citadel.dc540.org:23230

Connection Banner:

Kernel 4.18.0-348.2.1.el8_5.x86_64 on an x86_64
Attaching to server...
[localhost:504]
Citadel 927
DC540 Citadel
Amsterdam
 pause    next    stop
 ctrl-s  ctrl-o  ctrl-c

 Number four, know you heard this before...
  SHUT THE FUCK UP!
                 (             )     *                      )
  (  (           )\ )   (   ( /(   (  `           *   )  ( /(
  )\))(   ' (   (()/(   )\  )\())  )\))(   (    ` )  /(  )\())
 ((_)()\ )  )\   /(_))(((_)((_)\  ((_)()\  )\    ( )(_))((_)\
 _(())\_)()((_) (_))  )\___  ((_) (_()((_)((_)  (_(_())   ((_)
 \ \((_)/ /| __|| |  ((/ __|/ _ \ |  \/  || __| |_   _|  / _ \
  \ \/\/ / | _| | |__ | (__| (_) || |\/| || _|    | |   | (_) |
   \_)\_/  |___|(____( \___|\_)_/(|_|  |_||___|   |)| (  \___/

  ( /(   (      )\ ) )\ )  ( /(  )\ )    (      ( /(  )\ )
  )\())  )\    (()/((()/(  )\())(()/(    )\     )\())(()/(
 ((_)\((((_)(   /(_))/(_))((_)\  /(_))((((_)(  ((_)\  /(_))
  _((_))\ _ )\ (_)) (_)) __ ((_)(_))   )\ _ )\  _((_)(_))_
 | || |(_)_\(_)| _ \| _ \\ \ / /| |    (_)_\(_)| \| | |   \
 | __ | / _ \  |  _/|  _/ \ V / | |__   / _ \  | .` | | |) |
<more>

 |_||_|/_/ \_\ |_|  |_|    |_|  |____| /_/ \_\ |_|\_| |___/

 aka Welcome to HappyLand, aka citadel.dc540.org.

 Authorized users only.

 New users should choose a somewhat recognizable nym. Trolls will be chopped up
and used as fertilizer.


Enter your name:

citadel.dc540.org:23230 ⎘

BBS Software

Detected: Citadel

Encoding

• Effective encoding: cp437

• Scanner detected: ascii

Telnet Fingerprint

c1df5709ea295a3f…

This fingerprint is shared by 22 other servers.

Options offered by server: BINARY, ECHO, SGA, STATUS

Options requested from client: ECHO, LFLOW, NAWS, NEW_ENVIRON, TSPEED, TTYPE, XDISPLOC

Data source: c1df5709ea295a3f/e4e372a436cff136.json

The complete JSON record collected during the scan, including Telnet negotiation results and banner data.

{
  "server-probe": {
    "fingerprint": "c1df5709ea295a3f",
    "fingerprint-data": {
      "offered-options": [
        "BINARY",
        "ECHO",
        "SGA",
        "STATUS"
      ],
      "probed-protocol": "server",
      "refused-options": [
        "AARDWOLF",
        "ATCP",
        "CHARSET",
        "COM_PORT",
        "EOR",
        "GMCP",
        "MSDP",
        "MSP",
        "MSSP",
        "MXP",
        "ZMP"
      ],
      "requested-options": [
        "ECHO",
        "LFLOW",
        "NAWS",
        "NEW_ENVIRON",
        "TSPEED",
        "TTYPE",
        "XDISPLOC"
      ],
      "scan-type": "quick"
    },
    "session_data": {
      "banner_after_return": "                                                                                \r\u0000 |_||_|/_/ \\_\\ |_|  |_|    |_|  |____| /_/ \\_\\ |_|\\_| |___/     \r\n                                                                 \r\n aka Welcome to HappyLand, aka citadel.dc540.org.\r\n \r\n Authorized users only.\r\n \r\n New users should choose a somewhat recognizable nym. Trolls will be chopped up\r\nand used as fertilizer. \r\n  \r\n\r\nEnter your name: ",
      "banner_before_return": "\r\nKernel 4.18.0-348.2.1.el8_5.x86_64 on an x86_64\r\nAttaching to server...\r\n[localhost:504]\r\nCitadel 927             \r\nDC540 Citadel\r\nAmsterdam\r\n pause    next    stop\r\n ctrl-s  ctrl-o  ctrl-c\r\n\r\n Number four, know you heard this before...\r\n  SHUT THE FUCK UP! \r\n                 (             )     *                      )   \r\n  (  (           )\\ )   (   ( /(   (  `           *   )  ( /(   \r\n  )\\))(   ' (   (()/(   )\\  )\\())  )\\))(   (    ` )  /(  )\\())  \r\n ((_)()\\ )  )\\   /(_))(((_)((_)\\  ((_)()\\  )\\    ( )(_))((_)\\   \r\n _(())\\_)()((_) (_))  )\\___  ((_) (_()((_)((_)  (_(_())   ((_)  \r\n \\ \\((_)/ /| __|| |  ((/ __|/ _ \\ |  \\/  || __| |_   _|  / _ \\  \r\n  \\ \\/\\/ / | _| | |__ | (__| (_) || |\\/| || _|    | |   | (_) | \r\n   \\_)\\_/  |___|(____( \\___|\\_)_/(|_|  |_||___|   |)| (  \\___/  \r\n  \r\n  ( /(   (      )\\ ) )\\ )  ( /(  )\\ )    (      ( /(  )\\ )      \r\n  )\\())  )\\    (()/((()/(  )\\())(()/(    )\\     )\\())(()/(      \r\n ((_)\\((((_)(   /(_))/(_))((_)\\  /(_))((((_)(  ((_)\\  /(_))     \r\n  _((_))\\ _ )\\ (_)) (_)) __ ((_)(_))   )\\ _ )\\  _((_)(_))_      \r\n | || |(_)_\\(_)| _ \\| _ \\\\ \\ / /| |    (_)_\\(_)| \\| | |   \\     \r\n | __ | / _ \\  |  _/|  _/ \\ V / | |__   / _ \\  | .` | | |) |    \r\n<more>\r\u0000 \b",
      "encoding": "ascii",
      "option_states": {
        "environ_requested": [
          {
            "name": "*",
            "type": "VAR"
          },
          {
            "name": "*",
            "type": "USERVAR"
          }
        ],
        "server_offered": {
          "ECHO": true,
          "SGA": true,
          "STATUS": true
        },
        "server_requested": {
          "ECHO": true,
          "LFLOW": true,
          "NAWS": true,
          "NEW_ENVIRON": true,
          "TSPEED": true,
          "TTYPE": true,
          "XDISPLOC": true
        }
      },
      "scan_type": "quick",
      "timing": {
        "probe": 0.05187106132507324,
        "total": 4.578306674957275
      }
    }
  },
  "sessions": [
    {
      "connected": "2026-02-09T19:30:58.011304+00:00",
      "host": "citadel.dc540.org",
      "ip": "192.236.177.220",
      "port": 23230
    }
  ]
}

Connection Log

Debug-level log of the Telnet negotiation session, showing each IAC (Interpret As Command) exchange between client and server.

DEBUG client.py:863 Fingerprint client: host=citadel.dc540.org port=23230
INFO client_base.py:174 Connected to <Peer 192.236.177.220 23230>
DEBUG stream_writer.py:706 recv IAC DO TTYPE
DEBUG stream_writer.py:1767 handle_do(TTYPE)
DEBUG stream_writer.py:3167 pending_option[WILL + TTYPE] = True
DEBUG stream_writer.py:947 send IAC WILL TTYPE
DEBUG stream_writer.py:3167 pending_option[SB + TTYPE] = True
DEBUG stream_writer.py:3167 local_option[TTYPE] = True
DEBUG stream_writer.py:3167 pending_option[WILL + TTYPE] = False
DEBUG stream_writer.py:706 recv IAC DO TSPEED
DEBUG stream_writer.py:1767 handle_do(TSPEED)
DEBUG stream_writer.py:3167 pending_option[WILL + TSPEED] = True
DEBUG stream_writer.py:947 send IAC WILL TSPEED
DEBUG stream_writer.py:3167 pending_option[SB + TSPEED] = True
DEBUG stream_writer.py:3167 local_option[TSPEED] = True
DEBUG stream_writer.py:3167 pending_option[WILL + TSPEED] = False
DEBUG stream_writer.py:706 recv IAC DO XDISPLOC
DEBUG stream_writer.py:1767 handle_do(XDISPLOC)
DEBUG stream_writer.py:3167 pending_option[WILL + XDISPLOC] = True
DEBUG stream_writer.py:947 send IAC WILL XDISPLOC
DEBUG stream_writer.py:3167 pending_option[SB + XDISPLOC] = True
DEBUG stream_writer.py:3167 local_option[XDISPLOC] = True
DEBUG stream_writer.py:3167 pending_option[WILL + XDISPLOC] = False
DEBUG stream_writer.py:706 recv IAC DO NEW_ENVIRON
DEBUG stream_writer.py:1767 handle_do(NEW_ENVIRON)
DEBUG stream_writer.py:3167 pending_option[WILL + NEW_ENVIRON] = True
DEBUG stream_writer.py:947 send IAC WILL NEW_ENVIRON
DEBUG stream_writer.py:3167 pending_option[SB + NEW_ENVIRON] = True
DEBUG stream_writer.py:3167 local_option[NEW_ENVIRON] = True
DEBUG stream_writer.py:3167 pending_option[WILL + NEW_ENVIRON] = False
DEBUG stream_writer.py:698 begin sub-negotiation SB TSPEED
DEBUG stream_writer.py:685 sub-negotiation cmd TSPEED SE completion byte
DEBUG stream_writer.py:3167 pending_option[SB + TSPEED] = False
DEBUG stream_writer.py:2166 recv TSPEED SEND: b''
DEBUG stream_writer.py:2197 send: IAC SB TSPEED IS b'38400',b'38400' IAC SE
DEBUG stream_writer.py:698 begin sub-negotiation SB XDISPLOC
DEBUG stream_writer.py:685 sub-negotiation cmd XDISPLOC SE completion byte
DEBUG stream_writer.py:3167 pending_option[SB + XDISPLOC] = False
DEBUG stream_writer.py:2210 recv XDISPLOC SEND: b''
DEBUG stream_writer.py:2221 send IAC SB XDISPLOC IS b'' IAC SE
DEBUG stream_writer.py:698 begin sub-negotiation SB NEW_ENVIRON
DEBUG stream_writer.py:685 sub-negotiation cmd NEW_ENVIRON SE completion byte
DEBUG stream_writer.py:3167 pending_option[SB + NEW_ENVIRON] = False
DEBUG stream_writer.py:2282 recv NEW_ENVIRON SEND (all)
DEBUG stream_writer.py:2305 env send: LANG='C', TERM='xterm-256color', LINES=25, COLUMNS=80, COLORTERM=''
DEBUG stream_writer.py:698 begin sub-negotiation SB TTYPE
DEBUG stream_writer.py:685 sub-negotiation cmd TTYPE SE completion byte
DEBUG stream_writer.py:3167 pending_option[SB + TTYPE] = False
DEBUG stream_writer.py:2234 recv TTYPE SEND: b''
DEBUG stream_writer.py:2247 send IAC SB TTYPE IS b'xterm-256color' IAC SE
DEBUG client_base.py:460 negotiation complete after 0.20s.
DEBUG stream_writer.py:706 recv IAC WILL SGA
DEBUG stream_writer.py:722 WILL SGA unsolicited
DEBUG stream_writer.py:1897 handle_will(SGA)
DEBUG stream_writer.py:3167 pending_option[DO + SGA] = True
DEBUG stream_writer.py:947 send IAC DO SGA
DEBUG stream_writer.py:3167 remote_option[SGA] = True
DEBUG stream_writer.py:3167 pending_option[DO + SGA] = False
DEBUG stream_writer.py:706 recv IAC DO ECHO
DEBUG stream_writer.py:1767 handle_do(ECHO)
DEBUG stream_writer.py:3167 local_option[ECHO] = False
DEBUG stream_writer.py:947 send IAC WONT ECHO
DEBUG stream_writer.py:3167 local_option[ECHO] = True
DEBUG stream_writer.py:706 recv IAC DO NAWS
DEBUG stream_writer.py:1767 handle_do(NAWS)
DEBUG stream_writer.py:3167 pending_option[WILL + NAWS] = True
DEBUG stream_writer.py:947 send IAC WILL NAWS
DEBUG stream_writer.py:2339 send IAC SB NAWS (rows=25, cols=80) IAC SE
DEBUG stream_writer.py:3167 local_option[NAWS] = True
DEBUG stream_writer.py:3167 pending_option[WILL + NAWS] = False
DEBUG stream_writer.py:706 recv IAC WILL STATUS
DEBUG stream_writer.py:722 WILL STATUS unsolicited
DEBUG stream_writer.py:1897 handle_will(STATUS)
DEBUG stream_writer.py:3167 remote_option[STATUS] = True
DEBUG stream_writer.py:1038 send IAC SB STATUS SEND IAC SE
DEBUG stream_writer.py:3167 pending_option[SB + STATUS] = True
DEBUG stream_writer.py:706 recv IAC DO LFLOW
DEBUG stream_writer.py:1767 handle_do(LFLOW)
DEBUG stream_writer.py:3167 pending_option[WILL + LFLOW] = True
DEBUG stream_writer.py:947 send IAC WILL LFLOW
DEBUG stream_writer.py:3167 pending_option[SB + LFLOW] = True
DEBUG stream_writer.py:3167 local_option[LFLOW] = True
DEBUG stream_writer.py:3167 pending_option[WILL + LFLOW] = False
DEBUG stream_writer.py:706 recv IAC WILL ECHO
DEBUG stream_writer.py:722 WILL ECHO unsolicited
DEBUG stream_writer.py:1897 handle_will(ECHO)
DEBUG stream_writer.py:3167 pending_option[DO + ECHO] = True
DEBUG stream_writer.py:947 send IAC DO ECHO
DEBUG stream_writer.py:3167 remote_option[ECHO] = True
DEBUG stream_writer.py:3167 pending_option[DO + ECHO] = False
DEBUG stream_writer.py:698 begin sub-negotiation SB LFLOW
DEBUG stream_writer.py:685 sub-negotiation cmd LFLOW SE completion byte
DEBUG stream_writer.py:3167 pending_option[SB + LFLOW] = False
DEBUG stream_writer.py:2373 LFLOW (toggle-flow-control) OFF
DEBUG stream_writer.py:3167 pending_option[DO + BINARY] = True
DEBUG stream_writer.py:947 send IAC DO BINARY
DEBUG stream_writer.py:3167 pending_option[DO + CHARSET] = True
DEBUG stream_writer.py:947 send IAC DO CHARSET
DEBUG stream_writer.py:3167 pending_option[DO + EOR] = True
DEBUG stream_writer.py:947 send IAC DO EOR
DEBUG stream_writer.py:3167 pending_option[DO + COM_PORT_OPTION] = True
DEBUG stream_writer.py:947 send IAC DO COM_PORT_OPTION
DEBUG stream_writer.py:3167 pending_option[DO + GMCP] = True
DEBUG stream_writer.py:947 send IAC DO GMCP
DEBUG stream_writer.py:3167 pending_option[DO + MSDP] = True
DEBUG stream_writer.py:947 send IAC DO MSDP
DEBUG stream_writer.py:3167 pending_option[DO + MSSP] = True
DEBUG stream_writer.py:947 send IAC DO MSSP
DEBUG stream_writer.py:3167 pending_option[DO + MSP] = True
DEBUG stream_writer.py:947 send IAC DO MSP
DEBUG stream_writer.py:3167 pending_option[DO + MXP] = True
DEBUG stream_writer.py:947 send IAC DO MXP
DEBUG stream_writer.py:3167 pending_option[DO + ZMP] = True
DEBUG stream_writer.py:947 send IAC DO ZMP
DEBUG stream_writer.py:3167 pending_option[DO + AARDWOLF] = True
DEBUG stream_writer.py:947 send IAC DO AARDWOLF
DEBUG stream_writer.py:3167 pending_option[DO + ATCP] = True
DEBUG stream_writer.py:947 send IAC DO ATCP
DEBUG stream_writer.py:706 recv IAC WILL BINARY
DEBUG stream_writer.py:1897 handle_will(BINARY)
DEBUG stream_writer.py:921 skip DO BINARY; pending_option = True
DEBUG stream_writer.py:3167 remote_option[BINARY] = True
DEBUG stream_writer.py:3167 pending_option[DO + BINARY] = False
DEBUG stream_writer.py:706 recv IAC WONT CHARSET
DEBUG stream_writer.py:2022 handle_wont(CHARSET)
DEBUG stream_writer.py:3167 remote_option[CHARSET] = False
DEBUG stream_writer.py:3167 pending_option[DO + CHARSET] = False
DEBUG stream_writer.py:706 recv IAC WONT EOR
DEBUG stream_writer.py:2022 handle_wont(EOR)
DEBUG stream_writer.py:3167 remote_option[EOR] = False
DEBUG stream_writer.py:3167 pending_option[DO + EOR] = False
DEBUG stream_writer.py:706 recv IAC WONT COM_PORT_OPTION
DEBUG stream_writer.py:2022 handle_wont(COM_PORT_OPTION)
DEBUG stream_writer.py:3167 remote_option[COM_PORT_OPTION] = False
DEBUG stream_writer.py:3167 pending_option[DO + COM_PORT_OPTION] = False
DEBUG stream_writer.py:706 recv IAC WONT GMCP
DEBUG stream_writer.py:2022 handle_wont(GMCP)
DEBUG stream_writer.py:3167 remote_option[GMCP] = False
DEBUG stream_writer.py:3167 pending_option[DO + GMCP] = False
DEBUG stream_writer.py:706 recv IAC WONT MSDP
DEBUG stream_writer.py:2022 handle_wont(MSDP)
DEBUG stream_writer.py:3167 remote_option[MSDP] = False
DEBUG stream_writer.py:3167 pending_option[DO + MSDP] = False
DEBUG stream_writer.py:706 recv IAC WONT MSSP
DEBUG stream_writer.py:2022 handle_wont(MSSP)
DEBUG stream_writer.py:3167 remote_option[MSSP] = False
DEBUG stream_writer.py:3167 pending_option[DO + MSSP] = False
DEBUG stream_writer.py:706 recv IAC WONT MSP
DEBUG stream_writer.py:2022 handle_wont(MSP)
DEBUG stream_writer.py:3167 remote_option[MSP] = False
DEBUG stream_writer.py:3167 pending_option[DO + MSP] = False
DEBUG stream_writer.py:706 recv IAC WONT MXP
DEBUG stream_writer.py:2022 handle_wont(MXP)
DEBUG stream_writer.py:3167 remote_option[MXP] = False
DEBUG stream_writer.py:3167 pending_option[DO + MXP] = False
DEBUG stream_writer.py:706 recv IAC WONT ZMP
DEBUG stream_writer.py:2022 handle_wont(ZMP)
DEBUG stream_writer.py:3167 remote_option[ZMP] = False
DEBUG stream_writer.py:3167 pending_option[DO + ZMP] = False
DEBUG stream_writer.py:706 recv IAC WONT AARDWOLF
DEBUG stream_writer.py:2022 handle_wont(AARDWOLF)
DEBUG stream_writer.py:3167 remote_option[AARDWOLF] = False
DEBUG stream_writer.py:3167 pending_option[DO + AARDWOLF] = False
DEBUG stream_writer.py:706 recv IAC WONT ATCP
DEBUG stream_writer.py:2022 handle_wont(ATCP)
DEBUG stream_writer.py:3167 remote_option[ATCP] = False
DEBUG stream_writer.py:3167 pending_option[DO + ATCP] = False
INFO fingerprinting.py:746 connection for server fingerprint c1df5709ea295a3f
INFO client_base.py:105 Connection closed to <Peer 192.236.177.220 23230>

Generated by telnetlib3-fingerprint

telnetlib3-fingerprint --loglevel=debug citadel.dc540.org 23230