Linux-怎样检察Linux体系是否开通sshd服务

方法1、输入setup命令检察体系服务配置

输入setup命令，选择体系服务，检察sshd服务前面是否有 *号，有*号表现已开启该服务。

服务前面有 *号表现已开启该服务。

参考资料：https://www.bilibili.com/video/BV1dW411M7xL/?p=13
方法2、检察Linux体系是否开通sshd服务：systemctl status sshd.service大概service sshd status

如果该命令返回类似于active (running)的效果，则表现sshd服务已经在运行中。

1. [root@sr var]# systemctl status sshd.service                # 查看Linux系统是否开通sshd服务
2. ● sshd.service - OpenSSH server daemon
3.    Loaded: loaded (/usr/lib/systemd/system/sshd.service; enabled; vendor preset: enabled)
4.    Active: active (running) since Sat 2021-06-05 09:59:11 CST; 2 years 8 months ago
5.      Docs: man:sshd(8)
6.            man:sshd_config(5)
7. Main PID: 1138 (sshd)
8.     Tasks: 1
9.    Memory: 7.8M
10.    CGroup: /system.slice/sshd.service
11.            └─1138 /usr/sbin/sshd -D
13. Mar 01 11:29:45 sr sshd[17514]: Did not receive identification string from XXX.XXX.XXX.XXX port 43992
14. Mar 01 12:01:05 sr sshd[20428]: Did not receive identification string from XXX.XXX.XXX.XXX port 59472
15. Mar 01 12:39:53 sr sshd[23931]: Connection closed by XXX.XXX.XXX.XXX port 52504 [preauth]
16. Mar 01 12:39:55 sr sshd[23934]: Connection closed by XXX.XXX.XXX.XXX port 52518 [preauth]
17. Mar 01 12:39:56 sr sshd[23937]: Connection closed by XXX.XXX.XXX.XXX port 52524 [preauth]
18. Mar 01 13:59:54 sr sshd[31209]: Did not receive identification string from XXX.XXX.XXX.XXX port 64001
19. Mar 01 14:52:51 sr sshd[3621]: Did not receive identification string from XXX.XXX.XXX.XXX port 57980
20. Mar 01 16:01:59 sr sshd[10113]: Accepted password for root from XXX.XXX.XXX.XXX port 18389 ssh2
21. Mar 01 16:42:55 sr sshd[13858]: Connection closed by XXX.XXX.XXX.XXX port 36434 [preauth]
22. Mar 01 16:44:21 sr sshd[14021]: Did not receive identification string from XXX.XXX.XXX.XXX port 10000
23. [root@sr var]# service sshd status                # 查看Linux系统是否开通sshd服务
24. ● sshd.service - OpenSSH server daemon
25.    Loaded: loaded (/usr/lib/systemd/system/sshd.service; enabled; vendor preset: enabled)
26.    Active: active (running) since Sat 2021-06-05 09:59:11 CST; 2 years 8 months ago
27.      Docs: man:sshd(8)
28.            man:sshd_config(5)
29. Main PID: 1138 (sshd)
30.     Tasks: 1
31.    Memory: 7.8M
32.    CGroup: /system.slice/sshd.service
33.            └─1138 /usr/sbin/sshd -D
35. Mar 01 11:29:45 sr sshd[17514]: Did not receive identification string from XXX.XXX.XXX.XXX port 43992
36. Mar 01 12:01:05 sr sshd[20428]: Did not receive identification string from XXX.XXX.XXX.XXX port 59472
37. Mar 01 12:39:53 sr sshd[23931]: Connection closed by XXX.XXX.XXX.XXX port 52504 [preauth]
38. Mar 01 12:39:55 sr sshd[23934]: Connection closed by XXX.XXX.XXX.XXX port 52518 [preauth]
39. Mar 01 12:39:56 sr sshd[23937]: Connection closed by XXX.XXX.XXX.XXX port 52524 [preauth]
40. Mar 01 13:59:54 sr sshd[31209]: Did not receive identification string from XXX.XXX.XXX.XXX port 64001
41. Mar 01 14:52:51 sr sshd[3621]: Did not receive identification string from XXX.XXX.XXX.XXX port 57980
42. Mar 01 16:01:59 sr sshd[10113]: Accepted password for root from XXX.XXX.XXX.XXX port 18389 ssh2
43. Mar 01 16:42:55 sr sshd[13858]: Connection closed by XXX.XXX.XXX.XXX port 36434 [preauth]
44. Mar 01 16:44:21 sr sshd[14021]: Did not receive identification string from XXX.XXX.XXX.XXX port 10000

复制代码

方法3、查抄服务器的22端口是否处于监听状态（SSH默认使用22端口）：netstat -tuln | grep 22大概netstat -an | grep 22

如果SSH服务已启用，而且服务器正在监听22端口，将显示类似于0.0.0.0:22或:::22的信息。

1. [root@sr var]# netstat -tuln | grep 22                # 检查服务器的22端口是否处于监听状态
2. tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN     
3. [root@sr var]# netstat -an | grep 22                # 检查服务器的22端口是否处于监听状态
4. tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN     
5. tcp        0      0 127.0.0.1:60119         127.0.0.1:35322         TIME_WAIT  
6. tcp        0     52 XXX.XXX.XXX.XXX:22        XXX.XXX.XXX.XXX:18389    ESTABLISHED
7. tcp        0      0 XXX.XXX.XXX.XXX:39116     XXX.XXX.XXX.XXX:60101   ESTABLISHED
8. tcp        0      0 XXX.XXX.XXX.XXX:32792     XXX.XXX.XXX.XXX:60101   ESTABLISHED
9. unix  2      [ ACC ]     STREAM     LISTENING     12258    /run/dbus/system_bus_socket
10. unix  2      [ ]         DGRAM                    14221   
11. unix  3      [ ]         STREAM     CONNECTED     21885622

复制代码

方法4、检察是否有sshd进程：ps -ef | grep sshd

1. [root@sr var]# ps -ef | grep sshd                # 查看是否有 sshd 进程
2. root      1138     1  0  2021 ?        00:01:18 /usr/sbin/sshd -D
3. root     10113  1138  0 16:01 ?        00:00:00 sshd: root@pts/0
4. root     18104 10115  0 17:27 pts/0    00:00:00 grep --color=auto sshd

复制代码

免责声明：如果侵犯了您的权益，请联系站长，我们会及时删除侵权内容，谢谢合作！更多信息从访问主页：qidao123.com:ToB企服之家，中国第一个企服评测及商务社交产业平台。