Link to home
Start Free TrialLog in
Avatar of mnis2008
mnis2008

asked on

Connection Time Out - LINUX

Hello Experts
I login to my server via putty. After exactly 180 sec I cannot access the server via putty as it gives me
"Network Error: Software connection abort". So where in the server should this be set. I am running RHEL4

-Steve
Avatar of jeremycrussell
jeremycrussell
Flag of United States of America image
Is it after 180 seconds idle, or will it disconnect after 180 seconds whether the connection is idle or not?
Avatar of balasundaram_s
balasundaram_s
Goto 'Putty configuration' --> 'connection' and change the value

"Seconds between keep alives" - 15 or 60 or any value ( 15 seconds or 60 seconds ).

This would prevent putty being closed by firewall due to being inactive.  

If the Linux server is configured with the TMOUT like below:

export TMOUT=180 ( it might be configured in the profile)

Then, the client sessions gets terminated being inactive for 180 seconds.

Avatar of mnis2008
mnis2008

ASKER

I dont have the TMOUT variable set. I think its something to do with the SSH configurations. I tried to change the putty configuration but it didnot work also one more strange thing.

When I open putty and give my DMZ server name its takes couple of sec to show the login and after typing my login it takes couple sec for the password....

Once I am in the server command executions are fast....

-Steve
Avatar of maxalarie
maxalarie
Flag of Canada image
Probably an  iptable rule that drops the connection after 180 seconds.

Can you  post the output of
iptables -L -n ?
Avatar of mnis2008
mnis2008

ASKER

Yes, Here is the output

Chain INPUT (policy ACCEPT)
target     prot opt source               destination
RH-Firewall-1-INPUT  all  --  0.0.0.0/0            0.0.0.0/0

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
RH-Firewall-1-INPUT  all  --  0.0.0.0/0            0.0.0.0/0

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Chain RH-Firewall-1-INPUT (2 references)
target     prot opt source               destination
ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0
ACCEPT     icmp --  0.0.0.0/0            0.0.0.0/0           icmp type 255
ACCEPT     esp  --  0.0.0.0/0            0.0.0.0/0
ACCEPT     ah   --  0.0.0.0/0            0.0.0.0/0
ACCEPT     udp  --  0.0.0.0/0            224.0.0.251         udp dpt:5353
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0           udp dpt:631
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           tcp dpt:631
ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           state RELATED,ESTABLISHED
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:5600
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:10010
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:10011
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:10012
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:10013
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:10014
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:10015
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:14141
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:20012
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:22
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:21
REJECT     all  --  0.0.0.0/0            0.0.0.0/0           reject-with icmp-host-prohibited
ASKER CERTIFIED SOLUTION
Avatar of maxalarie
maxalarie
Flag of Canada image
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial