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I think im being targeted

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Thread Starter 
This has been happening for a few months now, but im starting to get a bit concerned. Its normally on the port 3726 which is the remote desktop if im not mistaken.

Looking at my router security logs, every 10 minutes or so there is an intrusion alert or a port scan. Here is a log of the last 3 or 4 days. Can someone give me some advice on what I should do, or what they are looking for?

Here's the log for you.

Quote:
Firewall log:
Jan 11 03:38:49 kernel: Intrusion detected from 88.192.20.107. Source port is 59335, and destination port is 3726 which use the TCP protocol.

Jan 11 04:51:42 kernel: Intrusion detected from 89.152.85.88. Source port is 60620, and destination port is 3391 which use the TCP protocol.

Jan 11 04:51:45 kernel: Intrusion detected from 89.152.85.88. Source port is 60620, and destination port is 3391 which use the TCP protocol.

Jan 11 05:58:21 kernel: Intrusion detected from 91.85.174.38. Source port is 64406, and destination port is 3391 which use the TCP protocol.

Jan 11 05:58:22 kernel: Intrusion detected from 91.85.174.38. Source port is 64406, and destination port is 3391 which use the TCP protocol.

Jan 11 05:58:23 kernel: Intrusion detected from 91.85.174.38. Source port is 64406, and destination port is 3391 which use the TCP protocol.

Jan 11 05:58:24 kernel: Intrusion detected from 91.85.174.38. Source port is 64406, and destination port is 3391 which use the TCP protocol.

Jan 11 05:58:25 kernel: Intrusion detected from 91.85.174.38. Source port is 64406, and destination port is 3391 which use the TCP protocol.

Jan 11 07:24:28 kernel: Intrusion detected from 62.163.27.73. Source port is 63693, and destination port is 3726 which use the TCP protocol.

Jan 11 07:24:29 kernel: Intrusion detected from 62.163.27.73. Source port is 63693, and destination port is 3726 which use the TCP protocol.

Jan 11 07:24:30 kernel: Intrusion detected from 62.163.27.73. Source port is 63693, and destination port is 3726 which use the TCP protocol.

Jan 11 07:24:31 kernel: Intrusion detected from 62.163.27.73. Source port is 63693, and destination port is 3726 which use the TCP protocol.

Jan 11 07:24:32 kernel: Intrusion detected from 62.163.27.73. Source port is 63693, and destination port is 3726 which use the TCP protocol.

Jan 11 07:35:24 kernel: Intrusion detected from 77.56.112.229. Source port is 33376, and destination port is 3726 which use the TCP protocol.

Jan 11 07:46:03 kernel: Intrusion detected from 87.185.70.23. Source port is 50810, and destination port is 3726 which use the TCP protocol.

Jan 11 07:54:30 kernel: Intrusion detected from 86.135.198.168. Source port is 49463, and destination port is 3726 which use the TCP protocol.

Jan 11 08:05:01 kernel: Intrusion detected from 94.246.35.183. Source port is 49934, and destination port is 3726 which use the TCP protocol.

Jan 11 08:39:33 kernel: Intrusion detected from 109.210.208.47. Source port is 50213, and destination port is 3726 which use the TCP protocol.

Jan 11 08:39:36 kernel: Intrusion detected from 109.210.208.47. Source port is 50213, and destination port is 3726 which use the TCP protocol.

Jan 11 08:39:42 kernel: Intrusion detected from 109.210.208.47. Source port is 50213, and destination port is 3726 which use the TCP protocol.

Jan 11 08:41:45 kernel: Intrusion detected from 93.129.99.243. Source port is 4689, and destination port is 3726 which use the TCP protocol.

Jan 11 08:41:48 kernel: Intrusion detected from 93.129.99.243. Source port is 4689, and destination port is 3726 which use the TCP protocol.

Jan 11 08:49:37 kernel: Intrusion detected from 213.114.136.203. Source port is 52497, and destination port is 3726 which use the TCP protocol.

Jan 11 08:59:51 kernel: Intrusion detected from 78.144.77.118. Source port is 56735, and destination port is 3726 which use the TCP protocol.

Jan 11 09:09:56 kernel: Intrusion detected from 80.208.47.82. Source port is 53232, and destination port is 3726 which use the TCP protocol.

Jan 11 09:19:53 kernel: Intrusion detected from 81.247.169.118. Source port is 50317, and destination port is 3726 which use the TCP protocol.

Jan 11 09:29:35 kernel: Intrusion detected from 92.224.169.213. Source port is 49407, and destination port is 3726 which use the TCP protocol.

Jan 11 09:52:37 kernel: Intrusion detected from 83.251.51.132. Source port is 51183, and destination port is 3726 which use the TCP protocol.

Jan 11 09:52:40 kernel: Intrusion detected from 83.251.51.132. Source port is 51183, and destination port is 3726 which use the TCP protocol.

Jan 11 10:44:41 kernel: Intrusion detected from 88.241.50.154. Source port is 20226, and destination port is 3726 which use the TCP protocol.

Jan 11 10:44:44 kernel: Intrusion detected from 88.241.50.154. Source port is 20226, and destination port is 3726 which use the TCP protocol.

Jan 11 10:44:50 kernel: Intrusion detected from 88.241.50.154. Source port is 20226, and destination port is 3726 which use the TCP protocol.

Jan 11 11:58:29 kernel: Intrusion detected from 94.2.97.242. Source port is 53683, and destination port is 3726 which use the TCP protocol.

Jan 11 11:58:33 kernel: Intrusion detected from 94.2.97.242. Source port is 53683, and destination port is 3726 which use the TCP protocol.

Jan 11 13:01:47 kernel: Intrusion detected from 82.8.221.113. Source port is 52468, and destination port is 3726 which use the TCP protocol.

Jan 11 13:01:50 kernel: Intrusion detected from 82.8.221.113. Source port is 52468, and destination port is 3726 which use the TCP protocol.

Jan 11 13:01:53 kernel: Intrusion detected from 82.8.221.113. Source port is 52468, and destination port is 3726 which use the TCP protocol.

Jan 11 13:01:56 kernel: Intrusion detected from 82.8.221.113. Source port is 52468, and destination port is 3726 which use the TCP protocol.

Jan 11 13:01:59 kernel: Intrusion detected from 82.8.221.113. Source port is 52468, and destination port is 3726 which use the TCP protocol.

Jan 11 15:11:07 kernel: Intrusion detected from 93.97.35.223. Source port is 63338, and destination port is 3726 which use the TCP protocol.

Jan 11 15:11:10 kernel: Intrusion detected from 93.97.35.223. Source port is 63338, and destination port is 3726 which use the TCP protocol.

Jan 11 15:11:16 kernel: Intrusion detected from 93.97.35.223. Source port is 63338, and destination port is 3726 which use the TCP protocol.

Jan 11 15:58:05 kernel: Intrusion detected from 86.31.242.101. Source port is 62057, and destination port is 3726 which use the TCP protocol.

Jan 11 15:58:08 kernel: Intrusion detected from 86.31.242.101. Source port is 62057, and destination port is 3726 which use the TCP protocol.

Jan 11 15:58:14 kernel: Intrusion detected from 86.31.242.101. Source port is 62057, and destination port is 3726 which use the TCP protocol.

Jan 11 15:59:28 kernel: PORT SCANNER ATTACK detected from 96.53.150.39. Source port is 50541, and destination port is 3390 which use the TCP protocol.

Jan 11 16:56:01 kernel: Intrusion detected from 157.228.91.223. Source port is 47058, and destination port is 3726 which use the TCP protocol.

Jan 11 16:56:02 kernel: Intrusion detected from 157.228.91.223. Source port is 47058, and destination port is 3726 which use the TCP protocol.

Jan 11 16:56:03 kernel: Intrusion detected from 157.228.91.223. Source port is 47058, and destination port is 3726 which use the TCP protocol.

Jan 11 16:56:04 kernel: Intrusion detected from 157.228.91.223. Source port is 47058, and destination port is 3726 which use the TCP protocol.

Jan 11 16:56:05 kernel: Intrusion detected from 157.228.91.223. Source port is 47058, and destination port is 3726 which use the TCP protocol.

Jan 11 16:59:08 kernel: Intrusion detected from 89.204.153.79. Source port is 11891, and destination port is 3726 which use the TCP protocol.

Jan 11 16:59:11 kernel: Intrusion detected from 89.204.153.79. Source port is 11891, and destination port is 3726 which use the TCP protocol.

Jan 11 16:59:17 kernel: Intrusion detected from 89.204.153.79. Source port is 11891, and destination port is 3726 which use the TCP protocol.

Jan 11 17:00:20 kernel: Intrusion detected from 178.122.132.24. Source port is 50613, and destination port is 3726 which use the TCP protocol.

Jan 11 17:00:23 kernel: Intrusion detected from 178.122.132.24. Source port is 50613, and destination port is 3726 which use the TCP protocol.

Jan 11 17:10:24 kernel: Intrusion detected from 93.228.122.146. Source port is 1773, and destination port is 3726 which use the TCP protocol.

Jan 11 17:17:22 kernel: Intrusion detected from 81.103.53.149. Source port is 50726, and destination port is 3726 which use the TCP protocol.

Jan 11 17:17:25 kernel: Intrusion detected from 81.103.53.149. Source port is 50726, and destination port is 3726 which use the TCP protocol.

Jan 11 17:17:31 kernel: Intrusion detected from 81.103.53.149. Source port is 50726, and destination port is 3726 which use the TCP protocol.

Jan 11 17:18:05 kernel: Intrusion detected from 87.56.12.129. Source port is 58457, and destination port is 3726 which use the TCP protocol.

Jan 11 17:18:08 kernel: Intrusion detected from 87.56.12.129. Source port is 58457, and destination port is 3726 which use the TCP protocol.

Jan 11 17:25:33 kernel: Intrusion detected from 87.147.75.245. Source port is 3301, and destination port is 3726 which use the TCP protocol.

Jan 11 17:25:36 kernel: Intrusion detected from 87.147.75.245. Source port is 3301, and destination port is 3726 which use the TCP protocol.

Jan 11 17:25:42 kernel: Intrusion detected from 87.147.75.245. Source port is 3301, and destination port is 3726 which use the TCP protocol.

Jan 11 17:27:06 kernel: Intrusion detected from 84.137.171.161. Source port is 63868, and destination port is 3726 which use the TCP protocol.

Jan 11 17:27:09 kernel: Intrusion detected from 84.137.171.161. Source port is 63868, and destination port is 3726 which use the TCP protocol.

Jan 11 17:30:12 kernel: Intrusion detected from 83.89.223.214. Source port is 51193, and destination port is 3726 which use the TCP protocol.

Jan 11 17:30:15 kernel: Intrusion detected from 83.89.223.214. Source port is 51193, and destination port is 3726 which use the TCP protocol.

Jan 11 17:30:19 kernel: Intrusion detected from 188.179.10.184. Source port is 50972, and destination port is 3726 which use the TCP protocol.

Jan 11 17:30:21 kernel: Intrusion detected from 83.89.223.214. Source port is 51193, and destination port is 3726 which use the TCP protocol.

Jan 11 17:30:22 kernel: Intrusion detected from 188.179.10.184. Source port is 50972, and destination port is 3726 which use the TCP protocol.

Jan 11 17:39:12 kernel: Intrusion detected from 178.91.167.44. Source port is 3119, and destination port is 3726 which use the TCP protocol.

Jan 11 17:39:15 kernel: Intrusion detected from 178.91.167.44. Source port is 3119, and destination port is 3726 which use the TCP protocol.

Jan 11 17:39:22 kernel: Intrusion detected from 178.91.167.44. Source port is 3119, and destination port is 3726 which use the TCP protocol.

Jan 11 17:39:49 kernel: Intrusion detected from 89.169.121.57. Source port is 3485, and destination port is 3726 which use the TCP protocol.

Jan 11 17:39:52 kernel: Intrusion detected from 89.169.121.57. Source port is 3485, and destination port is 3726 which use the TCP protocol.

Jan 11 17:51:23 kernel: Intrusion detected from 68.60.90.95. Source port is 1828, and destination port is 3726 which use the TCP protocol.

Jan 11 18:42:13 kernel: Intrusion detected from 24.142.25.12. Source port is 3364, and destination port is 3391 which use the TCP protocol.

Jan 11 18:42:16 kernel: Intrusion detected from 24.142.25.12. Source port is 3364, and destination port is 3391 which use the TCP protocol.

Jan 11 18:42:22 kernel: Intrusion detected from 24.142.25.12. Source port is 3364, and destination port is 3391 which use the TCP protocol.

Jan 11 20:08:45 kernel: Intrusion detected from 89.204.153.153. Source port is 30590, and destination port is 3726 which use the TCP protocol.

Jan 11 20:08:48 kernel: Intrusion detected from 89.204.153.153. Source port is 30590, and destination port is 3726 which use the TCP protocol.

Jan 11 20:08:54 kernel: Intrusion detected from 89.204.153.153. Source port is 30590, and destination port is 3726 which use the TCP protocol.

Jan 11 20:14:21 kernel: Intrusion detected from 84.2.90.131. Source port is 63338, and destination port is 3726 which use the TCP protocol.

Jan 11 20:14:24 kernel: Intrusion detected from 84.2.90.131. Source port is 63338, and destination port is 3726 which use the TCP protocol.

Jan 11 20:15:11 kernel: PORT SCANNER ATTACK detected from 83.109.205.114. Source port is 17047, and destination port is 3390 which use the TCP protocol.

Jan 11 20:18:46 kernel: Intrusion detected from 85.171.130.63. Source port is 49643, and destination port is 3726 which use the TCP protocol.

Jan 11 20:20:08 kernel: PORT SCANNER ATTACK detected from 82.27.167.59. Source port is 56012, and destination port is 3390 which use the TCP protocol.

Jan 11 20:20:08 kernel: PORT SCANNER ATTACK detected from 174.60.69.132. Source port is 49356, and destination port is 3390 which use the TCP protocol.

Jan 11 20:20:09 kernel: PORT SCANNER ATTACK detected from 91.107.115.223. Source port is 50734, and destination port is 3390 which use the TCP protocol.

Jan 11 20:20:09 kernel: PORT SCANNER ATTACK detected from 213.122.214.254. Source port is 57051, and destination port is 3390 which use the TCP protocol.

Jan 11 20:20:11 kernel: PORT SCANNER ATTACK detected from 174.60.69.132. Source port is 49356, and destination port is 3390 which use the TCP protocol.

Jan 11 20:20:21 kernel: Intrusion detected from 93.82.32.242. Source port is 49421, and destination port is 3726 which use the TCP protocol.

Jan 11 20:20:27 kernel: Intrusion detected from 93.82.32.242. Source port is 49421, and destination port is 3726 which use the TCP protocol.

Jan 11 20:22:18 kernel: Intrusion detected from 88.0.102.15. Source port is 2101, and destination port is 3726 which use the TCP protocol.

Jan 11 20:22:21 kernel: Intrusion detected from 88.0.102.15. Source port is 2101, and destination port is 3726 which use the TCP protocol.

Jan 11 20:22:27 kernel: Intrusion detected from 88.0.102.15. Source port is 2101, and destination port is 3726 which use the TCP protocol.

Jan 11 20:30:54 kernel: Intrusion detected from 90.53.205.42. Source port is 50878, and destination port is 3726 which use the TCP protocol.

Jan 11 20:40:43 kernel: Intrusion detected from 94.11.73.197. Source port is 53101, and destination port is 3391 which use the TCP protocol.

Jan 11 20:40:46 kernel: Intrusion detected from 94.11.73.197. Source port is 53101, and destination port is 3391 which use the TCP protocol.

Jan 11 20:40:52 kernel: Intrusion detected from 94.11.73.197. Source port is 53101, and destination port is 3391 which use the TCP protocol.

Jan 11 20:42:42 kernel: Intrusion detected from 87.165.129.170. Source port is 2201, and destination port is 3726 which use the TCP protocol.

Jan 11 20:42:45 kernel: Intrusion detected from 87.165.129.170. Source port is 2201, and destination port is 3726 which use the TCP protocol.

Jan 11 20:43:45 kernel: PORT SCANNER ATTACK detected from 92.9.226.201. Source port is 57838, and destination port is 3724 which use the TCP protocol.

Jan 11 20:51:17 kernel: Intrusion detected from 78.82.24.204. Source port is 55646, and destination port is 3726 which use the TCP protocol.

Jan 11 22:31:37 kernel: PORT SCANNER ATTACK detected from 96.251.153.51. Source port is 52250, and destination port is 3390 which use the TCP protocol.

Jan 12 09:21:39 kernel: Intrusion detected from 76.12.35.200. Source port is 10486, and destination port is 3391 which use the TCP protocol.

Jan 12 09:58:44 kernel: Intrusion detected from 89.152.85.88. Source port is 52740, and destination port is 3391 which use the TCP protocol.

Jan 12 09:58:47 kernel: Intrusion detected from 89.152.85.88. Source port is 52740, and destination port is 3391 which use the TCP protocol.

Jan 12 16:01:02 kernel: PORT SCANNER ATTACK detected from 72.253.216.37. Source port is 55059, and destination port is 3390 which use the TCP protocol.

Jan 14 16:48:48 kernel: Intrusion detected from 212.183.79.113. Source port is 57520, and destination port is 3726 which use the TCP protocol.

Jan 14 16:48:51 kernel: Intrusion detected from 212.183.79.113. Source port is 57520, and destination port is 3726 which use the TCP protocol.

Jan 14 16:48:54 kernel: Intrusion detected from 81.106.118.134. Source port is 4350, and destination port is 3726 which use the TCP protocol.

Jan 14 16:48:57 kernel: Intrusion detected from 81.106.118.134. Source port is 4350, and destination port is 3726 which use the TCP protocol.

Jan 14 16:49:03 kernel: Intrusion detected from 81.106.118.134. Source port is 4350, and destination port is 3726 which use the TCP protocol.

Jan 14 16:49:05 kernel: Intrusion detected from 91.15.123.68. Source port is 2566, and destination port is 3726 which use the TCP protocol.

Jan 14 16:49:48 kernel: Intrusion detected from 78.249.16.124. Source port is 49964, and destination port is 3726 which use the TCP protocol.

Jan 14 16:49:51 kernel: Intrusion detected from 78.249.16.124. Source port is 49964, and destination port is 3726 which use the TCP protocol.

Jan 14 16:49:54 kernel: Intrusion detected from 82.44.168.252. Source port is 3743, and destination port is 3726 which use the TCP protocol.

Jan 14 16:49:57 kernel: Intrusion detected from 78.249.16.124. Source port is 49964, and destination port is 3726 which use the TCP protocol.

Jan 14 16:49:57 kernel: Intrusion detected from 82.44.168.252. Source port is 3743, and destination port is 3726 which use the TCP protocol.

Jan 14 16:50:17 kernel: Intrusion detected from 81.217.100.175. Source port is 27560, and destination port is 3726 which use the TCP protocol.

Jan 14 16:50:17 kernel: Intrusion detected from 91.8.36.68. Source port is 49416, and destination port is 3726 which use the TCP protocol.

Jan 14 16:50:19 kernel: Intrusion detected from 81.217.100.175. Source port is 27560, and destination port is 3726 which use the TCP protocol.

Jan 14 16:50:20 kernel: Intrusion detected from 91.8.36.68. Source port is 49416, and destination port is 3726 which use the TCP protocol.

Jan 14 16:50:25 kernel: Intrusion detected from 81.217.100.175. Source port is 27560, and destination port is 3726 which use the TCP protocol.

Jan 14 16:51:03 kernel: Intrusion detected from 88.109.60.234. Source port is 3691, and destination port is 3726 which use the TCP protocol.

Jan 14 16:51:06 kernel: Intrusion detected from 88.109.60.234. Source port is 3691, and destination port is 3726 which use the TCP protocol.

Jan 14 16:51:19 kernel: Intrusion detected from 217.39.49.159. Source port is 64174, and destination port is 3726 which use the TCP protocol.

Jan 14 16:51:22 kernel: Intrusion detected from 217.39.49.159. Source port is 64174, and destination port is 3726 which use the TCP protocol.

Jan 14 16:51:28 kernel: Intrusion detected from 217.39.49.159. Source port is 64174, and destination port is 3726 which use the TCP protocol.

Jan 14 16:51:49 kernel: Intrusion detected from 83.39.219.180. Source port is 58455, and destination port is 3726 which use the TCP protocol.

Jan 14 16:51:52 kernel: Intrusion detected from 83.39.219.180. Source port is 58455, and destination port is 3726 which use the TCP protocol.

Jan 14 16:51:53 kernel: Intrusion detected from 86.143.131.24. Source port is 55752, and destination port is 3726 which use the TCP protocol.

Jan 14 16:51:56 kernel: Intrusion detected from 86.143.131.24. Source port is 55752, and destination port is 3726 which use the TCP protocol.

Jan 14 16:52:07 kernel: Intrusion detected from 90.10.31.29. Source port is 1717, and destination port is 3726 which use the TCP protocol.

Jan 14 16:52:22 kernel: Intrusion detected from 89.214.168.109. Source port is 50422, and destination port is 3726 which use the TCP protocol.

Jan 14 16:52:25 kernel: Intrusion detected from 89.214.168.109. Source port is 50422, and destination port is 3726 which use the TCP protocol.

Jan 14 16:52:31 kernel: Intrusion detected from 89.214.168.109. Source port is 50422, and destination port is 3726 which use the TCP protocol.

Jan 14 16:52:36 kernel: Intrusion detected from 90.30.45.105. Source port is 49621, and destination port is 3726 which use the TCP protocol.

Jan 14 16:52:45 kernel: Intrusion detected from 90.30.45.105. Source port is 49621, and destination port is 3726 which use the TCP protocol.

Jan 14 16:52:47 kernel: Intrusion detected from 85.179.35.136. Source port is 50179, and destination port is 3726 which use the TCP protocol.

Jan 14 16:52:53 kernel: Intrusion detected from 85.179.35.136. Source port is 50179, and destination port is 3726 which use the TCP protocol.

Jan 14 16:53:03 kernel: Intrusion detected from 84.198.51.82. Source port is 49381, and destination port is 3726 which use the TCP protocol.

Jan 14 16:53:06 kernel: Intrusion detected from 84.198.51.82. Source port is 49381, and destination port is 3726 which use the TCP protocol.

Jan 14 16:53:30 kernel: Intrusion detected from 87.180.29.36. Source port is 53178, and destination port is 3726 which use the TCP protocol.

Jan 14 16:53:32 kernel: Intrusion detected from 87.180.29.36. Source port is 53178, and destination port is 3726 which use the TCP protocol.

Jan 14 16:53:34 kernel: Intrusion detected from 89.218.22.105. Source port is 1207, and destination port is 3726 which use the TCP protocol.

Jan 14 16:53:37 kernel: Intrusion detected from 89.218.22.105. Source port is 1207, and destination port is 3726 which use the TCP protocol.

Jan 14 16:53:39 kernel: Intrusion detected from 87.180.29.36. Source port is 53178, and destination port is 3726 which use the TCP protocol.

Jan 14 16:54:19 kernel: Intrusion detected from 82.31.52.5. Source port is 49801, and destination port is 3726 which use the TCP protocol.

Jan 14 16:54:22 kernel: Intrusion detected from 82.31.52.5. Source port is 49801, and destination port is 3726 which use the TCP protocol.

Jan 14 16:54:28 kernel: Intrusion detected from 82.31.52.5. Source port is 49801, and destination port is 3726 which use the TCP protocol.

Jan 14 16:54:41 kernel: Intrusion detected from 46.0.112.180. Source port is 4940, and destination port is 3726 which use the TCP protocol.

Jan 14 16:54:44 kernel: Intrusion detected from 46.0.112.180. Source port is 4940, and destination port is 3726 which use the TCP protocol.

Jan 14 16:54:50 kernel: Intrusion detected from 46.0.112.180. Source port is 4940, and destination port is 3726 which use the TCP protocol.

Jan 14 16:55:14 kernel: Intrusion detected from 78.69.243.137. Source port is 50044, and destination port is 3726 which use the TCP protocol.

Jan 14 16:55:14 kernel: Intrusion detected from 92.201.135.28. Source port is 49532, and destination port is 3726 which use the TCP protocol.

Jan 14 16:55:17 kernel: Intrusion detected from 78.69.243.137. Source port is 50044, and destination port is 3726 which use the TCP protocol.

Jan 14 16:55:17 kernel: Intrusion detected from 92.201.135.28. Source port is 49532, and destination port is 3726 which use the TCP protocol.

Jan 14 16:55:23 kernel: Intrusion detected from 78.69.243.137. Source port is 50044, and destination port is 3726 which use the TCP protocol.

Jan 14 16:55:23 kernel: Intrusion detected from 92.201.135.28. Source port is 49532, and destination port is 3726 which use the TCP protocol.

Jan 14 16:55:24 kernel: Intrusion detected from 93.241.192.221. Source port is 52510, and destination port is 3726 which use the TCP protocol.

Jan 14 16:55:55 kernel: Intrusion detected from 217.189.154.255. Source port is 14801, and destination port is 3726 which use the TCP protocol.

Jan 14 16:56:00 kernel: Intrusion detected from 217.189.154.255. Source port is 14801, and destination port is 3726 which use the TCP protocol.

Jan 14 16:56:35 kernel: Intrusion detected from 87.178.178.7. Source port is 49717, and destination port is 3726 which use the TCP protocol.

Jan 14 16:56:38 kernel: Intrusion detected from 87.178.178.7. Source port is 49717, and destination port is 3726 which use the TCP protocol.

Jan 14 16:56:44 kernel: Intrusion detected from 87.178.178.7. Source port is 49717, and destination port is 3726 which use the TCP protocol.

Jan 14 16:57:14 kernel: Intrusion detected from 89.37.10.222. Source port is 60907, and destination port is 3726 which use the TCP protocol.

Jan 14 16:57:17 kernel: Intrusion detected from 89.37.10.222. Source port is 60907, and destination port is 3726 which use the TCP protocol.

Jan 14 16:57:23 kernel: Intrusion detected from 89.37.10.222. Source port is 60907, and destination port is 3726 which use the TCP protocol.

Jan 14 16:57:54 kernel: Intrusion detected from 90.207.60.194. Source port is 49561, and destination port is 3726 which use the TCP protocol.

Jan 14 16:57:57 kernel: Intrusion detected from 90.207.60.194. Source port is 49561, and destination port is 3726 which use the TCP protocol.

Jan 14 16:58:03 kernel: Intrusion detected from 90.207.60.194. Source port is 49561, and destination port is 3726 which use the TCP protocol.

Jan 14 16:58:22 kernel: Intrusion detected from 87.211.137.107. Source port is 52395, and destination port is 3726 which use the TCP protocol.

Jan 14 16:58:25 kernel: Intrusion detected from 87.211.137.107. Source port is 52395, and destination port is 3726 which use the TCP protocol.

Jan 14 16:58:31 kernel: Intrusion detected from 87.211.137.107. Source port is 52395, and destination port is 3726 which use the TCP protocol.

Jan 14 16:59:29 kernel: Intrusion detected from 93.70.176.106. Source port is 54954, and destination port is 3726 which use the TCP protocol.

Jan 14 16:59:32 kernel: Intrusion detected from 93.70.176.106. Source port is 54954, and destination port is 3726 which use the TCP protocol.

Jan 14 16:59:38 kernel: Intrusion detected from 93.70.176.106. Source port is 54954, and destination port is 3726 which use the TCP protocol.

Jan 14 17:00:07 kernel: Intrusion detected from 84.58.130.84. Source port is 54416, and destination port is 3726 which use the TCP protocol.

Jan 14 17:00:10 kernel: Intrusion detected from 84.58.130.84. Source port is 54416, and destination port is 3726 which use the TCP protocol.

Jan 14 17:00:13 kernel: Intrusion detected from 81.48.85.115. Source port is 51432, and destination port is 3726 which use the TCP protocol.

Jan 14 17:00:16 kernel: Intrusion detected from 84.58.130.84. Source port is 54416, and destination port is 3726 which use the TCP protocol.

Jan 14 17:00:16 kernel: Intrusion detected from 81.48.85.115. Source port is 51432, and destination port is 3726 which use the TCP protocol.

Jan 14 17:00:22 kernel: Intrusion detected from 81.48.85.115. Source port is 51432, and destination port is 3726 which use the TCP protocol.

Jan 14 17:00:51 kernel: Intrusion detected from 93.82.15.47. Source port is 3444, and destination port is 3726 which use the TCP protocol.

Jan 14 17:00:57 kernel: Intrusion detected from 93.82.15.47. Source port is 3444, and destination port is 3726 which use the TCP protocol.

Jan 14 17:01:23 kernel: Intrusion detected from 89.12.95.45. Source port is 49472, and destination port is 3726 which use the TCP protocol.

Jan 14 17:01:26 kernel: Intrusion detected from 89.12.95.45. Source port is 49472, and destination port is 3726 which use the TCP protocol.

Jan 14 17:01:32 kernel: Intrusion detected from 89.12.95.45. Source port is 49472, and destination port is 3726 which use the TCP protocol.

Jan 14 17:03:23 kernel: Intrusion detected from 83.195.194.136. Source port is 50183, and destination port is 3726 which use the TCP protocol.

Jan 14 17:03:26 kernel: Intrusion detected from 83.195.194.136. Source port is 50183, and destination port is 3726 which use the TCP protocol.

Jan 14 17:03:32 kernel: Intrusion detected from 83.195.194.136. Source port is 50183, and destination port is 3726 which use the TCP protocol.

Jan 14 17:04:54 kernel: Intrusion detected from 77.193.68.20. Source port is 1107, and destination port is 3726 which use the TCP protocol.

Jan 14 17:04:57 kernel: Intrusion detected from 77.193.68.20. Source port is 1107, and destination port is 3726 which use the TCP protocol.

Jan 14 17:05:03 kernel: Intrusion detected from 77.193.68.20. Source port is 1107, and destination port is 3726 which use the TCP protocol.

Jan 14 17:05:12 kernel: Intrusion detected from 87.245.88.142. Source port is 33786, and destination port is 3726 which use the TCP protocol.

Jan 14 17:05:15 kernel: Intrusion detected from 87.245.88.142. Source port is 33786, and destination port is 3726 which use the TCP protocol.

Jan 14 17:05:21 kernel: Intrusion detected from 87.245.88.142. Source port is 33786, and destination port is 3726 which use the TCP protocol.

Jan 14 17:05:43 kernel: Intrusion detected from 195.178.155.66. Source port is 1576, and destination port is 3726 which use the TCP protocol.

Jan 14 17:05:46 kernel: Intrusion detected from 195.178.155.66. Source port is 1576, and destination port is 3726 which use the TCP protocol.

Jan 14 17:05:52 kernel: Intrusion detected from 195.178.155.66. Source port is 1576, and destination port is 3726 which use the TCP protocol.

Jan 14 17:07:13 kernel: Intrusion detected from 213.89.0.226. Source port is 50557, and destination port is 3726 which use the TCP protocol.

Jan 14 17:07:16 kernel: Intrusion detected from 213.89.0.226. Source port is 50557, and destination port is 3726 which use the TCP protocol.

Jan 14 17:07:22 kernel: Intrusion detected from 213.89.0.226. Source port is 50557, and destination port is 3726 which use the TCP protocol.

Jan 14 17:09:01 kernel: Intrusion detected from 79.242.169.1. Source port is 1362, and destination port is 3726 which use the TCP protocol.

Jan 14 17:09:04 kernel: Intrusion detected from 79.242.169.1. Source port is 1362, and destination port is 3726 which use the TCP protocol.

Jan 14 17:09:09 kernel: Intrusion detected from 79.242.169.1. Source port is 1362, and destination port is 3726 which use the TCP protocol.

Jan 14 17:10:59 kernel: Intrusion detected from 83.33.15.131. Source port is 18516, and destination port is 3726 which use the TCP protocol.

Jan 14 17:11:02 kernel: Intrusion detected from 83.33.15.131. Source port is 18516, and destination port is 3726 which use the TCP protocol.

Jan 14 17:11:56 kernel: Intrusion detected from 194.187.150.202. Source port is 2006, and destination port is 3726 which use the TCP protocol.

Jan 14 17:11:59 kernel: Intrusion detected from 194.187.150.202. Source port is 2006, and destination port is 3726 which use the TCP protocol.

Jan 14 17:12:05 kernel: Intrusion detected from 194.187.150.202. Source port is 2006, and destination port is 3726 which use the TCP protocol.

Jan 14 17:12:49 kernel: Intrusion detected from 84.114.39.172. Source port is 49706, and destination port is 3726 which use the TCP protocol.

Jan 14 17:12:52 kernel: Intrusion detected from 84.114.39.172. Source port is 49706, and destination port is 3726 which use the TCP protocol.

Jan 14 17:12:59 kernel: Intrusion detected from 84.114.39.172. Source port is 49706, and destination port is 3726 which use the TCP protocol.

Jan 14 17:16:05 kernel: Intrusion detected from 90.185.240.126. Source port is 13319, and destination port is 3726 which use the TCP protocol.

Jan 14 17:16:08 kernel: Intrusion detected from 90.185.240.126. Source port is 13319, and destination port is 3726 which use the TCP protocol.
    
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post #2 of 3
This is pretty common for a WAN facing device.
Especially service ports such as SSH or RDP.

Before I changed my server's SSH port from default, there would be at least 3 or 4 brute force attempts per day, simply because of random port scanning, and then auto attack.
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post #3 of 3
Typical port scan, someone's trying to map open ports to see what services respond.
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