can be changed by using the -f option Unless foreground_mode has been enabled, UP-ImapProxy will write its PID to to a PID-file. It defaults to /var/run/imapproxy.pid, but can be overridden with the -p option SEE ALSO
pimpstat(8), AUTHOR
This manual page was written by Jose Luis Tallon <jltallon@adv-solutions.net>, for the Debian GNU/Linux system (but may be used by others). Dave McMurtrie Mar 12, 2004 IMAPPROXYD(8)
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