What ports do I need to open in my firewall?

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What ports do I need to open in my firewall?Last Modified: Aug 24, 2017, 3:38 pm
20,21:  FTP.  Note that ftp will use a "random high port number" if the client is in PORT mode, so you may need to add a port range into your /etc/proftpd.conf file to allow ftp connections, eg:

PassivePorts 35000 35999

and then open that port range as well in your firewall.

22:  ssh access

25, 587: smtp for exim to recieve email

53: dns (named), so your sites resolve.  TCP and UDP here.

80, 443: apache traffic, http and https

110, 995: client pop email access
143, 993: clients imap email access

2222: DirectAdmin Access

2703: Optional: RAZOR check for SpamAssassin

3306:  mysql acess.  You don't need to open this port if you don't want to allow remote mysql access, as most mysql scripts are all accessed locally.
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