bbs.cs.nthu.edu.tw:23
Connection Banner:
Server URLs
- Telnet: bbs.cs.nthu.edu.tw:23
- FTP: ftp://bbs.cs.nthu.edu.tw
- NNTP: nntp://bbs.cs.nthu.edu.tw
- Website: bbs.cs.nthu.edu.tw
Server Location: 🇹🇼 Taiwan (GeoIP)
Listing
BBS Name: Tsinghua Univ. (Fengqiao Stn.) (from listing)
Listed Location: Hsinchu, , Taiwan
BBS Software
Reported: MapleBBS
Encoding
Effective encoding: big5bbs
Override: big5bbs (from bbslist.txt)
Scanner detected: big5bbs
Telnet Fingerprint
This fingerprint is shared by 24 other servers.
Options offered by server: ECHO, SGA
Options requested from client: NAWS, TTYPE
The complete JSON record collected during the scan, including Telnet negotiation results and banner data.
Show JSON
{
"server-probe": {
"fingerprint": "ab280cfd611c45da",
"fingerprint-data": {
"offered-options": [
"ECHO",
"SGA"
],
"probed-protocol": "server",
"refused-options": [
"AARDWOLF",
"ATCP",
"BINARY",
"CHARSET",
"COM_PORT",
"EOR",
"GMCP",
"MCCP2",
"MCCP3",
"MSDP",
"MSP",
"MSSP",
"MXP",
"STATUS",
"ZMP"
],
"requested-options": [
"NAWS",
"TTYPE"
],
"scan-type": "quick"
},
"session_data": {
"banner_after_return": "\u001b[K\n\r [\u60a8\u7684\u5e33\u865f] \u001b[7m \u001b[m\u001b[K\u001b[24;15H",
"banner_before_return": "\u001b[;H\u001b[2J\u001b[1;40m\u6b61\u8fce\u5149\u81e8\u3010\u001b[33m \u6953\u6a4b\u9a5b\u7ad9 \u001b[37m\u3011140.114.87.5 \u2609 \u6e05\u5927\u8cc7\u5de5 \u2609\u7dda\u4e0a\u6709 [\u001b[33m7\u001b[37m] \u7247\u6953\u8449 \u001b[m\n\r\u001b[m \u001b[m\n\r \u001b[30;47m\u258f \u001b[37m \u001b[m\u258f \u001b[31;43m\u2584\u001b[32m\u2584\u2584\u001b[34m\u2584\u001b[m \u001b[1;30mtelnet://bbs.cs.nthu.edu.tw\u001b[m\n\r \u001b[30;47m\u258e \u001b[37m \u001b[m\u258e \u001b[1m\u2582\u00f3\u001b[mf\u2587 \u001b[34;41m \u001b[42m \u001b[44m \u001b[m\n\r \u001b[30;47m\u258f \u001b[37m \u001b[m\u258a \u001b[1m\u25e2\u001b[47m\u25e4\u001b[;30;47m \u001b[37m \u001b[30m\u25e5\u001b[m \u001b[34;41m \u001b[42m \u001b[44m \u001b[36;47m\u3000\u001b[30m \u250c\u2500\u2510\u001b[36m\u3000\u3000\u001b[30m \u5929 \u001b[46m \u001b[m\n\r \u001b[30;47m\u258d\u001b[37m \u001b[m\u258a \u001b[30;47m\u25e4 \u001b[m \u001b[34;41m \u001b[42m \u001b[44m \u001b[30;47m \u2502\u252c\u2502 \u6728 \u53e3 \u001b[46m \u001b[m\n\r \u001b[30;47m\u258d\u001b[37m \u001b[m\u258c \u001b[30;47m\u25e4 \u25e2\u001b[m \u001b[34;41m \u001b[42m \u001b[44m \u001b[30;47m \u6728\u2502\u866b\u2570 \u250c\u2500\u2510 \u001b[46m \u001b[m\n\r\u001b[30m \u001b[47m\u258c \u001b[m\u258a\u001b[30m \u001b[m\u25e2\u001b[47m \u001b[30m \u2584\u2586\u2587\u001b[m \u001b[36;43m\u00f3\u001b[37m\u2310\u001b[30m \u001b[37m\u25e2\u001b[30;47m \u256f \u2514\u53e3\u2518 \u001b[46m \u001b[m\n\r \u001b[30m \u001b[m \u001b[30;47m\u25e4 \u25e5\u001b[m \u001b[1;32m\u00fa\u001b[;32;40m\u255b\u001b[1;37m \u001b[m \u001b[30;43m\u00f3\u001b[44m\u5cb7\u001b[43m\u00bf\u001b[1;31;40m\u958b\u677f\u8acb\u6d3dIAS_SYSOP\u677f\u3002\u001b[m\n\r \u001b[30m \u001b[m \u001b[30;47m\u2589 \u001b[m\u258f \u001b[30;41m\u039e\u001b[m\n\r \u001b[30;47m\u258a\u001b[37m \u001b[m\u258d \u001b[30m\u00f3\u001b[31m\u00ac\u001b[30;41m\u00f3\u001b[40m\u00bf\u001b[1;37m\u6953\u6a4b\u85dd\u6587\u9928\u6b63\u5728\u62db\u52df\u559c\u6b61\u5beb\u4f5c\u548c\u505a\u7f8e\u5de5\u7684\u4f60\u3002\u001b[m\n\r \u001b[30m \u001b[m \u001b[30;47m\u258b \u001b[m\u258b \u001b[1;32m\u00fa\u001b[;32;40m\u255b\u001b[m\n\r \u001b[1;30mw\u001b[;30;40m \u001b[m \u001b[30;47m\u2589 \u001b[m\u258e \u001b[30;41m\u039e\u001b[m \u001b[36m\u512a\u826f\u7684\u5275\u4f5c\u74b0\u5883\u548c\u670d\u52d9\uff0c\u001b[m\n\r \u001b[1;30mf\u001b[;30;40m \u001b[m \u001b[30;47m\u25e3 \u25e2\u001b[m \u001b[30m\u00f3\u001b[31m\u00ac\u001b[30;41m\u00f3\u001b[40m\u00bf\u001b[36m\u8b93\u4f60\u64c1\u6709\u7f8e\u7f8e\u7684\u7248\u9762\u548c\u7f8e\u5de5\u5ee3\u544a\u3002\u001b[m\n\r \u001b[30m \u001b[1my\u001b[;30;40m \u001b[m \u00f3\u001b[47m\u00bf\u001b[30m \u001b[37m\u00f3\u001b[30m\u00ac\u001b[m \u001b[1;32m\u00fa\u001b[;32;40m\u255b\u001b[m\n\r \u001b[30m \u001b[1mo\u001b[m \u001b[30;47m \u001b[m \u001b[30;41m\u039e\u001b[m \u001b[1;36m\u5b8c\u6574\u7684\u6536\u9304\u60a8\u559c\u611b\u4f5c\u5bb6\u7684\u4f5c\u54c1\u3002\u001b[m\n\r \u001b[30m \u001b[1my\u001b[m \u001b[30m\u00f3\u001b[47m\u00bd \u00f3\u001b[40m\u00ac\u001b[m \u001b[30m\u00f3\u001b[31m\u00ac\u001b[30;41m\u00f3\u001b[40m\u00bf\u001b[m \u001b[1;32m\u00fa\u001b[;32;40m\u255b\u001b[m \u001b[1;32m\u00fa\u001b[;32;40m\u255b\u001b[m \u001b[1;32m\u00fa\u001b[;32;40m\u255b\u001b[m \u001b[1;32m\u00fa\u001b[;32;40m\u255b\u001b[m \u001b[1;32m\u00fa\u001b[;32;40m\u255b\u001b[m \u001b[1;32m\u00fa\u001b[;32;40m\u255b\u001b[m\n\r \u001b[30m \u001b[1;32m\u3003\u3003\u001b[m \u001b[30;47m \u256d \u256e \u001b[m \u001b[1;32m\u3003\u001b[m \u001b[1;32m\u3003\u001b[m \u001b[1;32m\u3003\u001b[m \u001b[1;32m\u3003\u001b[;30;41m\u039e\u001b[m \u001b[30;41m\u039e\u001b[m \u001b[30;41m\u039e\u001b[m \u001b[30;41m\u039e\u001b[m \u001b[30;41m\u039e\u001b[m \u001b[30;41m\u039e\u001b[m \u001b[1;32m\u00ed\u001b[;32;40m\u2593\u001b[m\n\r \u001b[32m \u001b[31m \u001b[32;42m \u001b[47m\u25e3\u001b[30m \uff08 \uff09 \u001b[32m\u25e2\u001b[42m \u001b[31m \u001b[m\n\r\u001b[m\u001b[23;1H [\u60a8\u7684\u5e33\u865f] \u001b[7m \u001b[m\n\r \u203b \u53c3\u89c0\u5e33\u865f\uff1a\u001b[1;32mguest\u001b[m \u7533\u8acb\u65b0\u5e33\u865f\uff1a\u001b[1;31mnew\u001b[m\u001b[23;15H",
"dsr_replies": 0,
"dsr_requests": 0,
"encoding": "big5bbs",
"option_states": {
"server_offered": {
"ECHO": true,
"SGA": true
},
"server_requested": {
"NAWS": true,
"TTYPE": true
}
},
"scan_type": "quick",
"timing": {
"probe": 0.5071594715118408,
"total": 21.166133642196655
}
}
},
"sessions": [
{
"connected": "2026-03-07T04:23:02.154195+00:00",
"host": "bbs.cs.nthu.edu.tw",
"ip": "140.114.87.5",
"port": 23
},
{
"connected": "2026-04-05T19:09:53.499330+00:00",
"host": "bbs.cs.nthu.edu.tw",
"ip": "140.114.87.5",
"port": 23
},
{
"connected": "2026-04-07T06:06:54.990143+00:00",
"host": "bbs.cs.nthu.edu.tw",
"ip": "140.114.87.5",
"port": 23
},
{
"connected": "2026-04-10T00:32:21.275820+00:00",
"host": "bbs.cs.nthu.edu.tw",
"ip": "140.114.87.5",
"port": 23
},
{
"connected": "2026-04-10T01:50:57.096931+00:00",
"host": "bbs.cs.nthu.edu.tw",
"ip": "140.114.87.5",
"port": 23
}
]
}
Connection Log
Debug-level log of the Telnet negotiation session, showing each IAC (Interpret As Command) exchange between client and server.
Generated by telnetlib3-fingerprint
telnetlib3-fingerprint --loglevel=debug bbs.cs.nthu.edu.tw 23
Show Logfile
DEBUG client.py:1193 Fingerprint client: host=bbs.cs.nthu.edu.tw port=23
INFO client_base.py:188 Connected to <Peer 140.114.87.5 23>
DEBUG stream_writer.py:3384 pending_option[WILL + ATCP] = True
DEBUG stream_writer.py:1024 send IAC WILL ATCP
DEBUG stream_writer.py:3384 pending_option[WILL + MXP] = True
DEBUG stream_writer.py:1024 send IAC WILL MXP
DEBUG stream_writer.py:3384 pending_option[WILL + MCCP2_COMPRESS] = True
DEBUG stream_writer.py:1024 send IAC WILL MCCP2_COMPRESS
DEBUG stream_writer.py:3384 pending_option[WILL + MCCP3_COMPRESS] = True
DEBUG stream_writer.py:1024 send IAC WILL MCCP3_COMPRESS
DEBUG stream_writer.py:3384 pending_option[WILL + MSDP] = True
DEBUG stream_writer.py:1024 send IAC WILL MSDP
DEBUG stream_writer.py:3384 pending_option[WILL + MSSP] = True
DEBUG stream_writer.py:1024 send IAC WILL MSSP
DEBUG stream_writer.py:3384 pending_option[WILL + ZMP] = True
DEBUG stream_writer.py:1024 send IAC WILL ZMP
DEBUG stream_writer.py:3384 pending_option[WILL + GMCP] = True
DEBUG stream_writer.py:1024 send IAC WILL GMCP
DEBUG stream_writer.py:3384 pending_option[WILL + MSP] = True
DEBUG stream_writer.py:1024 send IAC WILL MSP
DEBUG stream_writer.py:3384 pending_option[WILL + AARDWOLF] = True
DEBUG stream_writer.py:1024 send IAC WILL AARDWOLF
DEBUG stream_writer.py:3384 pending_option[DO + ATCP] = True
DEBUG stream_writer.py:1024 send IAC DO ATCP
DEBUG stream_writer.py:3384 pending_option[DO + MXP] = True
DEBUG stream_writer.py:1024 send IAC DO MXP
DEBUG stream_writer.py:3384 pending_option[DO + MCCP2_COMPRESS] = True
DEBUG stream_writer.py:1024 send IAC DO MCCP2_COMPRESS
DEBUG stream_writer.py:3384 pending_option[DO + MCCP3_COMPRESS] = True
DEBUG stream_writer.py:1024 send IAC DO MCCP3_COMPRESS
DEBUG stream_writer.py:3384 pending_option[DO + MSDP] = True
DEBUG stream_writer.py:1024 send IAC DO MSDP
DEBUG stream_writer.py:3384 pending_option[DO + MSSP] = True
DEBUG stream_writer.py:1024 send IAC DO MSSP
DEBUG stream_writer.py:3384 pending_option[DO + ZMP] = True
DEBUG stream_writer.py:1024 send IAC DO ZMP
DEBUG stream_writer.py:3384 pending_option[DO + GMCP] = True
DEBUG stream_writer.py:1024 send IAC DO GMCP
DEBUG stream_writer.py:3384 pending_option[DO + MSP] = True
DEBUG stream_writer.py:1024 send IAC DO MSP
DEBUG stream_writer.py:3384 pending_option[DO + AARDWOLF] = True
DEBUG stream_writer.py:1024 send IAC DO AARDWOLF
DEBUG stream_writer.py:773 recv IAC DO TTYPE
DEBUG stream_writer.py:1887 handle_do(TTYPE)
DEBUG stream_writer.py:3384 pending_option[WILL + TTYPE] = True
DEBUG stream_writer.py:1024 send IAC WILL TTYPE
DEBUG stream_writer.py:3384 pending_option[SB + TTYPE] = True
DEBUG stream_writer.py:3384 local_option[TTYPE] = True
DEBUG stream_writer.py:3384 pending_option[WILL + TTYPE] = False
DEBUG stream_writer.py:767 begin sub-negotiation SB TTYPE
DEBUG stream_writer.py:754 sub-negotiation cmd TTYPE SE completion byte
DEBUG stream_writer.py:3384 pending_option[SB + TTYPE] = False
DEBUG stream_writer.py:2404 recv TTYPE SEND: b''
DEBUG stream_writer.py:2416 send IAC SB TTYPE IS b'xterm-256color' IAC SE
DEBUG stream_writer.py:773 recv IAC WILL ECHO
DEBUG stream_writer.py:789 WILL ECHO unsolicited
DEBUG stream_writer.py:2045 handle_will(ECHO)
DEBUG stream_writer.py:3384 pending_option[DO + ECHO] = True
DEBUG stream_writer.py:1024 send IAC DO ECHO
DEBUG stream_writer.py:3384 remote_option[ECHO] = True
DEBUG stream_writer.py:3384 pending_option[DO + ECHO] = False
DEBUG stream_writer.py:773 recv IAC WILL SGA
DEBUG stream_writer.py:789 WILL SGA unsolicited
DEBUG stream_writer.py:2045 handle_will(SGA)
DEBUG stream_writer.py:3384 pending_option[DO + SGA] = True
DEBUG stream_writer.py:1024 send IAC DO SGA
DEBUG stream_writer.py:3384 remote_option[SGA] = True
DEBUG stream_writer.py:3384 pending_option[DO + SGA] = False
DEBUG stream_writer.py:773 recv IAC DO NAWS
DEBUG stream_writer.py:1887 handle_do(NAWS)
DEBUG stream_writer.py:3384 pending_option[WILL + NAWS] = True
DEBUG stream_writer.py:1024 send IAC WILL NAWS
DEBUG stream_writer.py:2507 send IAC SB NAWS (rows=25, cols=80) IAC SE
DEBUG stream_writer.py:3384 local_option[NAWS] = True
DEBUG stream_writer.py:3384 pending_option[WILL + NAWS] = False
DEBUG client_base.py:513 negotiation failed after 4.00s.
DEBUG client_base.py:519 failed-reply: 'WILL ATCP, WILL MXP, WILL MCCP2_COMPRESS, WILL MCCP3_COMPRESS, WILL MSDP, WILL MSSP, WILL
ZMP, WILL GMCP, WILL MSP, WILL AARDWOLF, DO ATCP, DO MXP, DO MCCP2_COMPRESS, DO MCCP3_COMPRESS, DO MSDP, DO MSSP, DO ZMP, DO
GMCP, DO MSP, DO AARDWOLF'
DEBUG stream_writer.py:3384 pending_option[DO + BINARY] = True
DEBUG stream_writer.py:1024 send IAC DO BINARY
DEBUG stream_writer.py:3384 pending_option[DO + STATUS] = True
DEBUG stream_writer.py:1024 send IAC DO STATUS
DEBUG stream_writer.py:3384 pending_option[DO + CHARSET] = True
DEBUG stream_writer.py:1024 send IAC DO CHARSET
DEBUG stream_writer.py:3384 pending_option[DO + EOR] = True
DEBUG stream_writer.py:1024 send IAC DO EOR
DEBUG stream_writer.py:3384 pending_option[DO + COM_PORT_OPTION] = True
DEBUG stream_writer.py:1024 send IAC DO COM_PORT_OPTION
DEBUG stream_writer.py:998 skip DO MCCP2_COMPRESS; pending_option = True
DEBUG stream_writer.py:998 skip DO MCCP3_COMPRESS; pending_option = True
DEBUG stream_writer.py:998 skip DO GMCP; pending_option = True
DEBUG stream_writer.py:998 skip DO MSDP; pending_option = True
DEBUG stream_writer.py:998 skip DO MSSP; pending_option = True
DEBUG stream_writer.py:998 skip DO MSP; pending_option = True
DEBUG stream_writer.py:998 skip DO MXP; pending_option = True
DEBUG stream_writer.py:998 skip DO ZMP; pending_option = True
DEBUG stream_writer.py:998 skip DO AARDWOLF; pending_option = True
DEBUG stream_writer.py:998 skip DO ATCP; pending_option = True
DEBUG fingerprinting.py:844 connection for server fingerprint ab280cfd611c45da
INFO client_base.py:120 Connection closed to <Peer 140.114.87.5 23>