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linux - iptables error: unknown option --dport - Server Fault
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 …
What port should I open to allow remote desktop? - Server Fault
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 …
Drop ALL the TCP connections (ESTABLISHED,RELATED) in Ubuntu
Apr 8, 2023 · It is unknown what exactly your "webserver" is, but in case of Apache see Restart Apache and Kill All Sub Processes to make sure that established connections get closed too.
linux - How can I port forward with iptables? - Server Fault
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?
iptables - How to open port 8080? - Server Fault
Jun 28, 2017 · You should change in your rules from -A OUTPUT -p tcp -m tcp --dport 8080 -m state --state NEW,ESTABLISHED -j ACCEPT to -A OUTPUT -p tcp -m tcp --sport 8080 -m state --state …
tc - How to match port range using u32 filter - Server Fault
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 ?
Route all traffic through Wireguard peer - Server Fault
Aug 16, 2021 · I'm unable to comment due to too-low reputation, but I came across this post when trying to accomplish a similar goal. It's not entirely clear if the OP would prefer to keep local traffic local (i.e. …
What to check if 'pinging' doesn't work? - Server Fault
Jun 3, 2009 · What would be the preliminary checks that should be carried out if a server cannot 'ping'?
linux - Iptables: "-p udp --state ESTABLISHED" - Server Fault
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