The IP Packet Filter is useful in the following situations:
If you're experiencing SSH brute force login attacks, HeatShield can block those attacks. HeatShield makes it easy to see all SSH brute force blocks across all of your servers through one interface. You can also globally whitelist IP addresses through HeatShield so trusted addresses will never be blocked by the SSH brute force blocker due to failed SSH login attempts.
HeatShield's free SSH brute force blocking includes standard IP Packet Filter rules to allow the following traffic: port 22 (SSH), port 80 (HTTP), and port HTTPS (443).
If you need to customize the IP Packet Filter rules, this can be done as an addon that costs $10/month per server.
