How to check open ports on Linux

Answered
Jan 05, 2026 232 views 1 answers
27

How can I see which ports are open and listening on my server?

S
Asked by sysadmin
Silver 222 rep

1 Answer

29
# Using netstat
sudo netstat -tlnp

# Using ss (modern)
sudo ss -tlnp

# Using nmap
nmap -sT -O localhost

# Check specific port
sudo lsof -i :80
D
Answered by devops_guru 1 week, 2 days ago
Gold 290 rep

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