specific port with ipables ? i couldnt find any solution in google :(
https://unix.stackexchange.com/questions/11851/iptables-allow-certain-ips-and-block-all-other-connection This should solve it?
They want to allow max 2 IPs to talk to the server at a time. This can work but we don't know how _often_ the 2 IP address in this case will change.
Then the issue it's a bit different That iptable rule needs to be changed(the old IPs to be blocked, the new IPs to be allowed) programmatically when IPs change So, the machine in charge of doing this all must be able to determine" when the IPs are changed" and also "what are they now"
no cuz we dont have static ips. what firewall can do it ? except iptables
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