CENTOS7 View Port command

# NETSTAT-LNTP #查看监听 (Listen) port
# NETSTAT-ANTP #查看所有建立的TCP连接
Other about View server Network Information command:
1. View the Linux system hostname: Linux learning,/HTTP/linux.it.net.cn
    # hostname
    Localhost.localdomain
2. View server IP Address:
    # ifconfig|grep ' inet addr: ' |grep-v ' 127.0.0.1 ' |cut-d:-f2|awk ' {print '} '
    192.168.17.238
    192.168.1.9
3. View the Linux gateway:
    # route |grep Default
    Default 192.168.1.1 0.0.0.0 UG 0 0 0 em1
4. View Linux Open service:
    # chkconfig--list|grep Enable #查看开启的服务
    sshd 0: Off 1: Off 2: Enable 3: Enable 4: Enable 5: Enable 6: Off
    httpd 0: Off 1: Off 2: Off 3: Enabled 4: Off 5: off 6: Off
5. View Server DNS configuration:
    # cat/etc/resolv.conf
    NameServer 192.168.0.66
    NameServer 202.106.0.20
6. Other Network information:
    # iptables-l #查看防火墙规则
    # route-n #查看路由表
    # netstat-s #查看网络统计信息

CENTOS7 View Port command