@zwh8800
2017-08-23T10:20:12.000000Z
字数 1307
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关于 netstat 和 iptables 的用法
sudo netstat -tnlpu | grep pptpd
显示程序名和端口号
-t :显示tcp
-u :显示udp
-n :不反向解析ip
-l :显示监听套接字
-p :显示程序名(需root)
完整用法:
usage: netstat [-vWeenNcCF] [] -r netstat {-V|–version|-h|–help}
netstat [-vWnNcaeol] [ …] netstat { [-vWeenNac] -i | [-cWnNe]
-M | -s }-r, –route display routing table
-i, –interfaces display interface table
-g, –groups display multicast group memberships
-s, –statistics display networking statistics (like SNMP)
-M, –masquerade display masqueraded connections-v, –verbose be verbose
-W, –wide don’t truncate IP addresses
-n, –numeric don’t resolve names –numeric-hosts don’t resolve host names –numeric-ports don’t resolve port names –numeric-users don’t
resolve user names
-N, –symbolic resolve hardware names
-e, –extend display other/more information
-p, –programs display PID/Program name for sockets
-c, –continuous continuous listing-l, –listening display listening server sockets
-a, –all, –listening display all sockets (default: connected)
-o, –timers display timers
-F, –fib display Forwarding Information Base (default)
-C, –cache display routing cache instead of FIB={-t|–tcp} {-u|–udp} {-w|–raw} {-x|–unix} –ax25 –ipx –netrom
=Use ‘-6|-4’ or ‘-A ’ or ‘–’; default: inet List of
possible address families (which support routing): inet (DARPA
Internet) inet6 (IPv6) ax25 (AMPR AX.25) netrom (AMPR NET/ROM) ipx
(Novell IPX) ddp (Appletalk DDP) x25 (CCITT X.25)
sudo iptables -t nat -A POSTROUTING -s 192.168.0.1/24 -o eth0 -j MASQUERADE
开启nat
具体见这里