[ClearOS_6] Make ldap service listen to all IP

In ClearOS We can set Ldap service listen to all interface by setting Publish Policy option to All Networks, but maybe for security concern the service was not for ldap but ldaps (SSL ldap protocol) which listen in port 636.

Because there is an application that will be using ClearOS ldap as authentication backend cannot using ldaps (as it’s been hardcoded from  vendor) so we need to force ldap (port 389) service to listen in all IP.

So here’s the steps.

  • Edit init service for slapd
vi /etc/init.d/slapd
  • Go to line number 72 then add following lines.
for ip in $AUTOMAGIC_LANIPS; do
      harg="$harg ldap://$ip"
done
  • Save and exit, then restart slapd service to apply the changes
service slapd restart
  • Make sure the modified file will not replaced if there is update for package openldap-servers (do as your own risk)
vi /etc/yum.conf
  • Under section [main] add following line
exclude=openldap-servers
  • make sure ldap service port are listening to all available IP.
netstat -tnap | grep LISTEN | grep 389

 

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Enhance ClearOS 6 Password Policy

Background

Our customer using ClearOS 6 (professional edition) to store user password and almost all applications using it as external authentication so user only has to remember one password and Zimbra is one of the application.

Recently the public IP that used as mail outgoing traffic being listed in RBL and by our check in server we found there are some user account has been hijacked so it’s sending spam email to outside domain (gmail.com, outlook.com, etc) then i set suspected status to close in zimbra also reset it’s password randomly  but it’s happen quite frequently.

Then i created simple php script using clearOS API to scan weak password (based on list), surprisingly there are bunch of user using weak password such as “Passwd11”, “Paasword88”, etc. so i conclude the builtin password policy in ClearOS is not good enough to prevent it.

Solution

Based on my experience create and modifying ClearOS module (as it’s just a PHP code) i modified ClearOS user module. to increase password policy by following criteria:

  • Maximum length
  • Minimum length
  • Minimum uppercase
  • Minimum numeric character
  • Minimum punctuation character
  • Forbid user to use username within password
  • Forbid user to use password that listed in weak password list.

Continue reading “Enhance ClearOS 6 Password Policy”