I have a rather peculiar problem in the past 2 weeks. I have a network setup with a linux box acting as a gateway (It is exposed to the internet). Also, there are 2 additional machines that are connected to the gateway (and are not exposed to the outside world). (The gateway has a NAT setup to route traffic to/from the internal machines).
I am also hosting 2 websites on the external gateway so that it can be accessed from the outside world. I work on either of the 2 internal machines and sometimes ssh to the external gateway (from my internal machine) for any maintenance work. Recently, there were times when
1) I was NOT able to ssh to the gateway.
2) I was NOT able to access any of the websites hosted on the gateway (apache is the webserver used).
3) I AM able to access the internet as usual (i.e., the network traffic is routed properly and as usual).
There is an additional problem. i.e, when i connect my monitor, keyboard and mouse to the gateway machine, the display does not come up. :-(.
So all I am left to do is to REBOOT the system (which I heard is not a common practice in the LINUX/UNIX world). As a matter of fact, everything is OK after a REBOOT. I mean the display is there, I am able to access the internet from the internal machines, SSH to the gateway works fine and webservers are accessible.
I looked into all the log files for any suspicious activity, but could not find one. I am still worried that it could be a security issue that someone could just hack into the system and TURN off the ssh daemon and things like that.
Please let me know if you have any ideas on whatz going on??
Thank you very much.
-Ceeeyem.
Last edited by reborg; 07-17-2006 at 07:48 PM..
Reason: resotore original post
Hello reborg, i checked the system logs for any messages related to power save mode, but it does not have any of them except for the usual messages that get logged when a system boots up. i mean , these logs are the result of my reboots mentioned earlier.
Last edited by reborg; 07-17-2006 at 07:50 PM..
Reason: restore original post to start of thread
1) output of
Linux <hostname> 2.6.11-1.1369_FC4 #1 Thu Jun 2 22:55:56 EDT 2005 i686 i686 i386 GNU/Linux
2) running
on the gateway machine does not return any sensible results. For example, multiple lines like the one below is repeated.
IN=eth1 OUT= SRC=0.0.0.0 DST=255.255.255.255 LEN=304 TOS=0x00 PREC=0x00 TTL=128 ID=0 PROTO=UDP SPT=68 DPT=67 LEN=284
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