ConfigServer Services Blog

New csf v3.01

Changes:

  • Tightened DNS port configuration restrictions as the old rules were being catered for by iptables connection
  • Added Kerio Mailserver POP3/IMAP regex’s

New MailScanner Script v2.62

Changes:

  • Optimised perl module list requirements
  • Added common LWP procedure which provides progress reporting for downloads
  • New Mailscanner v4.66.5:http://www.mailscanner.info/ChangeLog

PHP v4 – R.I.P

A reminder that support for PHP v4 was dropped by the PHP developers at the end of last year. For security and stability (yeah, right) reasons, you should be moving over to PHP v5 exclusively ASAP:http://php.net/#2007-07-13-1

New csf v3.00

Changes:

  • Added progress information to LWP downloads within csf
  • Added numiptent checking for VPS servers. csf will flush iptables and lfd will stop blocking IP’s if numiptent is nearly depleted. This should help prevent VPS lockouts due to insufficient server resources. If this happens, you will either need to reduce the number of iptables rules (e.g. disable Block List usage) or have the VPS provider increase numiptent. A value of ~700-1000 should be fine for most SPI firewall applications with full Block List configuration
  • Added support for the BOGON List (Block List) with LF_BOGON – http://www.cymru.com/Bogons/ See link and csf.conf for more information
  • Enhanced the cpanel.net lookup for httpdupdate.cpanel.net to workaround the lack of rDNS PTR records
  • Fixed problem with RELAYHOSTS not working
  • Removed use of the replace binary

New MailScanner Front-End (MSFE) v4.19

We’ve released a new version of MSFE that will upgrade ClamAV and configure and install the clamd ClamAV Daemon process. The procedure will also reconfigure MailScanner to use clamd instead of the Mail::ClamAV perl module which will now no longer be required.We’ve made these changes for two reasons:1. It separates the dependency we’ve had on Mail::ClamAV keeping up with ClamAV developments. The current problem of incompatibility between v0.20 of Mail::ClamAV and ClamAV v0.92 has happened before and held back the upgrade to the latest version of ClamAV2. There is an added benefit that we’ve discovered where this change reduces each MailScanner child processes memory footprint by ~32MB. The clamd process uses around the same amount of memory, but there’s only a need for a single process. So, the saving on the typical system that runs 3 MailScanner children is ~64MBYou will notice that if you attempt to upgrade ClamAV through MSFE before upgrading MSFE itself, you’ll receive an error instructing you yo upgrade MSFE first.

Mrtg error after OS vendor update

If you’re seeing the following error after your OS updates mrtg if we’ve installed mrtg graphs for you:

ERROR: I Quit! Another copy of mrtg seems to be running. Check /etc/mrtg/mrtg.pid Daemonizing MRTG …

Simply do the following:

rm -fv /etc/cron.d/mrtg/etc/init.d/mrtg restart

You can ignore any subsequent mrtg errors referring to ETH1.

Warning: Latest ClamAV v0.92

The latest version of ClamAV just released (v0.92) is incompatible with the current latest version of the Mail::ClamAV module (v0.20), so you should not upgrade to ClamAV v0.92 until the Mail::ClamAV developer updates their code. This affects anyone using the ClamAV Module in MailScanner. For the time being, you should stay on/install only ClamAV 0.91.2

New csf v2.95

Changes:

  • Reduced memory overhead and added large file skipping for LF_DIRWATCH
  • Improved performance of LF_DRIWATCH trigger checks
  • Fixed problem with LF_SELECT temporarily blocking outbound access on all ports. Now now only the relevant inbound only port(s) will be blocked if triggered

cPanel Dictionary Attack option

In CURRENT and EDGE releases of cPanel (v18335) cPanel have added their own Dictionary Attack ACL to exim. We would encourage users to use this new feature in preference to our long standing Dictionary Attack ACL.The cPanel version takes advantage of the new exim ratelimit feature and means that exim does not have to resort to running a perl script and storing IP addresses in a file. This ought to have less performance impact on exim.The cPanel ACL will block SMTP connection attempts after 5 consecutive failures rather than the 4 that we configured in ours. It maintains the block for one hour. cPanel also have a whitelist for IP’s.