2. How to find out which ports are open in Linux? / Ports / Linux / Netstat / ss / lsof / Nmap
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How to find out which ports are open in Linux? / Ports / Linux / Netstat / ss / lsof / Nmap
1. Netstat
sudo apt install net-tools
sudo netstat -ltupan
sudo netstat -lntup | grep "ssh"
sudo netstat -lntup | grep ":80"
2. ss
sudo ss -lntu
3. Nmap
sudo apt install nmap
sudo nmap n -PN -sT -sU -p YourIP
4. lsof
sudo lsof -i
sudo lsof -i :80
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