New csf v1.33

The latest release of csf is now available for upgrade within WHM with the following changes:

  • Added blocking of SSL POP3 and IMAP ports to LT (993/995)
  • Added option to Restart csf+lfd within WHM interface when appropriate
  • Added buttons to WHM interface to remove APF or BFD if still installed
  • Removed csf nat and mangle chain actions

New csf v1.32

Another release which addresses:

Modified log line checking to deal with syslog compression. This iswhere syslog will add a line “last message repeated X times” if thenext line it were to add is identical to the last. This could lead tologin attempts being missed. But no more – lfd now checks for thatline and repeats the processing of the previous log line X times tocount all the login failures

Upgrade via WHM or read upgrade.txt in the tarball.

New csf v1.3

Can’t keep a good programmer down ;)Some nice new features and some speedups in this latest release:

  • Fixed a problem with the tick time in the alert report
  • Changed the way allow and deny IP addresses are inserted into iptables so that using the command line -a or -d doesn’t require a firewall restart
  • csf -l now shows iptables line numbers
  • Added login tracking (LT) options to keep track of POP3 and IMAP logins and limit them to X connections per hour per account per IP address. Uses iptables to block offenders to the appropriate protocol port only and flushes them every hour. All of these blocks are temporary and can be cleared by restarting csf

If you upgraded to v1.2 you should be able to upgrade now from within WHM, otherwise follow the upgrade.txt file in the tarball.

New csf v1.1

Thanks to popular demand, I’ve added a new feature to csf:


ConfigServer Firewall and Login Failure Daemon Beta

Well, it’s here in beta form. If you would like to try out our new firewall application then please drop me an email at and I’ll send you the tarball.We have done a lot of work making sure that the firewall won’t lock you out (it flushes the tables on error) when starting, including a crontab entry to flush iptables.Note: You need to be running a RedHat or derivative OS. That is, RH9, RHE3/4, CentOS3/4, Fedora Core 1/2/3/4/5

ConfigServer Firewall and Login Failure Daemon

We’ve been working on developing our own iptables firewall, login failure daemon and WHM front-end. The idea is to provide a complete, straight-forward, easy to configure and maintain, solution. There are, of course, other products available that can provide you with this functionality. However, in our experience over the years, we’ve found them lacking in some fundamental aspects. We’re trying to address those with our new development.It’s likely to stay in beta-testing for some time (once we have that available) to ensure that it is robust as possible.For now, the product will be Linux only (possible RH and derivatives only) and we are as yet undecided on the license we will distribute the product under and how that distribution is done. It will also be exclusively for cPanel servers, certainly initially.We’re hoping to have this working on VPS servers, but it depends a lot on your VPS provider and their willingness/ability to provide the correct iptables modules in their kernels.More details will follow in due course, including a call for brave beta-testers ;)Visit the products page on our site here.

HTML Mail Bug in MailScanner v4.53.8

There’s a bug in the MailScanner code where if you have it configued to scan HTML email for dangerous content it actually strips out link text and images. To correct this, you can either:

  • wait until the next release from MailScanner
  • install the latest beta release by modifying to use the URL to the distribution on the site
  • apply the following patch…

You need to replace the file in /usr/mailscanner/lib/MailScanner/ :

cd /usr/mailscanner/lib/MailScanner/wget 755 Message.pmservice MailScanner restart

We are taking a short break and will close the store, helpdesk and email from Wednesday, 30 November through Tuesday, 6 December 2022.

If you purchase a license or Service Package before the closing date and require installation, please be sure to leave at least 24 hours before then for the work to be done. Otherwise, any work will be scheduled for after this period. We will reopen on Wednesday, 7 December 2022.