| /l3/users/17-12-2012/NT-Lnet/debian1.net.nt/user :1 :2 :3 :4 |
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$ping ya.ru
PING ya.ru (213.180.193.3) 56(84) bytes of data. 64 bytes from www.yandex.ru (213.180.193.3): icmp_req=1 ttl=56 time=17.2 ms 64 bytes from www.yandex.ru (213.180.193.3): icmp_req=2 ttl=56 time=17.4 ms 64 bytes from www.yandex.ru (213.180.193.3): icmp_req=3 ttl=56 time=17.7 ms 64 bytes from www.yandex.ru (213.180.193.3): icmp_req=4 ttl=56 time=17.2 ms ^C --- ya.ru ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3004ms rtt min/avg/max/mdev = 17.265/17.437/17.737/0.187 ms |
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$ping -n ya.ru
PING ya.ru (93.158.134.3) 56(84) bytes of data. 64 bytes from 93.158.134.3: icmp_req=1 ttl=58 time=17.0 ms 64 bytes from 93.158.134.3: icmp_req=2 ttl=58 time=16.5 ms 64 bytes from 93.158.134.3: icmp_req=3 ttl=58 time=16.9 ms ^C --- ya.ru ping statistics --- 4 packets transmitted, 3 received, 25% packet loss, time 3004ms rtt min/avg/max/mdev = 16.558/16.832/17.031/0.200 ms |
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$ping -n -c 4 ya.ru
PING ya.ru (87.250.250.203) 56(84) bytes of data. 64 bytes from 87.250.250.203: icmp_req=1 ttl=56 time=16.5 ms 64 bytes from 87.250.250.203: icmp_req=2 ttl=56 time=17.2 ms 64 bytes from 87.250.250.203: icmp_req=3 ttl=59 time=17.6 ms 64 bytes from 87.250.250.203: icmp_req=4 ttl=56 time=16.7 ms --- ya.ru ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3005ms rtt min/avg/max/mdev = 16.576/17.052/17.653/0.442 ms |
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$ping -n -w 4 ya.ru
PING ya.ru (213.180.204.3) 56(84) bytes of data. 64 bytes from 213.180.204.3: icmp_req=1 ttl=56 time=17.4 ms 64 bytes from 213.180.204.3: icmp_req=2 ttl=59 time=17.5 ms 64 bytes from 213.180.204.3: icmp_req=3 ttl=59 time=17.3 ms 64 bytes from 213.180.204.3: icmp_req=4 ttl=56 time=17.1 ms --- ya.ru ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3005ms rtt min/avg/max/mdev = 17.151/17.374/17.521/0.174 ms |
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$echo $?
0 |
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$ping -i 3
Usage: ping [-LRUbdfnqrvVaAD] [-c count] [-i interval] [-w deadline]
[-p pattern] [-s packetsize] [-t ttl] [-I interface]
[-M pmtudisc-hint] [-m mark] [-S sndbuf]
[-T tstamp-options] [-Q tos] [hop1 ...] destination
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$ping -i 3 ya.ru
PING ya.ru (93.158.134.3) 56(84) bytes of data. 64 bytes from www.yandex.ru (93.158.134.3): icmp_req=1 ttl=58 time=17.0 ms 64 bytes from www.yandex.ru (93.158.134.3): icmp_req=2 ttl=58 time=17.3 ms 64 bytes from www.yandex.ru (93.158.134.3): icmp_req=3 ttl=58 time=17.2 ms 64 bytes from www.yandex.ru (93.158.134.3): icmp_req=4 ttl=58 time=17.4 ms ^C --- ya.ru ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 9010ms rtt min/avg/max/mdev = 17.012/17.286/17.491/0.180 ms |
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$ping -f ya.ru
PING ya.ru (93.158.134.203) 56(84) bytes of data. ping: cannot flood; minimal interval, allowed for user, is 200ms |
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$ping -s 10000 -f ya.ru
PING ya.ru (93.158.134.3) 10000(10028) bytes of data. ping: cannot flood; minimal interval, allowed for user, is 200ms |
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$ping -s 10000 -i 1 -f ya.ru
PING ya.ru (87.250.251.3) 10000(10028) bytes of data. ^C --- ya.ru ping statistics --- 14 packets transmitted, 14 received, 0% packet loss, time 13022ms rtt min/avg/max/mdev = 20.617/21.082/21.460/0.233 ms, ipg/ewma 1001.714/21.061 ms |
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$ping -s 10000 -i 0.2 -f ya.ru
PING ya.ru (87.250.250.203) 10000(10028) bytes of data. ^C --- ya.ru ping statistics --- 139 packets transmitted, 139 received, 0% packet loss, time 27714ms rtt min/avg/max/mdev = 20.465/21.095/22.186/0.326 ms, ipg/ewma 200.826/21.058 ms |
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$su
Пароль: root@debian1:/home/user# l3script |
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#ping -f ya.ru
PING ya.ru (77.88.21.3) 56(84) bytes of data. .......^C --- ya.ru ping statistics --- 1396 packets transmitted, 1389 received, 0% packet loss, time 19535ms rtt min/avg/max/mdev = 16.525/17.252/21.505/0.357 ms, pipe 2, ipg/ewma 14.003/17.392 ms |
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#traceroute ya.ru
traceroute to ya.ru (93.158.134.203), 30 hops max, 60 byte packets 1 net.nt (192.168.13.253) 0.119 ms 0.207 ms 0.188 ms 2 10.0.64.155 (10.0.64.155) 2.151 ms 2.150 ms 2.130 ms 3 78.154.160.125.ett.ua (78.154.160.125) 2.112 ms 2.107 ms 2.099 ms 4 yandex-10g-gw.ix.net.ua (195.35.65.88) 2.091 ms 2.416 ms 2.409 ms 5 87.250.239.71 (87.250.239.71) 19.076 ms 19.081 ms 19.076 ms 6 * * * 7 www.yandex.ru (93.158.134.203) 17.461 ms 17.465 ms 17.537 ms |
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#traceroute ya.ru
traceroute to ya.ru (87.250.250.203), 30 hops max, 60 byte packets 1 fobos.net.nt (192.168.13.253) 0.111 ms 0.093 ms 0.346 ms 2 10.0.64.155 (10.0.64.155) 0.347 ms 0.339 ms 0.328 ms 3 78.154.160.125.ett.ua (78.154.160.125) 0.834 ms 0.830 ms 0.803 ms 4 yandex-10g-gw.ix.net.ua (195.35.65.88) 0.942 ms 0.936 ms 0.928 ms 5 87.250.239.71 (87.250.239.71) 17.727 ms 17.718 ms 17.850 ms 6 www.yandex.ru (87.250.250.203) 17.677 ms 18.156 ms 17.578 ms |
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#host ya.ru
ya.ru has address 213.180.193.3 ya.ru has address 213.180.204.3 ya.ru has address 77.88.21.3 ya.ru has address 87.250.250.3 ya.ru has address 87.250.250.203 ya.ru has address 87.250.251.3 ya.ru has address 93.158.134.3 ya.ru has address 93.158.134.203 ya.ru mail is handled by 10 mx.yandex.ru. |
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#less /etc/services
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#traceroute --help
Usage:
traceroute [ -46dFITnreAUV ] [ -f first_ttl ] [ -g gate,... ] [ -i device ] [ -m max_ttl ] [ -N squeries ] [ -p port ] [ -t tos ] [ -l flow_label ] [ -w waittime ] [ -q nqueries ] [ -s src_addr ] [ -z sendwait ] host [ packetlen ]
Options:
-4 Use IPv4
-6 Use IPv6
-d --debug Enable socket level debugging
-F --dont-fragment Do not fragment packets
-f first_ttl --first=first_ttl
Start from the first_ttl hop (instead from 1)
-g gate,... --gateway=gate,...
...
`-F -N 1'
--back Guess the number of hops in the backward path and
print if it differs
-V --version Print version info and exit
--help Read this help and exit
Arguments:
+ host The host to traceroute to
packetlen The full packet length (default is the length of an IP
header plus 40). Can be ignored or increased to a minimal
allowed value
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#traceroute -I ya.ru
traceroute to ya.ru (93.158.134.203), 30 hops max, 60 byte packets 1 net.nt (192.168.13.253) 0.195 ms 0.196 ms 0.194 ms 2 10.0.64.155 (10.0.64.155) 0.571 ms 0.591 ms 0.586 ms 3 78.154.160.125.ett.ua (78.154.160.125) 0.760 ms 0.850 ms 0.848 ms 4 yandex-10g-gw.ix.net.ua (195.35.65.88) 0.987 ms 0.987 ms 0.985 ms 5 87.250.239.71 (87.250.239.71) 17.732 ms 17.738 ms 17.735 ms 6 * * * 7 www.yandex.ru (93.158.134.203) 17.289 ms 17.133 ms 17.011 ms |
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#traceroute -q 5 ya.ru
traceroute to ya.ru (87.250.250.203), 30 hops max, 60 byte packets 1 fobos.net.nt (192.168.13.253) 0.080 ms 0.154 ms 0.135 ms 0.127 ms 0.119 ms 2 10.0.64.155 (10.0.64.155) 0.425 ms 0.413 ms 0.405 ms 0.398 ms 0.389 ms 3 78.154.160.125.ett.ua (78.154.160.125) 0.765 ms 1.708 ms 1.698 ms 1.691 ms 1.683 ms 4 yandex-10g-gw.ix.net.ua (195.35.65.88) 1.674 ms 1.291 ms 2.120 ms 2.114 ms 2.107 ms 5 87.250.239.71 (87.250.239.71) 59.582 ms 56.880 ms 57.425 ms 57.421 ms 57.414 ms 6 www.yandex.ru (87.250.250.203) 18.346 ms 17.927 ms 17.559 ms 17.538 ms 17.513 ms |
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#less /etc/services
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#telnet localhost 80
Trying 127.0.0.1... telnet: Unable to connect to remote host: Connection refused |
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#telnet 192.168.13.253 80
Trying 192.168.13.253... Connected to 192.168.13.253. Escape character is '^]'. ^] telnet> quit Connection closed. |
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#nc fobos.net.nt 53
^C |
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#n
namei nc.traditional netload nfsstat nohup nameif ncurses5-config netstat ngettext nologin nano ncursesw5-config netwatch nice nproc nawk ndiff newaliases nisdomainname nroff nc neqn newgrp nl nslookup ncal netcat newusers nm nstat ncat netkit-ftp nfnl_osf nmap nsupdate |
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#nc 192.168.13.253 53
^C |
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#nc fobos.net.nt 80
^C |
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#nc localhost 80
localhost.localdomain [127.0.0.1] 80 (www) : Connection refused |
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#nc localhost 53
localhost.localdomain [127.0.0.1] 53 (domain) : Connection refused |
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#nc -p 80 fobos.net.nt 53 -u
^C |
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#nc -z localhost 1-100
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#nc -z localhost 1-100 -v
localhost.localdomain [127.0.0.1] 25 (smtp) open localhost.localdomain [127.0.0.1] 22 (ssh) open |
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#nc -z localhost
no port[s] to connect to |
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#nc -z localhost -v
no port[s] to connect to |
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#nc -z 1-1000 localhost -v
1-1000: forward host lookup failed: Unknown host |
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#nc -z localhost 1-1000 -v
localhost.localdomain [127.0.0.1] 111 (sunrpc) open localhost.localdomain [127.0.0.1] 25 (smtp) open localhost.localdomain [127.0.0.1] 22 (ssh) open |
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#nc -z localhost all -v
invalid port all |
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#nc -z localhost * -v
invalid port bigfile |
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#cat /etc/passwd|nc -l -p 3000
^C |
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#telnet 192.168.13.3 3333
Trying 192.168.13.3... Connected to 192.168.13.3. Escape character is '^]'. root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/bin/sh bin:x:2:2:bin:/bin:/bin/sh sys:x:3:3:sys:/dev:/bin/sh sync:x:4:65534:sync:/bin:/bin/sync games:x:5:60:games:/usr/games:/bin/sh man:x:6:12:man:/var/cache/man:/bin/sh ... nobody:x:65534:65534:nobody:/nonexistent:/bin/sh libuuid:x:100:101::/var/lib/libuuid:/bin/sh Debian-exim:x:101:103::/var/spool/exim4:/bin/false statd:x:102:65534::/var/lib/nfs:/bin/false user:x:1000:1000:user,,,:/home/user:/bin/bash sshd:x:103:65534::/var/run/sshd:/usr/sbin/nologin telnetd:x:104:106::/nonexistent:/bin/false ^] telnet> quit Connection closed. |
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#nmap localhost
Starting Nmap 5.00 ( http://nmap.org ) at 2012-12-18 10:50 EET Interesting ports on localhost.localdomain (127.0.0.1): Not shown: 997 closed ports PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 111/tcp open rpcbind Nmap done: 1 IP address (1 host up) scanned in 0.14 seconds |
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#netstat
Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 236 debian1.net.nt:ssh 192.168.15.102:49159 ESTABLISHED Active UNIX domain sockets (w/o servers) Proto RefCnt Flags Type State I-Node Path unix 2 [ ] DGRAM 2395 @/org/kernel/udev/udevd unix 4 [ ] DGRAM 3570 /dev/log unix 3 [ ] STREAM CONNECTED 8623 unix 3 [ ] STREAM CONNECTED 8622 unix 2 [ ] DGRAM 8621 unix 2 [ ] DGRAM 3591 unix 3 [ ] DGRAM 2400 unix 3 [ ] DGRAM 2399 |
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#netstat -l
Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 *:47662 *:* LISTEN tcp 0 0 *:sunrpc *:* LISTEN tcp 0 0 *:ssh *:* LISTEN tcp 0 0 localhost.localdom:smtp *:* LISTEN tcp6 0 0 [::]:ssh [::]:* LISTEN tcp6 0 0 ::1%3220586888:smtp [::]:* LISTEN udp 0 0 *:sunrpc *:* udp 0 0 *:44684 *:* udp 0 0 *:853 *:* Active UNIX domain sockets (only servers) Proto RefCnt Flags Type State I-Node Path unix 2 [ ACC ] STREAM LISTENING 3594 /var/run/acpid.socket |
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#netstat -lp
Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:47662 *:* LISTEN 677/rpc.statd tcp 0 0 *:sunrpc *:* LISTEN 665/portmap tcp 0 0 *:ssh *:* LISTEN 1075/sshd tcp 0 0 localhost.localdom:smtp *:* LISTEN 1164/exim4 tcp6 0 0 [::]:ssh [::]:* LISTEN 1075/sshd tcp6 0 0 ::1%3219512968:smtp [::]:* LISTEN 1164/exim4 udp 0 0 *:sunrpc *:* 665/portmap udp 0 0 *:44684 *:* 677/rpc.statd udp 0 0 *:853 *:* 677/rpc.statd Active UNIX domain sockets (only servers) Proto RefCnt Flags Type State I-Node PID/Program name Path unix 2 [ ACC ] STREAM LISTENING 3594 851/acpid /var/run/acpid.socket |
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#netstat -nlp
Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:47662 0.0.0.0:* LISTEN 677/rpc.statd tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 665/portmap tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1075/sshd tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1164/exim4 tcp6 0 0 :::22 :::* LISTEN 1075/sshd tcp6 0 0 ::1:25 :::* LISTEN 1164/exim4 udp 0 0 0.0.0.0:111 0.0.0.0:* 665/portmap udp 0 0 0.0.0.0:44684 0.0.0.0:* 677/rpc.statd udp 0 0 0.0.0.0:853 0.0.0.0:* 677/rpc.statd Active UNIX domain sockets (only servers) Proto RefC |