I am using zcs 5.0.5 MTA.
My ZIMBRA Server is totally visible for public. Now,I want to put a security into ZIMBRA Server & i want to implement "iptables" security on my ZIMBRA Server.
So, By implementing iptables security,will it make any problems for ZIMBRA?
Some iptables security steps are given below. Please guide me.
INPUT block ports :- 20,21,22,23,25,3128,5280
3128 :- Squid Proxy Server.
5280 :- Jabber Chat Server.
25 :- SMTP.SMTP is only responsible for sending mails.So,can we block for incomming INPUT script?
Could you please suggest any open source software firewall,that can be installed onto ZIMBRA machine itself?
Can we run Squid Proxy & Jabber Chat server onto ZIMBRA Mail Server?
I am asking you about Squid Proxy bcoz I have limited servers here & My Squid proxy is already running on another server.I just need to confirm that If my existing squid proxy fails,can we transfer all internet data through ZIMBRA,if it is installed Squid?
Is it possible to put my Zimbra Mail server behind NAT Server? If Yes,then How it will become visible from outsiders?