Is there a way I can allow a range of ports to only be used by one IP address but one? Thanks.
Precisely, I want to restrict range 6011-6099 excluding 6012. The rule to restrict the range 6011-6099 is already in place.
Oh, it's worth mentioning that I'm using IPTables as the firewall. (lawl)
Yes.
iptables -A INPUT-p tcp --dport 6012 -j DROP
Add this first to block any traffic to port 6012.
iptables -A INPUT -p tcp -s 10.10.10.10 --match multiport --dport 6011:6099 -j ACCEPT
where 10.10.10.10 is the source IP. This tells the system to let input coming from 10.10.10.10 destined for any port 6011-6099 through.
