linux如何查看正在使用的端口
# Any of the following
sudo lsof -i -P -n | grep LISTEN
sudo netstat -tulpn | grep LISTEN
sudo lsof -i:22 # see a specific port such as 22
sudo nmap -sTU -O IP-address-Here
如何检查linux中打开的端口列表
sudo lsof -i -P -n | grep LISTEN
sudo netstat -tulpn | grep LISTEN
sudo lsof -i:22 # see a specific port such as 22
sudo nmap -sTU -O IP-address-Here
看看什么是使用端口ubuntu
$ sudo lsof -i:22
检查哪些端口是开放的linux
## if you use linux
sudo ss -tulw
运行端口ubuntu的列表
sudo lsof -i -P -n | grep LISTEN
ubuntu打开所有端口
sudo ufw allow 1:9999/tcp