0X0000: 0019 dbaf 9333 d027 88cf e290 0800 4510 .....3.'......E.
0x0010: 0036 4893 4000 4006 d190 ac10 6415 ac10 .6H.@.@.....d...
0x0020: 6458 a4fe 0017 9901 0fb9 de57 eaf1 8018 dX.........W....
0x0030: 00ed de95 0000 0101 080a 42a0 aab8 8e8c ..........B.....
0x0040: d6a2 0d00 ....
18:29:08.166617 IP (tos 0x0, ttl 64, id 8009, offset 0, flags [DF], proto TCP (6), length 52)
172.16.100.88.23 > 172.16.100.21.42238: Flags [F.], cksum 0xd9e3 (correct), seq 7, ack 8, win 91, options [nop,nop,TS val 2391599341 ecr 1117825720], length 0
0X0000: d027 88cf e290 0019 dbaf 9333 0800 4500 .'.........3..E.
0x0010: 0034 1f49 4000 4006 faec ac10 6458 ac10 .4.I@.@.....dX..
0x0020: 6415 0017 a4fe de57 eaf1 9901 0fbb 8011 d......W........
0x0030: 005b d9e3 0000 0101 080a 8e8c e8ed 42a0 .[............B.
0x0040: aab8 ..
18:29:08.166712 IP (tos 0x10, ttl 64, id 18580, offset 0, flags [DF], proto TCP (6), length 52)
172.16.100.21.42238 > 172.16.100.88.23: Flags [F.], cksum 0xd94e (correct), seq 8, ack 8, win 237, options [nop,nop,TS val 1117825722 ecr 2391599341], length 0
0X0000: 0019 dbaf 9333 d027 88cf e290 0800 4510 .....3.'......E.
0x0010: 0034 4894 4000 4006 d191 ac10 6415 ac10 .4H.@.@.....d...
0x0020: 6458 a4fe 0017 9901 0fbb de57 eaf2 8011 dX.........W....
0x0030: 00ed d94e 0000 0101 080a 42a0 aaba 8e8c ...N......B.....
0x0040: e8ed ..
18:29:08.166953 IP (tos 0x0, ttl 64, id 8010, offset 0, flags [DF], proto TCP (6), length 52)
172.16.100.88.23 > 172.16.100.21.42238: Flags [.], cksum 0xd9e0 (correct), ack 9, win 91, options [nop,nop,TS val 2391599341 ecr 1117825722], length 0
0X0000: d027 88cf e290 0019 dbaf 9333 0800 4500 .'.........3..E.
0x0010: 0034 1f4a 4000 4006 faeb ac10 6458 ac10 .4.J@.@.....dX..
0x0020: 6415 0017 a4fe de57 eaf2 9901 0fbc 8010 d......W........
0x0030: 005b d9e0 0000 0101 080a 8e8c e8ed 42a0 .[............B.
0x0040: aaba
..
6. Снова запустить анализатор сетевого трафика с фильтром пакетов, получаемых и передаваемых от узла 172.16.100.88 c tcp-портом источника и назначения 22.
7. Открыть второй эмулятор терминала и с помощью команды user@host :[~] $ ssh -l student_nn 172.16.100.88 попытаться установить шифрованное соединение с удаленным сервером. Отметить взаимодействующие TCP-порты.
14:51:54.081892 IP (tos 0x0, ttl 64, id 22664, offset 0, flags [DF], proto TCP (6), length 52)
172.16.100.21.39248 > 172.16.100.88.22: Flags [.], cksum 0xbc5e (correct), ack 33, win 229, options [nop,nop,TS val 1104791547 ecr 2388340821], length 0
0x0000: 0019 dbaf 9333 d027 88cf e290 0800 4500 .....3.'......E.
0x0010: 0034 5888 4000 4006 c1ad ac10 6415 ac10 .4X.@.@.....d...
0x0020: 6458 9950 0016 abab 277c 4749 1c8e 8010 dX.P....'|GI....
0x0030: 00e5 bc5e 0000 0101 080a 41d9 c7fb 8e5b ...^......A....[
0x0040: 3055 0U
8. Подключившись к удаленной системе, ввести пароль stud и выполнить команду uname -a, выведя информацию об удаленной системе.
9. В домашнем каталоге пользователя создать текстовый файл с содержанием ФИО и номера лабораторного ПК. С помощью команды передать его по шифрованному каналу на удаленную систему. Проверить наличие копии переданного файла на удаленном узле, воспользовавшись файловым менеджером Midnight Commander (команда mc на удаленной системе).
Executing: program /usr/bin/ssh host 172.16.100.88, user (unspecified), command scp -v -t /home/student_01/
OpenSSH_7.9p1 Debian-9, OpenSSL 1.1.1b 26 Feb 2019
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 172.16.100.88 [172.16.100.88] port 22.
debug1: Connection established.
debug1: identity file /home/student/.ssh/id_rsa type -1
debug1: identity file /home/student/.ssh/id_rsa-cert type -1
debug1: identity file /home/student/.ssh/id_dsa type -1
debug1: identity file /home/student/.ssh/id_dsa-cert type -1
debug1: identity file /home/student/.ssh/id_ecdsa type -1
debug1: identity file /home/student/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/student/.ssh/id_ed25519 type -1
debug1: identity file /home/student/.ssh/id_ed25519-cert type -1
debug1: identity file /home/student/.ssh/id_xmss type -1
debug1: identity file /home/student/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.9p1 Debian-9
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.1p1 Debian-5
debug1: match: OpenSSH_5.1p1 Debian-5 pat OpenSSH_5* compat 0x0c000002
debug1: Authenticating to 172.16.100.88:22 as 'student_01'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: diffie-hellman-group-exchange-sha256
debug1: kex: host key algorithm: ssh-rsa
debug1: kex: server->client cipher: aes128-ctr MAC: umac-64@openssh.com compression: none
debug1: kex: client->server cipher: aes128-ctr MAC: umac-64@openssh.com compression: none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(2048<3072<8192) sent
debug1: got SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: got SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Server host key: ssh-rsa SHA256:toYD69y6puKpyeDYai8x1vg92nxr2YcH57HBVaUzKBs
debug1: Host '172.16.100.88' is known and matches the RSA host key.
debug1: Found key in /home/student/.ssh/known_hosts:4
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 4294967296 blocks
debug1: Will attempt key: /home/student/.ssh/id_rsa
debug1: Will attempt key: /home/student/.ssh/id_dsa
debug1: Will attempt key: /home/student/.ssh/id_ecdsa
debug1: Will attempt key: /home/student/.ssh/id_ed25519
debug1: Will attempt key: /home/student/.ssh/id_xmss
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Trying private key: /home/student/.ssh/id_rsa
debug1: Trying private key: /home/student/.ssh/id_dsa
debug1: Trying private key: /home/student/.ssh/id_ecdsa
debug1: Trying private key: /home/student/.ssh/id_ed25519
debug1: Trying private key: /home/student/.ssh/id_xmss
debug1: Next authentication method: password
student_01@172.16.100.88's password:
debug1: Authentication succeeded (password).
Authenticated to 172.16.100.88 ([172.16.100.88]:22).
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug1: pledge: network
debug1: Sending environment.
debug1: Sending env LANG = ru_RU.UTF-8
debug1: Sending command: scp -v -t /home/student_01/
Sending file modes: C0644 26 lab_04.txt
lab_04.txt 0% 0 0.0KB/s --:-- ETASink: C0644 26 lab_04.txt
lab_04.txt 100% 26 49.8KB/s 00:00
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: channel 0: free: client-session, nchannels 1
debug1: fd 0 clearing O_NONBLOCK
Transferred: sent 2440, received 2568 bytes, in 0.0 seconds
Bytes per second: sent 221395.2, received 233009.4
debug1: Exit status 0
