Linux Command netstat
Linux perintah netstat menampilkan status jaringan.
Gunakan perintah netstat memungkinkan Anda tahu jaringan seluruh sistem Linux.
tatabahasa
netstat [-acCeFghilMnNoprstuvVwx][-A<网络类型>][--ip]
Parameter Deskripsi:
- -a atau --all Tampilkan semua koneksi di Socket.
- -A <Jenis jaringan> atau - <jenis jaringan> daftar jenis koneksi jaringan ke alamat yang relevan.
- -c atau --continuous berkelanjutan status jaringan yang terdaftar.
- -C Atau --cache tampilan cache konfigurasi informasi router.
- jaringan menampilkan -e atau --extend informasi terkait lainnya.
- -F Atau --fib display FIB.
- -g atau --groups menampilkan fungsi broadcast daftar anggota grup beberapa.
- h atau bantuan online --help.
- jaringan display formulir informasi antarmuka -i atau --interfaces.
- l atau --listening Pemantauan display Server Socket.
- -M Atau --masquerade koneksi jaringan berjubah.
- -n atau --numeric langsung menggunakan alamat IP bukan dengan nama domain server yang.
- N Atau --netlink atau display simbol jaringan --symbolic nama koneksi perangkat hardware.
- -o atau display waktu --timers.
- p atau display --programs digunakan Socket Program pengenal dan nama program.
- r atau --route tampilan Routing Table.
- -s atau tampilan --statistice tabel informasi jaringan.
- t atau --tcp koneksi display transportasi Status protokol TCP.
- u atau koneksi display protokol transport Status UDP --udp.
- v atau layar --verbose selama pelaksanaan instruksi.
- -V Atau --version informasi versi layar.
- -w atau tampilan --raw status koneksi protokol transport RAW.
- -x atau efek dari parameter ini dan menentukan yang sama "-A unix" parameter --unix.
- --ip atau efek --inet parameter ini dan menentukan "inet -A" parameter yang sama.
contoh
Menunjukkan status jaringan rinci
# netstat -a
Menampilkan pendaftaran rumah tangga status koneksi UDP saat ini
# netstat -nu
Menampilkan penggunaan nomor port UDP
# netstat -apu Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name udp 0 0 *:32768 *:* - udp 0 0 *:nfs *:* - udp 0 0 *:641 *:* 3006/rpc.statd udp 0 0 192.168.0.3:netbios-ns *:* 3537/nmbd udp 0 0 *:netbios-ns *:* 3537/nmbd udp 0 0 192.168.0.3:netbios-dgm *:* 3537/nmbd udp 0 0 *:netbios-dgm *:* 3537/nmbd udp 0 0 *:tftp *:* 3346/xinetd udp 0 0 *:999 *:* 3366/rpc.rquotad udp 0 0 *:sunrpc *:* 2986/portmap udp 0 0 *:ipp *:* 6938/cupsd udp 0 0 *:1022 *:* 3392/rpc.mountd udp 0 0 *:638 *:* 3006/rpc.statd
daftar kartu layar
# 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 181864 0 0 0 141278 0 0 0 BMRU lo 16436 0 3362 0 0 0 3362 0 0 0 LRU
Hubungan kelompok display multicast
# netstat -g IPv6/IPv4 Group Memberships Interface RefCnt Group --------------- ------ --------------------- lo 1 ALL-SYSTEMS.MCAST.NET eth0 1 ALL-SYSTEMS.MCAST.NET lo 1 ff02::1 eth0 1 ff02::1:ff0a:b0c eth0 1 ff02::1
Tampilan Statistik Jaringan
# netstat -s Ip: 184695 total packets received 0 forwarded 0 incoming packets discarded 184687 incoming packets delivered 143917 requests sent out 32 outgoing packets dropped 30 dropped because of missing route Icmp: 676 ICMP messages received 5 input ICMP message failed. ICMP input histogram: destination unreachable: 44 echo requests: 287 echo replies: 345 304 ICMP messages sent 0 ICMP messages failed ICMP output histogram: destination unreachable: 17 echo replies: 287 Tcp: 473 active connections openings 28 passive connection openings 4 failed connection attempts 11 connection resets received 1 connections established 178253 segments received 137936 segments send out 29 segments retransmited 0 bad segments received. 336 resets sent Udp: 5714 packets received 8 packets to unknown port received. 0 packet receive errors 5419 packets sent TcpExt: 1 resets received for embryonic SYN_RECV sockets ArpFilter: 0 12 TCP sockets finished time wait in fast timer 572 delayed acks sent 3 delayed acks further delayed because of locked socket 13766 packets directly queued to recvmsg prequeue. 1101482 packets directly received from backlog 19599861 packets directly received from prequeue 46860 packets header predicted 14541 packets header predicted and directly queued to user TCPPureAcks: 12259 TCPHPAcks: 9119 TCPRenoRecovery: 0 TCPSackRecovery: 0 TCPSACKReneging: 0 TCPFACKReorder: 0 TCPSACKReorder: 0 TCPRenoReorder: 0 TCPTSReorder: 0 TCPFullUndo: 0 TCPPartialUndo: 0 TCPDSACKUndo: 0 TCPLossUndo: 0 TCPLoss: 0 TCPLostRetransmit: 0 TCPRenoFailures: 0 TCPSackFailures: 0 TCPLossFailures: 0 TCPFastRetrans: 0 TCPForwardRetrans: 0 TCPSlowStartRetrans: 0 TCPTimeouts: 29 TCPRenoRecoveryFail: 0 TCPSackRecoveryFail: 0 TCPSchedulerFailed: 0 TCPRcvCollapsed: 0 TCPDSACKOldSent: 0 TCPDSACKOfoSent: 0 TCPDSACKRecv: 0 TCPDSACKOfoRecv: 0 TCPAbortOnSyn: 0 TCPAbortOnData: 1 TCPAbortOnClose: 0 TCPAbortOnMemory: 0 TCPAbortOnTimeout: 3 TCPAbortOnLinger: 0 TCPAbortFailed: 3 TCPMemoryPressures: 0
Layar monitor socket
# netstat -l Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 *:32769 *:* LISTEN tcp 0 0 *:nfs *:* LISTEN tcp 0 0 *:644 *:* LISTEN tcp 0 0 *:1002 *:* LISTEN tcp 0 0 *:netbios-ssn *:* LISTEN tcp 0 0 *:sunrpc *:* LISTEN tcp 0 0 vm-dev:ipp *:* LISTEN tcp 0 0 *:telnet *:* LISTEN tcp 0 0 *:601 *:* LISTEN tcp 0 0 *:microsoft-ds *:* LISTEN tcp 0 0 *:http *:* LISTEN tcp 0 0 *:ssh *:* LISTEN tcp 0 0 *:https *:* LISTEN udp 0 0 *:32768 *:* udp 0 0 *:nfs *:* udp 0 0 *:641 *:* udp 0 0 192.168.0.3:netbios-ns *:* udp 0 0 *:netbios-ns *:* udp 0 0 192.168.0.3:netbios-dgm *:* udp 0 0 *:netbios-dgm *:* udp 0 0 *:tftp *:* udp 0 0 *:999 *:* udp 0 0 *:sunrpc *:* udp 0 0 *:ipp *:* udp 0 0 *:1022 *:* udp 0 0 *:638 *:* Active UNIX domain sockets (only servers) Proto RefCnt Flags Type State I-Node Path unix 2 [ ACC ] STREAM LISTENING 10621 @/tmp/fam-root- unix 2 [ ACC ] STREAM LISTENING 7096 /var/run/acpid.socket unix 2 [ ACC ] STREAM LISTENING 9792 /tmp/.gdm_socket unix 2 [ ACC ] STREAM LISTENING 9927 /tmp/.X11-unix/X0 unix 2 [ ACC ] STREAM LISTENING 10489 /tmp/ssh-lbUnUf4552/agent.4552 unix 2 [ ACC ] STREAM LISTENING 10558 /tmp/ksocket-root/kdeinit__0 unix 2 [ ACC ] STREAM LISTENING 10560 /tmp/ksocket-root/kdeinit-:0 unix 2 [ ACC ] STREAM LISTENING 10570 /tmp/.ICE-unix/dcop4664-1270815442 unix 2 [ ACC ] STREAM LISTENING 10843 /tmp/.ICE-unix/4735 unix 2 [ ACC ] STREAM LISTENING 10591 /tmp/ksocket-root/klauncherah3arc.slave-socket unix 2 [ ACC ] STREAM LISTENING 7763 /var/run/iiim/.iiimp-unix/9010 unix 2 [ ACC ] STREAM LISTENING 11047 /tmp/orbit-root/linc-1291-0-1e92c8082411 unix 2 [ ACC ] STREAM LISTENING 11053 /tmp/orbit-root/linc-128e-0-dc070659cbb3 unix 2 [ ACC ] STREAM LISTENING 8020 /var/run/dbus/system_bus_socket unix 2 [ ACC ] STREAM LISTENING 58927 /tmp/mcop-root/vm-dev-2c28-4beba75f unix 2 [ ACC ] STREAM LISTENING 7860 /tmp/.font-unix/fs7100 unix 2 [ ACC ] STREAM LISTENING 7658 /dev/gpmctl unix 2 [ ACC ] STREAM LISTENING 10498 @/tmp/dbus-s2MLJGO5Ci