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标题: sshguard-pf 无法阻挡ssh攻击，不知何解 [打印本页]
作者: f5b    时间: 2010-12-26 11:03
标题: sshguard-pf 无法阻挡ssh攻击，不知何解
安装配置sshguard
cd /usr/ports/security/sshguard-pf
make install clean
vi etc/syslog.conf
添加
  1. auth.info;authpriv.info     |exec /usr/local/sbin/sshguard
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服务器有两个网卡，so
vi /etc/pf.conf  内容如下
  1. table <sshguard> persist

  3. set skip on lo

  5. scrub in

  7. block in quick on egress proto tcp from <sshguard> to any port 22 label "ssh bruteforce"
  8. pass in
  9. pass out
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/etc/rc.d/syslog reload


top  found

  2. 7907 root        2  44    0  7184K  1612K nanslp  4   0:00  0.00% sshguard
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tail -f /var/log/auth.log
测试ssh攻击，看起来sshguard没有发挥作用

  2. Dec 26 10:29:47 b sshd[1077]: Server listening on 0.0.0.0 port 22.
  3. Dec 26 10:29:47 b sshguard[1079]: Started successfully [(a,p,s)=(4, 420, 1200)],now ready to scan.
  4. Dec 26 10:32:18 b sshd[1202]: error: PAM: authentication error for illegal user a from 10.0.0.88
  5. Dec 26 10:32:18 b sshd[1202]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49700 ssh2
  6. Dec 26 10:32:18 b sshd[1202]: error: PAM: authentication error for illegal user a from 10.0.0.88
  7. Dec 26 10:32:18 b sshd[1202]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49700 ssh2
  8. Dec 26 10:32:23 b sshd[1206]: Invalid user a from 10.0.0.88
  9. Dec 26 10:32:23 b sshd[1206]: error: PAM: authentication error for illegal user a from 10.0.0.88
  10. Dec 26 10:32:23 b sshd[1206]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49701 ssh2
  11. Dec 26 10:32:23 b sshd[1206]: error: PAM: authentication error for illegal user a from 10.0.0.88
  12. Dec 26 10:32:23 b sshd[1206]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49701 ssh2
  13. Dec 26 10:32:29 b sshd[1210]: Invalid user a from 10.0.0.88
  14. Dec 26 10:32:29 b sshd[1210]: error: PAM: authentication error for illegal user a from 10.0.0.88
  15. Dec 26 10:32:29 b sshd[1210]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49702 ssh2
  16. Dec 26 10:32:29 b sshd[1210]: error: PAM: authentication error for illegal user a from 10.0.0.88
  17. Dec 26 10:32:29 b sshd[1210]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49702 ssh2
  18. Dec 26 10:32:34 b sshd[1214]: Invalid user a from 10.0.0.88
  19. Dec 26 10:32:34 b sshd[1214]: error: PAM: authentication error for illegal user a from 10.0.0.88
  20. Dec 26 10:32:34 b sshd[1214]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49703 ssh2
  21. Dec 26 10:32:34 b sshd[1214]: error: PAM: authentication error for illegal user a from 10.0.0.88
  22. Dec 26 10:32:34 b sshd[1214]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49703 ssh2
  23. Dec 26 10:32:39 b sshd[1218]: Invalid user a from 10.0.0.88
  24. Dec 26 10:32:39 b sshd[1218]: error: PAM: authentication error for illegal user a from 10.0.0.88
  25. Dec 26 10:32:39 b sshd[1218]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49704 ssh2
  26. Dec 26 10:32:39 b sshd[1218]: error: PAM: authentication error for illegal user a from 10.0.0.88
  27. Dec 26 10:32:39 b sshd[1218]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49704 ssh2
  28. Dec 26 10:32:43 b sshd[1222]: Invalid user a from 10.0.0.88
  29. Dec 26 10:32:44 b sshd[1222]: error: PAM: authentication error for illegal user a from 10.0.0.88
  30. Dec 26 10:32:44 b sshd[1222]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49705 ssh2
  31. Dec 26 10:32:44 b sshd[1222]: error: PAM: authentication error for illegal user a from 10.0.0.88
  32. Dec 26 10:32:44 b sshd[1222]: Failed keyboard-interactive/pam for invalid user a from 10.0.0.88 port 49705 ssh2
  33. Dec 26 10:32:48 b sshd[1226]: Invalid user a from 10.0.0.88
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作者: f5b    时间: 2010-12-26 11:05
环境
freebsd 8.1 release
sshguard 1.4



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