There were 39118 failed login attempts since the last successful login.

[jiezhi]

之前撸的腾讯云 SSH 登录时返回的消息，而且现在起码要 15s 才能连上，什么问题呢，改端口号能避免么？

[jiezhi]

Last failed login: Thu Apr 12 13:07:26 CST 2018 from 118.26.23.225 on ssh:notty

您查询的 IP：118.26.23.225

所在地理位置：北京市 云方舟

GeoIP: Beijing, China

Beijing CNISP Technology Co.

什么鬼？

[jiezhi]

sshd:103.99.0.124:deny
sshd:111.73.46.196:deny
sshd:118.24.28.214:deny
sshd:118.25.6.127:deny
sshd:118.26.23.225:deny
sshd:118.89.193.12:deny
sshd:124.68.10.20:deny
sshd:139.219.102.177:deny
sshd:193.201.224.232:deny
sshd:222.82.245.76:deny
sshd:42.7.26.60:deny
sshd:51.15.86.197:deny
sshd:58.242.83.35:deny
sshd:103.253.146.170:deny
sshd:103.99.0.123:deny
sshd:109.248.9.9:deny
sshd:111.85.219.209:deny
sshd:118.24.159.138:deny
sshd:120.211.38.67:deny
sshd:121.33.248.149:deny
sshd:14.141.148.208:deny
sshd:167.99.202.21:deny
sshd:173.199.71.145:deny
sshd:181.214.87.4:deny
sshd:185.189.58.212:deny
sshd:199.247.21.43:deny
sshd:212.237.41.18:deny
sshd:218.65.30.25:deny
sshd:218.9.25.103:deny
sshd:222.174.255.14:deny
sshd:40.125.211.10:deny
sshd:42.7.26.16:deny
sshd:5.188.10.156:deny
sshd:5.188.10.182:deny

跑个脚本 b 了这些 ip 后，登录速度瞬间回来了

[liuxu]

换端口保平安

[jiezhi]

@liuxu #3 端口现在也换了，不过看记录其它端口也被扫描了，所以就定时跑脚本拉黑了

[jasonyang9]

改端口，fail2ban，了解一下。按理应该彻底关闭密码登录，仅用 RSA key

[jasonyang9]

https://plusbryan.com/my-first-5-minutes-on-a-server-or-essential-security-for-linux-servers

[d0m2o08]

不想用 key 就用 fail2ban

[tencentcloud]

楼主好，如您遇到腾讯云相关问题，欢迎登录腾讯云控制台提交工单反馈，我们会及时为您排查解决哦。感谢您的支持。