Hi All,
I am new to Redhat Enterprise Linux 6 version. I am facing an issue with my lab server which is having RHEL6
lab1:root> uname -a
Linux lab1 2.6.32-358.18.1.el6.x86_64 #1 SMP Fri Aug 2 17:04:38 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux
I am getting this error for every 18 minutes 30 seconds [approx] in the log file /var/log/secure in my lab1 server. I am getting this error with lab2 server which is having the ip 192.168.1.100
lab1:root> tail -100 /var/log/secure
Apr 15 07:04:01 lab1 sshd[30060]: Connection closed by 192.168.1.100
Apr 15 07:22:32 lab1 sshd[6434]: Connection closed by 192.168.1.100
Apr 15 07:41:05 lab1 sshd[15205]: Connection closed by 192.168.1.100
Apr 15 07:59:36 lab1 sshd[23931]: Connection closed by 192.168.1.100
Apr 15 08:18:08 lab1 sshd[32472]: Connection closed by 192.168.1.100
Apr 15 08:36:39 lab1 sshd[8836]: Connection closed by 192.168.1.100
Apr 15 08:55:12 lab1 sshd[17834]: Connection closed by 192.168.1.100
Apr 15 09:13:45 lab1 sshd[26215]: Connection closed by 192.168.1.100
Apr 15 09:32:16 lab1 sshd[2691]: Connection closed by 192.168.1.100
Apr 15 09:50:48 lab1 sshd[11680]: Connection closed by 192.168.1.100
Apr 15 10:09:20 lab1 sshd[20289]: Connection closed by 192.168.1.100
Apr 15 10:27:51 lab1 sshd[28880]: Connection closed by 192.168.1.100
Apr 15 10:46:22 lab1 sshd[5457]: Connection closed by 192.168.1.100
Apr 15 11:04:53 lab1 sshd[13976]: Connection closed by 192.168.1.100
Apr 15 11:23:24 lab1 sshd[22918]: Connection closed by 192.168.1.100
Apr 15 11:41:55 lab1 sshd[31610]: Connection closed by 192.168.1.100
Apr 15 12:00:27 lab1 sshd[7917]: Connection closed by 192.168.1.100
Apr 15 12:18:59 lab1 sshd[16576]: Connection closed by 192.168.1.100
Apr 15 12:37:29 lab1 sshd[25408]: Connection closed by 192.168.1.100
Apr 15 12:56:01 lab1 sshd[1723]: Connection closed by 192.168.1.100
Apr 15 13:14:32 lab1 sshd[10183]: Connection closed by 192.168.1.100
Apr 15 13:33:05 lab1 sshd[18066]: Connection closed by 192.168.1.100
Apr 15 13:51:37 lab1 sshd[19459]: Connection closed by 192.168.1.100
Apr 15 14:10:11 lab1 sshd[20411]: Connection closed by 192.168.1.100
Apr 15 14:28:44 lab1 sshd[21536]: Connection closed by 192.168.1.100
Apr 15 14:47:15 lab1 sshd[22901]: Connection closed by 192.168.1.100
Apr 15 15:05:48 lab1 sshd[23923]: Connection closed by 192.168.1.100
Apr 15 15:24:20 lab1 sshd[24954]: Connection closed by 192.168.1.100
Apr 15 15:42:51 lab1 sshd[26180]: Connection closed by 192.168.1.100
Apr 15 16:01:24 lab1 sshd[27320]: Connection closed by 192.168.1.100
Apr 15 16:19:55 lab1 sshd[28134]: Connection closed by 192.168.1.100
Apr 15 16:38:30 lab1 sshd[29359]: Connection closed by 192.168.1.100
Apr 15 16:57:01 lab1 sshd[30656]: Connection closed by 192.168.1.100
Apr 15 17:15:33 lab1 sshd[31719]: Connection closed by 192.168.1.100
Apr 15 17:34:04 lab1 sshd[32744]: Connection closed by 192.168.1.100
Apr 15 17:52:35 lab1 sshd[1546]: Connection closed by 192.168.1.100
Apr 15 18:11:07 lab1 sshd[2612]: Connection closed by 192.168.1.100
Apr 15 18:29:38 lab1 sshd[3650]: Connection closed by 192.168.1.100
Apr 15 18:48:09 lab1 sshd[4972]: Connection closed by 192.168.1.100
Apr 15 19:06:42 lab1 sshd[5996]: Connection closed by 192.168.1.100
Apr 15 19:25:13 lab1 sshd[7225]: Connection closed by 192.168.1.100
Apr 15 19:43:45 lab1 sshd[8344]: Connection closed by 192.168.1.100
Apr 15 20:02:16 lab1 sshd[9419]: Connection closed by 192.168.1.100
Apr 15 20:20:47 lab1 sshd[10451]: Connection closed by 192.168.1.100
Apr 15 20:39:18 lab1 sshd[11504]: Connection closed by 192.168.1.100
Apr 15 20:57:51 lab1 sshd[12855]: Connection closed by 192.168.1.100
Apr 15 21:16:22 lab1 sshd[13909]: Connection closed by 192.168.1.100
Apr 15 21:34:58 lab1 sshd[15517]: Connection closed by 192.168.1.100
Apr 15 21:53:31 lab1 sshd[17276]: Connection closed by 192.168.1.100
Apr 15 22:12:10 lab1 sshd[20317]: Connection closed by 192.168.1.100
Apr 15 22:30:42 lab1 sshd[23226]: Connection closed by 192.168.1.100
Apr 15 22:49:13 lab1 sshd[25990]: Connection closed by 192.168.1.100
Apr 15 23:07:45 lab1 sshd[28658]: Connection closed by 192.168.1.100
Apr 15 23:26:16 lab1 sshd[31886]: Connection closed by 192.168.1.100
Apr 15 23:44:48 lab1 sshd[2209]: Connection closed by 192.168.1.100
Apr 16 00:03:19 lab1 sshd[5182]: Connection closed by 192.168.1.100
Apr 16 00:21:51 lab1 sshd[7835]: Connection closed by 192.168.1.100
Apr 16 00:40:23 lab1 sshd[10745]: Connection closed by 192.168.1.100
Apr 16 00:58:54 lab1 sshd[13471]: Connection closed by 192.168.1.100
Apr 16 01:17:27 lab1 sshd[16443]: Connection closed by 192.168.1.100
Apr 16 01:35:59 lab1 sshd[19401]: Connection closed by 192.168.1.100
Apr 16 01:54:30 lab1 sshd[22085]: Connection closed by 192.168.1.100
Apr 16 02:13:01 lab1 sshd[24749]: Connection closed by 192.168.1.100
Apr 16 02:31:33 lab1 sshd[27693]: Connection closed by 192.168.1.100
Apr 16 02:50:05 lab1 sshd[30624]: Connection closed by 192.168.1.100
Apr 16 03:08:36 lab1 sshd[647]: Connection closed by 192.168.1.100
Apr 16 03:27:07 lab1 sshd[3763]: Connection closed by 192.168.1.100
Apr 16 03:45:39 lab1 sshd[6721]: Connection closed by 192.168.1.100
Apr 16 04:04:10 lab1 sshd[9241]: Connection closed by 192.168.1.100
Apr 16 04:22:43 lab1 sshd[12154]: Connection closed by 192.168.1.100
Apr 16 04:41:12 lab1 sshd[14866]: Connection closed by 192.168.1.100
Apr 16 04:59:44 lab1 sshd[17820]: Connection closed by 192.168.1.100
Apr 16 05:18:16 lab1 sshd[20658]: Connection closed by 192.168.1.100
Apr 16 05:36:48 lab1 sshd[23458]: Connection closed by 192.168.1.100
Can somebody help me why I am getting this issue? How can I fix it ? Your help will be very much appreciated. Thanks in advance