无法使用ssh连接,但打开的ssh客户端仍然可以工作

另外,在同一个服务器上,端口8000上有一个http服务器,我可以从打开的ssh客户机(使用lynx)连接到它 http://localhost:8000 )但不是我的电脑。

这是我从traceroute得到的:

traceroute to 104.248.40.179 (104.248.40.179), 30 hops max, 60 byte packets
 1  10.0.0.138 (10.0.0.138)  2.025 ms  2.205 ms  2.375 ms
 2  10.17.100.11 (10.17.100.11)  30.228 ms  30.332 ms  30.367 ms
 3  * * *
 4  10.17.110.82 (10.17.110.82)  26.699 ms 10.17.110.66 (10.17.110.66)  27.771 ms 10.17.110.90 (10.17.110.90)  28.701 ms
 5  10.17.111.11 (10.17.111.11)  29.930 ms  31.098 ms  32.761 ms
 6  10.17.111.10 (10.17.111.10)  35.222 ms  18.911 ms  17.638 ms
 7  * * *
 8  10.17.102.1 (10.17.102.1)  22.009 ms 10.17.101.1 (10.17.101.1)  23.693 ms 10.17.102.1 (10.17.102.1)  24.964 ms
 9  BB-191-9.018.net.il (31.210.191.9)  77.354 ms BB-191-17.018.net.il (31.210.191.17)  164.830 ms  164.866 ms
10  te0-0-0-24.rcr22.fra06.atlas.cogentco.com (149.14.208.17)  84.489 ms te0-0-0-34.rcr22.fra06.atlas.cogentco.com (149.14.208.33)  84.592 ms te0-0-0-24.rcr22.fra06.atlas.cogentco.com (149.14.208.17)  85.927 ms
11  be2845.ccr41.fra03.atlas.cogentco.com (154.54.56.189)  69.778 ms  69.342 ms be2846.ccr42.fra03.atlas.cogentco.com (154.54.37.29)  69.338 ms
12  be3187.agr41.fra03.atlas.cogentco.com (130.117.1.117)  70.291 ms be3186.agr41.fra03.atlas.cogentco.com (130.117.0.2)  69.607 ms be3187.agr41.fra03.atlas.cogentco.com (130.117.1.117)  70.673 ms
13  telia.fra03.atlas.cogentco.com (130.117.14.198)  71.609 ms  70.932 ms  80.428 ms
14  digitalocean-ic-328177-ffm-b4.c.telia.net (80.239.128.21)  86.646 ms  85.009 ms  85.417 ms
15  138.197.250.173 (138.197.250.173)  93.542 ms * *
16  * * *
17  * * *
18  * * *
19  * * *
20  * * *
21  * * *
22  * * *
23  * * *
24  * * *
25  * * *
26  * * *
27  * * *
28  * * *
29  * * *
30  * * *

30号线之前的这些三星线路是什么意思?我怎样才能解决这个问题呢?

编辑: sudo service ssh status 在打开的ssh客户端上显示:

● ssh.service - OpenBSD Secure Shell server
   Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
   Active: active (running) since Mon 2019-03-11 19:02:48 UTC; 1h 58min ago
  Process: 9819 ExecStartPre=/usr/sbin/sshd -t (code=exited, status=0/SUCCESS)
 Main PID: 9826 (sshd)
    Tasks: 1 (limit: 4915)
   CGroup: /system.slice/ssh.service
           └─9826 /usr/sbin/sshd -D

Mar 11 19:02:48 badkan2 systemd[1]: Starting OpenBSD Secure Shell server...
Mar 11 19:02:48 badkan2 sshd[9826]: Server listening on 0.0.0.0 port 22.
Mar 11 19:02:48 badkan2 sshd[9826]: Server listening on :: port 22.
Mar 11 19:02:48 badkan2 systemd[1]: Started OpenBSD Secure Shell server.
Mar 11 19:10:49 badkan2 sshd[19466]: Did not receive identification string from 104.248.40.179 port 55