交换机非法连接日志
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问题描述：
交换机中有很多外网试图连接的日志信息，这是怎么回事？难道真有人这么有时间来连接别人设备？还是有什么扫描器或登录器什么的在自动扫描，这么做的目的是什么？
%Jan 10 15:56:32:407 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:56:37:514 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:56:42:421 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:56:47:467 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:56:52:394 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:56:57:356 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:03:846 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:08:785 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:13:757 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:18:725 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:24:424 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:30:489 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:35:426 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:40:322 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:46:318 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:51:230 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:57:56:278 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:01:196 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:06:071 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:11:089 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:17:334 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:22:906 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:27:791 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:32:658 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:37:808 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:42:745 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:47:845 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:53:672 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:58:58:628 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 15:59:03:511 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: system failed to log in from 118.45.222.53.
%Jan 10 16:01:24:250 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:01:24:278 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:01:53:967 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:01:54:077 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:02:22:728 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:02:22:808 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:02:47:451 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:02:50:598 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:03:15:190 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:03:18:488 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:03:37:552 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 38.43.193.23.
%Jan 10 16:03:45:521 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:03:45:596 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:03:51:942 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 38.43.193.23.
%Jan 10 16:04:07:630 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 38.43.193.23.
%Jan 10 16:04:13:475 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:04:13:593 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:04:23:311 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 38.43.193.23.
%Jan 10 16:04:41:890 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:04:41:926 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:04:44:585 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 38.43.193.23.
%Jan 10 16:05:00:608 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 38.43.193.23.
%Jan 10 16:05:09:570 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:05:09:718 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:05:17:621 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 38.43.193.23.
%Jan 10 16:05:28:592 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 38.43.193.23.
%Jan 10 16:05:37:396 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:05:37:565 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 123.175.115.137
%Jan 10 16:05:39:771 2023 XSZX_S5500V2_CORE LOGIN/5/LOGIN_FAILED: shell failed to log in from 38.43.193.23.
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