查看路由表（等同于route命令）
[root@oracle ~]# netstat -r
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt
Iface
192.168.1.250 * 255.255.255.255 UH 0 0 0
eth0
192.168.2.0 * 255.255.255.0 U 0 0 0
eth0
link-local * 255.255.0.0 U 0 0 0
eth0
default 192.168.1.250 0.0.0.0 UG 0 0 0
eth0
查看接口状态
[root@oracle ~]# netstat -I
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP
TX-OVR Flg
eth0 1500 0 28458 0 0 0 2097 0 0
0 BMRU
lo 16436 0 4 0 0 0 4 0 0
0 LRU
查看TCP监听
[root@oracle ~]# netstat -lt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address
State
tcp 0 0 *:amqp *:*
LISTEN
tcp 0 0 *:sunrpc *:*
LISTEN
tcp 0 0 *:ssh *:*
LISTEN
tcp 0 0 localhost:ipp *:*
LISTEN
tcp 0 0 localhost:smtp *:*
LISTEN
tcp 0 0 *:25501 *:*
LISTEN
tcp 0 0 *:amqp *:*
LISTEN
tcp 0 0 *:26509 *:*
LISTEN
tcp 0 0 *:sunrpc *:*
LISTEN
tcp 0 0 *:ssh *:*
LISTEN
tcp 0 0 localhost:ipp *:*
LISTEN
tcp 0 0 localhost:smtp *:*
LISTEN
查看UDP监听
[root@oracle ~]# netstat -lu
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address
State
udp 0 0 *:mdns *:*
udp 0 0 *:sunrpc *:*
udp 0 0 *:ipp *:*
udp 0 0 *:768 *:*
udp 0 0 *:48641 *:*
udp 0 0 *:904 *:*
udp 0 0 *:27576 *:*
udp 0 0 *:43629 *:*
udp 0 0 *:sunrpc *:*
udp 0 0 *:768 *:*
[root@oracle ~]#
查看UDP监听并以数字显示服务端口
[root@oracle ~]# netstat -lun
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address
State
udp 0 0 0.0.0.0:5353 0.0.0.0:*
udp 0 0 0.0.0.0:111 0.0.0.0:*
udp 0 0 0.0.0.0:631 0.0.0.0:*
udp 0 0 0.0.0.0:768 0.0.0.0:*
udp 0 0 0.0.0.0:48641 0.0.0.0:*
udp 0 0 0.0.0.0:904 0.0.0.0:*
udp 0 0 0.0.0.0:27576 0.0.0.0:*
udp 0 0 :::43629 :::*
udp 0 0 :::111 :::*
udp 0 0 :::768 :::*
[root@oracle ~]#