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16.04에 텔넷

tag-icon • tag-icon 16.04 connection localhost telnet
16.04에 텔넷

시스템이 실행 중이고 xenial특정 포트가 열려 있는지 확인해야 하므로 해당 특정 포트에 연결을 시도하기 위해 127.0.0.1설치하기로 결정했습니다 .telnet

I've tried the following:
ron@regDesktopHome:/etc/ssl/certs$ sudo apt-get install telnetd -y
Reading package lists... Done
Building dependency tree       
Reading state information... Done
telnetd is already the newest version (0.17-40).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
ron@regDesktopHome:/etc/ssl/certs$ sudo systemctl status inetd
● xinetd.service - LSB: Starts or stops the xinetd daemon.
   Loaded: loaded (/etc/init.d/xinetd; bad; vendor preset: enabled)
   Active: active (running) since Sun 2019-06-09 18:02:19 PDT; 10min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 2050 ExecStop=/etc/init.d/xinetd stop (code=exited, status=0/SUCCESS)
  Process: 2062 ExecStart=/etc/init.d/xinetd start (code=exited, status=0/SUCCESS)
    Tasks: 1
   Memory: 192.0K
      CPU: 22ms
   CGroup: /system.slice/xinetd.service
           └─2080 /usr/sbin/xinetd -pidfile /run/xinetd.pid -stayalive -inetd_compat -inetd_ipv6

Jun 09 18:02:19 regDesktopHome xinetd[2080]: removing daytime
Jun 09 18:02:19 regDesktopHome xinetd[2080]: removing daytime
Jun 09 18:02:19 regDesktopHome xinetd[2080]: removing discard
Jun 09 18:02:19 regDesktopHome xinetd[2080]: removing discard
Jun 09 18:02:19 regDesktopHome xinetd[2080]: removing echo
Jun 09 18:02:19 regDesktopHome xinetd[2080]: removing echo
Jun 09 18:02:19 regDesktopHome xinetd[2080]: removing time
Jun 09 18:02:19 regDesktopHome xinetd[2080]: removing time
Jun 09 18:02:19 regDesktopHome xinetd[2080]: xinetd Version 2.3.15 started with libwrap loadavg options compiled in.
Jun 09 18:02:19 regDesktopHome xinetd[2080]: Started working: 1 available service
ron@regDesktopHome:/etc/ssl/certs$ telnet 127.0.0.1
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Connection refused
ron@regDesktopHome:/etc/ssl/certs$

무슨 일이에요, 왜 연결할 수 없나요 localhost telnet?

답변1

nmaplsof포트를 확인하는 더 좋은 방법 중 두 가지에 불과합니다 .

포트 1-100을 보려면,

sudo nmap -p1-100 localhost

어떤 프로세스가 포트를 열었는지 확인하려면 80,

lsof -i tcp:80

물론 읽어보세요 man nmap;man lsof.

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