Otu esi eme ka ọnọdụ nbipu SSH nwee nsogbu iji dozie njikọ SSH

N'isiokwu a, anyị ga-egosi gị otu esi agbanye ọnọdụ nbibi mgbe ị na-agba SSH na Linux. Nke a ga-enyere gị aka ịhụ ihe na-eme n'ezie mgbe ị na-eme iwu ssh iji jikọọ na sava Linux dịpụrụ adịpụ site na iji verbose mode ma ọ bụ debugging mode.

[Ị nwekwara ike ịmasị: Ụzọ 4 iji mee ka njikọ SSH dị ngwa na Linux]

Mgbanwe nke -v onye ahịa ssh na-enye gị ohere ịme ssh na ọnọdụ verbose, nke na-ebipụta ozi nbipute gbasara ọganihu njikọ SSH, nke bara uru n'ezie maka njikọ nbipu, nkwenye, na nsogbu nhazi ọ bụla.

Enwere ọkwa dị iche iche nke verbosity; iji otutu -v ọkọlọtọ na-abawanye okwu ọnụ (ọkwa verbosity kacha bụ 3).

ssh -v ga-agwa gị ihe na-emekarị na njedebe gị.
ssh -vv ga-agwa gị ọkwa dị ala na nsọtụ abụọ ahụ.
ssh -vvv - ga-agwa gị ihe niile site na nsọtụ abụọ ahụ.

Iwu na-esonụ ga-agba ọsọ SSH na ọkwa mbụ nke verbosity, nke na-enye anyị ọtụtụ ozi nbipu dị ka egosiri.

[email  ~ $ ssh -v [email

OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, OpenSSL 1.0.2g-fips  1 Mar 2016
debug1: Reading configuration data /home/aaronkilik/.ssh/config
debug1: /home/aaronkilik/.ssh/config line 18: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 192.168.56.10 [192.168.56.10] port 22.
debug1: Connection established.
debug1: identity file /home/aaronkilik/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/aaronkilik/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/aaronkilik/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/aaronkilik/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/aaronkilik/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/aaronkilik/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/aaronkilik/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/aaronkilik/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.2
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4
debug1: match: OpenSSH_7.4 pat OpenSSH* compat 0x04000000
debug1: Authenticating to 192.168.56.10:22 as 'tecmint'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: [email 
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email  MAC:
compression: [email 
debug1: kex: client->server cipher: [email  MAC:
compression: [email 
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 
SHA256:1778erqyug4tHJa7D6y/Ep4UWsUtNEOBSMaj32k9oO8
debug1: Host '192.168.56.10' is known and matches the ECDSA host key.
debug1: Found key in /home/aaronkilik/.ssh/known_hosts:8
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: 
publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/aaronkilik/.ssh/id_rsa
debug1: Server accepts key: pkalg rsa-sha2-512 blen 279
debug1: Enabling compression at level 6.
debug1: Authentication succeeded (publickey).
Authenticated to 192.168.56.10 ([192.168.56.10]:22).
debug1: channel 0: new [client-session]
debug1: Requesting [email 
debug1: Entering interactive session.
debug1: pledge: network
debug1: client_input_global_request: rtype [email  
want_reply 0
debug1: Sending environment.
debug1: Sending env LC_PAPER = lg_UG.UTF-8
debug1: Sending env LC_ADDRESS = lg_UG.UTF-8
debug1: Sending env LC_MONETARY = lg_UG.UTF-8
debug1: Sending env LC_NUMERIC = lg_UG.UTF-8
debug1: Sending env LC_TELEPHONE = lg_UG.UTF-8
debug1: Sending env LC_IDENTIFICATION = lg_UG.UTF-8
debug1: Sending env LANG = en_US.UTF-8
debug1: Sending env LC_MEASUREMENT = lg_UG.UTF-8
debug1: Sending env LC_NAME = lg_UG.UTF-8
Last login: Sat Jan  6 16:20:11 2018 from 192.168.56.1

Mgbe ị na-agbalị ịpụ ma ọ bụ pụọ na nnọkọ ahụ, ị ga-ahụkwa ozi nbibi dị ka egosiri.

[[email  ~]$ exit

logout
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: client_input_channel_req: channel 0 rtype [email  reply 0
debug1: channel 0: free: client-session, nchannels 1
Connection to 192.168.56.10 closed.
Transferred: sent 3392, received 3120 bytes, in 118.1 seconds
Bytes per second: sent 28.7, received 26.4
debug1: Exit status 0
debug1: compress outgoing: raw data 1159, compressed 573, factor 0.49
debug1: compress incoming: raw data 573, compressed 1159, factor 2.02

Na-esote, ị nwere ike mee ka agbakwunyere (ọkwa 2 na 3) verbosity maka ozi nbipu karịa ka egosiri.

$ ssh -vv [email 
$ ssh -vvv [email

Ọ bụ ya! Maka ojiji ọzọ nke SSH, gụọ akụkọ ndị a metụtara.

Otu esi echekwa ma mee ka sava OpenSSH sie ike
Omume 5 kacha mma iji gbochie mwakpo nbanye SSH Brute-Force na Linux
Otu esi achọta Mgbalị nbanye SSH niile dara na Linux
Etu esi agbanyụọ SSH Root Login na Linux
Etu esi edobe SSH Passwordless Nbanye na Linux
Etu esi ewepu njikọ SSH adịghị arụ ọrụ ma ọ bụ na-adịghị arụ ọrụ na Linux

Anyị nwere olileanya na ị ga-ahụ na akụkọ a na-enyere gị aka. Ị nwere ike ịjụ ajụjụ ọ bụla ma ọ bụ kesaa echiche site na ụdị nkọwa n'okpuru.