There are many security practices for your private cloud hosting. VPS users looking for enhanced security can upgrade Advanced Policy Firewall (APF) to ConfigServer Security & Firewall (CSF). Below we cover how to block VPS ports using CSF.Temporary Permanent
Note: You’ll need to log into WHM as root and select ConfigServer Security & Firewall. APF users can upgrade if desired.
Temporarily Block Access to a Port
- Under csf – ConfigServer Firewall, specify the IP address, port(s), and number of seconds, minutes, hours, or days.
- Press Temporary Allow/Deny.
Specify Open & Closed Ports
- Under csf – ConfigServer Firewall, select Firewall Configuration.
- Add or remove ports listed in the following sections:
IPv4 Port Settings – TCP_IN, TCP_OUT, UDP_IN, UDP_OUT
IPv6 Port Settings – TCP6_IN, TCP6_OUT, UDP_IN, UDP_OUT
- Press Change at the bottom, then Restart csf+lfd. Press Return at the bottom.
Further improve your VPS security by scheduling email blacklist reports and configuring cPHulk.
After configuring your firewall, audit your open ports.