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First give a -p option like -p tcp or -p udp. Examples: iptables -A INPUT -p tcp --dport 22 -m state --state NEW -j DROP iptables -A INPUT -p udp --dport 53 --sport 1024:65535 -j ACCEPT You could also try …

Apr 8, 2023 · Also mind the spaces between parenthesis): ss --kill -tn 'dst == 192.0.2.2 and ( sport == 80 or sport == 443 )' (or just the destination, it's about an attacker anyway). Unlike tcpkill this doesn't …

Dec 4, 2015 · @BrianZ This is Windows 7/8/10 and to get there, just open Start Menu search for "Firewall" and click on "Advanced Settings" on the left-side panel, click on Inbound Rules on left-side …

How about this: I'm a programmer trying to set up an environment so I can debug my server application in eclipse being called from the innernet. Close enough?

Jun 28, 2017 · -A OUTPUT -p tcp -m tcp --sport 8080 -m state --state NEW,ESTABLISHED -j ACCEPT Because your OUTPUT rules block output packets to non-allowed ports, it's allow only access to port …

Feb 6, 2011 · with "u32 match ip sport 80" in Linux tc I can match port 80, but how can I match a port range 10000 - 20000 ?

let's look at these two iptables rules which are often used to allow outgoing DNS: iptables -A OUTPUT -p udp --sport 1024:65535 --dport 53 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A

A rule could look like iptables -t nat -A OUTPUT -p tcp --sport 80 -j SNAT --to-source 192.168.12.87 Each of those three solutions have drawbacks, so you need to carefully consider, if you really need …

I have a Linux machine and a Windows machine behind a router that implements NAT (the diagram might be overkill, but was fun to make): I am forwarding RDP port (3389) on the router to the Linux …