| 1 |
Hola a todos. |
| 2 |
Tengo un problemilla. |
| 3 |
Todos los días recibo "ataques". |
| 4 |
Es una tontería. Simplemente intentan logarse en mi máquina mediante ssh |
| 5 |
con diferentes usuario. |
| 6 |
Lógicamente no consiguen entrar, pero me gustaría se se puede bloquear |
| 7 |
estas ips de forma automática durante un tiempo, para impedir que sigan |
| 8 |
intentándolo. |
| 9 |
Es decir: |
| 10 |
Si desde la misma dirección ip se intenta acceder de varios usuarios |
| 11 |
distintos y no lo consigue, bloquear esa ip durante un buen rato. |
| 12 |
|
| 13 |
Tenía pensado, mediante iptables, restringir el acceso ssh sólo si |
| 14 |
accedo desde mi máquina, pero como no tengo ip fija. :( |
| 15 |
|
| 16 |
En el caso de poder hacer esto, cómo se llamaría la técnica. Lo digo |
| 17 |
para buscar en el google. |
| 18 |
|
| 19 |
Un saludi y gracias. |
| 20 |
|
| 21 |
Os paso fragmentos del log: |
| 22 |
.............. |
| 23 |
Jul 19 03:06:03 [sshd] Invalid user lynx from 211.233.73.160 |
| 24 |
Jul 19 03:06:13 [sshd] Invalid user monkey from 211.233.73.160 |
| 25 |
Jul 19 03:06:22 [sshd] Invalid user lion from 211.233.73.160 |
| 26 |
Jul 19 03:06:30 [sshd] Invalid user heart from 211.233.73.160 |
| 27 |
Jul 19 03:06:39 [sshd] Invalid user michel from 211.233.73.160 |
| 28 |
Jul 19 03:06:48 [sshd] Invalid user alibaba from 211.233.73.160 |
| 29 |
Jul 19 03:06:56 [sshd] Invalid user bebe from 211.233.73.160 |
| 30 |
Jul 19 03:07:05 [sshd] Invalid user mp3 from 211.233.73.160 |
| 31 |
Jul 19 03:07:14 [sshd] Invalid user music from 211.233.73.160 |
| 32 |
Jul 19 03:07:23 [sshd] Invalid user spirit from 211.233.73.160 |
| 33 |
Jul 19 03:07:32 [sshd] Invalid user radu from 211.233.73.160 |
| 34 |
Jul 19 03:07:41 [sshd] Invalid user xxx from 211.233.73.160 |
| 35 |
Jul 19 03:07:50 [sshd] Invalid user sex from 211.233.73.160 |
| 36 |
Jul 19 03:07:59 [sshd] Invalid user lolita from 211.233.73.160 |
| 37 |
Jul 19 03:08:08 [sshd] Invalid user teen from 211.233.73.160 |
| 38 |
Jul 19 03:08:17 [sshd] Invalid user adult from 211.233.73.160 |
| 39 |
Jul 19 03:08:26 [sshd] Invalid user movie from 211.233.73.160 |
| 40 |
Jul 19 03:08:35 [sshd] Invalid user movies from 211.233.73.160 |
| 41 |
Jul 19 03:08:54 [sshd] Invalid user status from 211.233.73.160 |
| 42 |
Jul 19 03:09:04 [sshd] Invalid user iptables from 211.233.73.160 |
| 43 |
Jul 19 03:09:14 [sshd] Invalid user portal from 211.233.73.160 |
| 44 |
Jul 19 03:09:23 [sshd] Invalid user history from 211.233.73.160 |
| 45 |
Jul 19 03:09:32 [sshd] Invalid user dev from 211.233.73.160 |
| 46 |
Jul 19 03:09:40 [sshd] Invalid user egrep from 211.233.73.160 |
| 47 |
Jul 19 03:09:48 [sshd] Invalid user update from 211.233.73.160 |
| 48 |
Jul 19 07:53:08 [sshd] Invalid user test from 202.127.19.158 |
| 49 |
.......... |
| 50 |
Jul 20 10:27:40 [sshd] Invalid user test from 213.61.160.9 |
| 51 |
- Last output repeated 25 times - |
| 52 |
Jul 20 10:27:48 [sshd] Invalid user admin from 213.61.160.9 |
| 53 |
- Last output repeated 27 times - |
| 54 |
Jul 20 10:27:57 [sshd] User guest not allowed because shell /dev/null is |
| 55 |
not executable |
| 56 |
- Last output repeated 20 times - |
| 57 |
Jul 20 10:28:02 [sshd] Invalid user user from 213.61.160.9 |
| 58 |
- Last output repeated 22 times - |
| 59 |
Jul 20 10:28:09 [sshd] Invalid user sales from 213.61.160.9 |
| 60 |
- Last output repeated 7 times - |
| 61 |
Jul 20 10:28:14 [sshd] Invalid user webadmin from 213.61.160.9 |
| 62 |
- Last output repeated 8 times - |
| 63 |
Jul 20 10:28:17 [sshd] Invalid user spam from 213.61.160.9 |
| 64 |
- Last output repeated 7 times - |
| 65 |
Jul 20 10:28:20 [sshd] Invalid user virus from 213.61.160.9 |
| 66 |
- Last output repeated 7 times - |
| 67 |
Jul 20 10:28:25 [sshd] Invalid user oracle from 213.61.160.9 |
| 68 |
- Last output repeated 7 times - |
| 69 |
Jul 20 10:28:32 [sshd] Invalid user webmaster from 213.61.160.9 |
| 70 |
- Last output repeated 6 times - |
| 71 |
Jul 20 10:28:42 [sshd] Invalid user linux from 213.61.160.9 |
| 72 |
- Last output repeated 2 times - |
| 73 |
Jul 20 10:28:43 [sshd] Invalid user web from 213.61.160.9 |
| 74 |
- Last output repeated 3 times - |
| 75 |
Jul 20 10:28:44 [sshd] Invalid user webmail from 213.61.160.9 |
| 76 |
- Last output repeated 5 times - |
| 77 |
Jul 20 10:28:48 [sshd] Invalid user pgsql from 213.61.160.9 |
| 78 |
Jul 20 10:28:48 [sshd] Invalid user pqsql from 213.61.160.9 |
| 79 |
Jul 20 10:28:48 [sshd] Invalid user pgsql from 213.61.160.9 |
| 80 |
- Last output repeated 5 times - |
| 81 |
Jul 20 10:28:52 [sshd] Invalid user info from 213.61.160.9 |
| 82 |
- Last output repeated 14 times - |
| 83 |
Jul 20 10:28:56 [sshd] Invalid user library from 213.61.160.9 |
| 84 |
- Last output repeated 8 times - |
| 85 |
............... |
| 86 |
Jul 23 23:32:37 [sshd] Invalid user jancsi from 218.188.14.243 |
| 87 |
Jul 23 23:32:39 [sshd] Invalid user jani from 218.188.14.243 |
| 88 |
Jul 23 23:32:42 [sshd] Invalid user janika from 218.188.14.243 |
| 89 |
Jul 23 23:32:44 [sshd] Invalid user janos from 218.188.14.243 |
| 90 |
Jul 23 23:32:47 [sshd] Invalid user jenci from 218.188.14.243 |
| 91 |
Jul 23 23:32:49 [sshd] Invalid user jeno from 218.188.14.243 |
| 92 |
Jul 23 23:32:52 [sshd] Invalid user johanna from 218.188.14.243 |
| 93 |
Jul 23 23:32:54 [sshd] Invalid user jolan from 218.188.14.243 |
| 94 |
Jul 23 23:32:57 [sshd] Invalid user jolanka from 218.188.14.243 |
| 95 |
Jul 23 23:32:59 [sshd] Invalid user levi from 218.188.14.243 |
| 96 |
Jul 23 23:33:02 [sshd] Invalid user levente from 218.188.14.243 |
| 97 |
Jul 23 23:33:04 [sshd] Invalid user isti from 218.188.14.243 |
| 98 |
Jul 23 23:33:07 [sshd] Invalid user pisti from 218.188.14.243 |
| 99 |
Jul 23 23:33:09 [sshd] Invalid user tibor from 218.188.14.243 |
| 100 |
Jul 23 23:33:12 [sshd] Invalid user karoly from 218.188.14.243 |
| 101 |
Jul 23 23:33:14 [sshd] Invalid user tibi from 218.188.14.243 |
| 102 |
Jul 23 23:33:17 [sshd] Invalid user norbi from 218.188.14.243 |
| 103 |
Jul 23 23:33:19 [sshd] Invalid user marta from 218.188.14.243 |
| 104 |
Jul 23 23:33:22 [sshd] Invalid user zoltan from 218.188.14.243 |
| 105 |
Jul 23 23:33:25 [sshd] Invalid user agape from 218.188.14.243 |
| 106 |
Jul 23 23:33:27 [sshd] Invalid user agapios from 218.188.14.243 |
| 107 |
Jul 23 23:33:30 [sshd] Invalid user agathe from 218.188.14.243 |
| 108 |
Jul 23 23:33:32 [sshd] Invalid user aglaia from 218.188.14.243 |
| 109 |
Jul 24 04:07:23 [sshd] Invalid user admin from 60.248.99.237 |
| 110 |
- Last output repeated 2 times - |
| 111 |
Jul 24 04:07:32 [sshd] Invalid user ftpuser from 60.248.99.237 |
| 112 |
- Last output repeated 6 times - |
| 113 |
Jul 24 04:07:54 [sshd] Invalid user mailtest from 60.248.99.237 |
| 114 |
- Last output repeated 5 times - |
| 115 |
Jul 24 04:08:12 [sshd] Invalid user testuser from 60.248.99.237 |
| 116 |
- Last output repeated 5 times - |
| 117 |
Jul 24 04:08:30 [sshd] Invalid user sales from 60.248.99.237 |
| 118 |
- Last output repeated 6 times - |
| 119 |
Jul 24 04:09:53 [sshd] Invalid user student from 60.248.99.237 |
| 120 |
- Last output repeated 5 times - |
| 121 |
Jul 24 04:10:12 [sshd] Invalid user service from 60.248.99.237 |
| 122 |
- Last output repeated 5 times - |
| 123 |
...... |
| 124 |
Y así hasta el infinito. |
| 125 |
|
| 126 |
|
| 127 |
|
| 128 |
|
| 129 |
-- |
| 130 |
Ángel Cervera Claudio |
| 131 |
Freelance / desarrollos j2ee |
| 132 |
web: http://www.acervera.com |
| 133 |
tlf: 670819234 / 916058546 |
| 134 |
email: angel@××××××××.com |
| 135 |
msn: angelcervera@××××××××××.com |
| 136 |
yahoo: angelcervera |
| 137 |
aol: angelcervera |
| 138 |
jabber: angelcervera en jabber.org |
| 139 |
|
| 140 |
-- |
| 141 |
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