Command untuk cek jaringan kita

Malam ini iseng nyoba cek jaringan sendiri yang ada di laptop.berikut semua commandnya :

Menampilkan semua socket tcp :

$ ss -s

Contoh output :

Total: 777 (kernel 783)
TCP:   40 (estab 17, closed 3, orphaned 1, synrecv 0, timewait 0/0), ports 0
Transport Total     IP        IPv6
*      783       -         -
RAW      0         0         0
UDP      8         6         2
TCP      37        31        6
INET      45        37        8
FRAG      0         0         0

Netstat command :

$ netstat -s

Contoh output :

Ip:
38667 total packets received
3 with invalid headers
321 with invalid addresses
0 forwarded
17 with unknown protocol
0 incoming packets discarded
38310 incoming packets delivered
9133 requests sent out
9 dropped because of missing route
10 fragments dropped after timeout
10 reassemblies required
10 packet reassembles failed
Icmp:
307 ICMP messages received
4 input ICMP message failed.
ICMP input histogram:
destination unreachable: 302
echo requests: 2
305 ICMP messages sent
0 ICMP messages failed
ICMP output histogram:
destination unreachable: 304
echo replies: 1
IcmpMsg:
InType3: 302
InType8: 2
InType10: 3
OutType0: 1
OutType3: 304
Tcp:
433 active connections openings
1 passive connection openings
6 failed connection attempts
7 connection resets received
16 connections established
6739 segments received
7219 segments send out
311 segments retransmited
0 bad segments received.
78 resets sent
Udp:
3233 packets received
304 packets to unknown port received.
0 packet receive errors
1290 packets sent
UdpLite:
TcpExt:
2 packets pruned from receive queue because of socket buffer overrun
137 TCP sockets finished time wait in fast timer
1 packets rejects in established connections because of timestamp
199 delayed acks sent
Quick ack mode was activated 181 times
2946 packet headers predicted
1032 acknowledgments not containing data payload received
64 predicted acknowledgments
155 congestion windows recovered without slow start after partial ack
24 timeouts in loss state
4 retransmits in slow start
234 other TCP timeouts
76 packets collapsed in receive queue due to low socket buffer
12 connections reset due to unexpected data
7 connections aborted due to timeout
IpExt:
InMcastPkts: 2367
OutMcastPkts: 26
InBcastPkts: 27760
OutBcastPkts: 104
InOctets: 14435248
OutOctets: 1791989
InMcastOctets: 321133
OutMcastOctets: 3191
InBcastOctets: 8113225
OutBcastOctets: 14456

Display semua Open Network Ports :

$ ss -l

Contoh output :

Recv-Q Send-Q           Local Address:Port               Peer Address:Port
0      128                          *:webmin                        *:*
0      128                         :::www                          :::*
0      16                   127.0.0.1:28017                         *:*
0      50            ::ffff:127.0.0.1:49330                        :::*
0      128                          *:ftp                           *:*
0      128                         :::ssh                          :::*
0      128                          *:ssh                           *:*
0      128                  127.0.0.1:ipp                           *:*
0      128                        ::1:ipp                          :::*
0      128                          *:17500                         *:*
0      128                          *:9571                          *:*
0      128                          *:9572                          *:*
0      128                  127.0.0.1:27017                         *:*
0      50                   127.0.0.1:mysql                         *:*

Netstat command :

$ netstat -tulpn

Contoh output :

(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:10000           0.0.0.0:*               LISTEN      -
tcp        0      0 127.0.0.1:28017         0.0.0.0:*               LISTEN      -
tcp        0      0 0.0.0.0:21              0.0.0.0:*               LISTEN      -
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      -
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN      -
tcp        0      0 0.0.0.0:17500           0.0.0.0:*               LISTEN      3380/dropbox
tcp        0      0 0.0.0.0:9571            0.0.0.0:*               LISTEN      -
tcp        0      0 0.0.0.0:9572            0.0.0.0:*               LISTEN      -
tcp        0      0 127.0.0.1:27017         0.0.0.0:*               LISTEN      -
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      -
tcp6       0      0 :::80                   :::*                    LISTEN      -
tcp6       0      0 127.0.0.1:49330         :::*                    LISTEN      3431/symphony
tcp6       0      0 :::22                   :::*                    LISTEN      -
tcp6       0      0 ::1:631                 :::*                    LISTEN      -
udp        0      0 0.0.0.0:5353            0.0.0.0:*                           -
udp        0      0 0.0.0.0:10000           0.0.0.0:*                           -
udp        0      0 0.0.0.0:57886           0.0.0.0:*                           -
udp        0      0 0.0.0.0:68              0.0.0.0:*                           -
udp        0      0 0.0.0.0:69              0.0.0.0:*                           -
udp     4608      0 0.0.0.0:17500           0.0.0.0:*                           3380/dropbox
udp6       0      0 :::5353                 :::*                                -
udp6       0      0 :::40718                :::*                                -

Display semua TCP Sockets :

$ ss -t -a

Contoh output :

State      Recv-Q Send-Q      Local Address:Port          Peer Address:Port
LISTEN     0      128                     *:webmin                   *:*
LISTEN     0      128                    :::www                     :::*
LISTEN     0      16              127.0.0.1:28017                    *:*
LISTEN     0      50       ::ffff:127.0.0.1:49330                   :::*
LISTEN     0      128                     *:ftp                      *:*
LISTEN     0      128                    :::ssh                     :::*
LISTEN     0      128                     *:ssh                      *:*
LISTEN     0      128             127.0.0.1:ipp                      *:*
LISTEN     0      128                   ::1:ipp                     :::*
LISTEN     0      128                     *:17500                    *:*
LISTEN     0      128                     *:9571                     *:*
LISTEN     0      128                     *:9572                     *:*
LISTEN     0      128             127.0.0.1:27017                    *:*
LISTEN     0      50              127.0.0.1:mysql                    *:*
ESTAB      0      0            10.22.11.196:54881       180.235.151.23:www
ESTAB      0      0            10.22.11.196:53287         174.36.30.56:www
CLOSE-WAIT 38     0            10.22.11.196:56859        208.43.202.51:https
ESTAB      0      0            10.22.11.196:53816         69.63.181.11:www
ESTAB      0      0            10.22.11.196:54862       180.235.151.23:www
ESTAB      0      1054         10.22.11.196:54859       180.235.151.23:www
ESTAB      0      0            10.22.11.196:44691       64.233.183.100:www
CLOSE-WAIT 38     0            10.22.11.196:51552        75.126.115.38:https
FIN-WAIT-2 0      0                     ::1:59119                  ::1:45586
ESTAB      0      0            10.22.11.196:39054         96.17.159.27:www
CLOSE-WAIT 38     0            10.22.11.196:60850        208.43.202.50:https
ESTAB      0      0            10.22.11.196:43693       209.85.175.102:https
CLOSE-WAIT 1      0                     ::1:45586                  ::1:59119
ESTAB      0      0            10.22.11.196:44692       64.233.183.100:www
ESTAB      0      0            10.22.11.196:54882       180.235.151.23:www
ESTAB      0      0            10.22.11.196:54848       180.235.151.23:www
ESTAB      0      0            10.22.11.196:58219        202.187.31.12:www
ESTAB      0      1047         10.22.11.196:54835       180.235.151.23:www
ESTAB      0      0            10.22.11.196:53817         69.63.181.11:www
ESTAB      0      0            10.22.11.196:48452       209.85.175.106:www

Netstat command :

$ netstat -nat

Contoh output :

Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:10000           0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:28017         0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:21              0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:17500           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:9571            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:9572            0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:27017         0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN
tcp        0      0 10.22.11.196:53287      174.36.30.56:80         ESTABLISHED
tcp       38      0 10.22.11.196:56859      208.43.202.51:443       CLOSE_WAIT
tcp        0      0 10.22.11.196:53816      69.63.181.11:80         ESTABLISHED
tcp        0   1058 10.22.11.196:54883      180.235.151.23:80       ESTABLISHED
tcp        0      0 10.22.11.196:54862      180.235.151.23:80       ESTABLISHED
tcp        0   1054 10.22.11.196:54859      180.235.151.23:80       ESTABLISHED
tcp        0      0 10.22.11.196:44691      64.233.183.100:80       ESTABLISHED
tcp       38      0 10.22.11.196:51552      75.126.115.38:443       CLOSE_WAIT
tcp        0      0 10.22.11.196:39054      96.17.159.27:80         ESTABLISHED
tcp       38      0 10.22.11.196:60850      208.43.202.50:443       CLOSE_WAIT
tcp        0      0 10.22.11.196:43693      209.85.175.102:443      ESTABLISHED
tcp        0      0 10.22.11.196:44692      64.233.183.100:80       ESTABLISHED
tcp        0   1055 10.22.11.196:54882      180.235.151.23:80       ESTABLISHED
tcp        0      0 10.22.11.196:54848      180.235.151.23:80       ESTABLISHED
tcp        0      0 10.22.11.196:58219      202.187.31.12:80        ESTABLISHED
tcp        0   1047 10.22.11.196:54835      180.235.151.23:80       ESTABLISHED
tcp        0      0 10.22.11.196:53817      69.63.181.11:80         ESTABLISHED
tcp        0      0 10.22.11.196:48452      209.85.175.106:80       ESTABLISHED
tcp6       0      0 :::80                   :::*                    LISTEN
tcp6       0      0 127.0.0.1:49330         :::*                    LISTEN
tcp6       0      0 :::22                   :::*                    LISTEN
tcp6       0      0 ::1:631                 :::*                    LISTEN
tcp6       0      0 ::1:59119               ::1:45586               FIN_WAIT2
tcp6       1      0 ::1:45586               ::1:59119               CLOSE_WAIT

Display semua UDP Sockets :

$ ss -u -a

Contoh output :

State      Recv-Q Send-Q      Local Address:Port          Peer Address:Port
UNCONN     0      0                       *:mdns                     *:*
UNCONN     0      0                       *:10000                    *:*
UNCONN     0      0                       *:57886                    *:*
UNCONN     0      0                       *:bootpc                   *:*
UNCONN     0      0                       *:tftp                     *:*
UNCONN     6912   0                       *:17500                    *:*
UNCONN     0      0                      :::mdns                    :::*
UNCONN     0      0                      :::40718                   :::*

Netstat command :

$ netstat -nau

Contoh output :

Active Internet connections (servers and established)
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 0.0.0.0:10000           0.0.0.0:*
udp        0      0 0.0.0.0:57886           0.0.0.0:*
udp        0      0 0.0.0.0:68              0.0.0.0:*
udp        0      0 0.0.0.0:69              0.0.0.0:*
udp        0      0 0.0.0.0:17500           0.0.0.0:*
udp6       0      0 :::5353                 :::*
udp6       0      0 :::40718                :::*

lsof Command :

$ lsof -i :portNumber $ lsof -i tcp:portNumber $ lsof -i udp:portNumber $ lsof -i :80 | grep LISTEN

Hanya untuk Memunculkan Established Connections :

$ netstat -natu | grep 'ESTABLISHED'

Say Hello To tcptrack (memunculkan status koneksi TCP:

$ tcptrack -i eth0

* Klu belum d’install tcptrack, install dgn cara $ sudo apt-get install tcptrack…
iftop command :
iftop comman mendengarkan traffic jaringan pada interface jaringan yang diberikan seperti eth0, dan menampilkan tabel penggunaan bandwidth saat ini oleh pasangan host :