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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 …

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

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?

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 …

What you've been told is right, although you've written it wrong (you've forgotten --dport). iptables -A INPUT -p tcp --dport 1000:2000 will open up inbound traffic to TCP ports 1000 to 2000 inclusive. -m …

Jan 11, 2023 · At first glance you're only allowing DNS responses to be received and don't create any DNS related rules in the OUTPUT chain to actually allow sending DNS queries out. You current …

May 5, 2023 · Attempting to add the ip rule add for UDP because the system is hosting a webserver which uses UDP for downloading content it seems. ip rule add from 0.0.0.0/32 ipproto udp sport …

Jan 25, 2024 · So I have a quick and dirty firewall that I plan to use on my vps using nftables. Here's the initial rule table inet filter { chain input { type filter hook input priority 0; #