ssh_scan - Ṣayẹwo Iṣeto Server olupin SSH rẹ ati Afihan ni Lainos


ssh_scan jẹ apẹrẹ afọwọṣe SSH iṣeto-ọrọ ati ọlọjẹ eto imulo fun Lainos ati awọn olupin UNIX, ti atilẹyin nipasẹ Mozilla OpenSSH Aabo Itọsọna, eyiti o pese iṣeduro eto ipilẹ ti oye fun awọn ipilẹ iṣeto SSH bii Ciphers, MACs, ati KexAlgos ati pupọ diẹ sii.

O ni diẹ ninu awọn anfani atẹle:

  • O ni awọn igbẹkẹle ti o kere ju, ssh_scan nikan lo Ruby abinibi ati BinData lati ṣe iṣẹ rẹ, ko si awọn igbẹkẹle ti o wuwo.
  • O ṣee gbe, o le lo ssh_scan ninu iṣẹ miiran tabi fun adaṣe awọn iṣẹ-ṣiṣe.
  • O rọrun lati lo, jiroro ni tọka si iṣẹ SSH kan ki o gba ijabọ JSON ti ohun ti o ṣe atilẹyin ati pe o jẹ ipo eto imulo.
  • O tun le ṣe atunto, o le ṣẹda awọn ilana aṣa tirẹ ti o baamu awọn ibeere ilana rẹ pato.

Bii o ṣe le Fi sii ssh_scan ni Lainos

Awọn ọna mẹta lo wa ti o le fi sori ẹrọ ssh_scan ati pe wọn jẹ:

Lati fi sori ẹrọ ati ṣiṣe bi okuta iyebiye kan, tẹ:

----------- On Debian/Ubuntu ----------- 
$ sudo apt-get install ruby gem
$ sudo gem install ssh_scan

----------- On CentOS/RHEL ----------- 
# yum install ruby rubygem
# gem install ssh_scan

Lati ṣiṣe lati inu apoti docker, tẹ:

# docker pull mozilla/ssh_scan
# docker run -it mozilla/ssh_scan /app/bin/ssh_scan -t github.com

Lati fi sori ẹrọ ati ṣiṣe lati orisun, tẹ:

# git clone https://github.com/mozilla/ssh_scan.git
# cd ssh_scan
# gpg2 --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
# curl -sSL https://get.rvm.io | bash -s stable
# rvm install 2.3.1
# rvm use 2.3.1
# gem install bundler
# bundle install
# ./bin/ssh_scan

Bii o ṣe le Lo ssh_scan ni Lainos

Itọkasi fun lilo ssh_scan jẹ atẹle:

$ ssh_scan -t ip-address
$ ssh_scan -t server-hostname

Fun apẹẹrẹ lati ṣayẹwo awọn atunto SSH ati eto imulo ti olupin 92.168.43.198, tẹ:

$ ssh_scan -t 192.168.43.198

Akiyesi o tun le kọja [IP/Range/Hostname] si aṣayan -t bi a ṣe han ninu awọn aṣayan isalẹ:

$ ssh_scan -t 192.168.43.198,200,205
$ ssh_scan -t test.tecmint.lan
I, [2017-05-09T10:36:17.913644 #7145]  INFO -- : You're using the latest version of ssh_scan 0.0.19
[
  {
    "ssh_scan_version": "0.0.19",
    "ip": "192.168.43.198",
    "port": 22,
    "server_banner": "SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.1",
    "ssh_version": 2.0,
    "os": "ubuntu",
    "os_cpe": "o:canonical:ubuntu:16.04",
    "ssh_lib": "openssh",
    "ssh_lib_cpe": "a:openssh:openssh:7.2p2",
    "cookie": "68b17bcca652eeaf153ed18877770a38",
    "key_algorithms": [
      "[email ",
      "ecdh-sha2-nistp256",
      "ecdh-sha2-nistp384",
      "ecdh-sha2-nistp521",
      "diffie-hellman-group-exchange-sha256",
      "diffie-hellman-group14-sha1"
    ],
    "server_host_key_algorithms": [
      "ssh-rsa",
      "rsa-sha2-512",
      "rsa-sha2-256",
      "ecdsa-sha2-nistp256",
      "ssh-ed25519"
    ],
    "encryption_algorithms_client_to_server": [
      "[email ",
      "aes128-ctr",
      "aes192-ctr",
      "aes256-ctr",
      "[email ",
      "[email "
    ],
    "encryption_algorithms_server_to_client": [
      "[email ",
      "aes128-ctr",
      "aes192-ctr",
      "aes256-ctr",
      "[email ",
      "[email "
    ],
    "mac_algorithms_client_to_server": [
      "[email ",
      "[email ",
      "[email ",
      "[email ",
      "[email ",
      "[email ",
      "[email ",
      "hmac-sha2-256",
      "hmac-sha2-512",
      "hmac-sha1"
    ],
    "mac_algorithms_server_to_client": [
      "[email ",
      "[email ",
      "[email ",
      "[email ",
      "[email ",
      "[email ",
      "[email ",
      "hmac-sha2-256",
      "hmac-sha2-512",
      "hmac-sha1"
    ],
    "compression_algorithms_client_to_server": [
      "none",
      "[email "
    ],
    "compression_algorithms_server_to_client": [
      "none",
      "[email "
    ],
    "languages_client_to_server": [

    ],
    "languages_server_to_client": [

    ],
    "hostname": "tecmint",
    "auth_methods": [
      "publickey",
      "password"
    ],
    "fingerprints": {
      "rsa": {
        "known_bad": "false",
        "md5": "0e:d0:d7:11:f0:9b:f8:33:9c:ab:26:77:e5:66:9e:f4",
        "sha1": "fc:8d:d5:a1:bf:52:48:a6:7e:f9:a6:2f:af:ca:e2:f0:3a:9a:b7:fa",
        "sha256": "ff:00:b4:a4:40:05:19:27:7c:33:aa:db:a6:96:32:88:8e:bf:05:a1:81:c0:a4:a8:16:01:01:0b:20:37:81:11"
      }
    },
    "start_time": "2017-05-09 10:36:17 +0300",
    "end_time": "2017-05-09 10:36:18 +0300",
    "scan_duration_seconds": 0.221573169,
    "duplicate_host_key_ips": [

    ],
    "compliance": {
      "policy": "Mozilla Modern",
      "compliant": false,
      "recommendations": [
        "Remove these Key Exchange Algos: diffie-hellman-group14-sha1",
        "Remove these MAC Algos: [email , [email , [email , hmac-sha1",
        "Remove these Authentication Methods: password"
      ],
      "references": [
        "https://wiki.mozilla.org/Security/Guidelines/OpenSSH"
      ]
    }
  }
]

O le lo -p lati ṣalaye ibudo ti o yatọ, -L lati jẹki olutawe ati -V lati ṣalaye ipele ọrọ-ọrọ bi a ti han ni isalẹ:

$ ssh_scan -t 192.168.43.198 -p 22222 -L ssh-scan.log -V INFO

Ni afikun, lo faili eto aṣa (aiyipada ni Mozilla Modern) pẹlu -P tabi --policy [FILE] bii bẹ:

$ ssh_scan -t 192.168.43.198 -L ssh-scan.log -V INFO -P /path/to/custom/policy/file

Tẹ eyi lati wo gbogbo awọn aṣayan lilo ssh_scan ati awọn apẹẹrẹ diẹ sii:

$ ssh_scan -h
ssh_scan v0.0.17 (https://github.com/mozilla/ssh_scan)

Usage: ssh_scan [options]
    -t, --target [IP/Range/Hostname] IP/Ranges/Hostname to scan
    -f, --file [FilePath]            File Path of the file containing IP/Range/Hostnames to scan
    -T, --timeout [seconds]          Timeout per connect after which ssh_scan gives up on the host
    -L, --logger [Log File Path]     Enable logger
    -O, --from_json [FilePath]       File to read JSON output from
    -o, --output [FilePath]          File to write JSON output to
    -p, --port [PORT]                Port (Default: 22)
    -P, --policy [FILE]              Custom policy file (Default: Mozilla Modern)
        --threads [NUMBER]           Number of worker threads (Default: 5)
        --fingerprint-db [FILE]      File location of fingerprint database (Default: ./fingerprints.db)
        --suppress-update-status     Do not check for updates
    -u, --unit-test [FILE]           Throw appropriate exit codes based on compliance status
    -V [STD_LOGGING_LEVEL],
        --verbosity
    -v, --version                    Display just version info
    -h, --help                       Show this message

Examples:

  ssh_scan -t 192.168.1.1
  ssh_scan -t server.example.com
  ssh_scan -t ::1
  ssh_scan -t ::1 -T 5
  ssh_scan -f hosts.txt
  ssh_scan -o output.json
  ssh_scan -O output.json -o rescan_output.json
  ssh_scan -t 192.168.1.1 -p 22222
  ssh_scan -t 192.168.1.1 -p 22222 -L output.log -V INFO
  ssh_scan -t 192.168.1.1 -P custom_policy.yml
  ssh_scan -t 192.168.1.1 --unit-test -P custom_policy.yml

Ṣayẹwo diẹ ninu awọn ohun elo to wulo lori olupin SSH:

  1. Wiwọle Wiwọle Ọrọigbaniwọle SSH Lilo SSH Keygen ni Awọn igbesẹ Rọrun 5
  2. Awọn adaṣe 5 ti o dara julọ lati Ni aabo olupin SSH
  3. Ni ihamọ Wiwọle Olumulo SSH si Itọsọna Diẹ Lilo Ile-ẹwọn ti Chrooted
  4. Bii o ṣe le Tunto Awọn isopọ SSH Aṣa lati Ṣedasilẹ Wiwọle Latọna jijin

Fun awọn alaye diẹ sii ṣabẹwo si ibi ipamọ Github ssh_scan: https://github.com/mozilla/ssh_scan

Ninu nkan yii, a fihan ọ bi o ṣe le ṣeto ati lo ssh_scan ni Lainos. Njẹ o mọ ti eyikeyi awọn irinṣẹ iru ni ita? Jẹ ki a mọ nipasẹ fọọmu esi ni isalẹ, pẹlu eyikeyi awọn ero miiran nipa itọsọna yii.