ristrict access zimbra server outside network !

[uscell]

Hello,

is there any way to stop users using zimbra server outside network,

our company want to stop zimbra server access outside for employee.
generally employee can open zimbra mail from cyber cafe and we want to ristrict it.

kindly help.

let me know if any thing we can mark or ristrict user for outside access like webmail.pop3 or imap.

thanks,
yukari !!!

[phoenix]

Disable access to the webmail port at your firewall.

[adobrin]

if you have one interface (replace eth0 with it) for both LAN and internet.

iptables -A INPUT -i eth0 -p tcp --dport 80 -j DENY
iptables -A INPUT -i eth0 -s 192.168.2.0/24 -p tcp --dport 80 -J ACCEPT

(repeat for 443)