Linux firewall restrictions specify that port can only be visited by designated IP

Requires a limit on the Redis ports, allowing only machine access to designated IP within the company

-A input-m state--state new-m tcp-p TCP--dport 22-j accept-a input-m State--state new-m tcp-p TCP--dport 80-j ACCEPT-A INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT-A INPUT -m state --state NEW -m tcp -p tcp --dpor T 443-j accept-a input-s 111.111.111.111-p tcp--dport 6379-j accept-a output-d 111.111.111.111-p TCP--sport 6379 -j ACCEPT

Note that the--dport is the destination port when the data enters the server from the outside to the destination port.

Instead. Data from the server is the data source port, using--sport

Similarly,-S is the specified source address, and-D is the specified destination address.

Linux firewall restrictions specify that port can only be visited by designated IP