Cannot Restore LAN Connection[solved] | Unix Linux Forums | IP Networking

  Go Back    


IP Networking Learn TCP/IP, Internet Protocol, Routing, Routers, Network protocols in this UNIX and Linux forum.

Cannot Restore LAN Connection[solved]

IP Networking


Closed Thread    
 
Thread Tools Search this Thread Display Modes
    #1  
Old 09-28-2012
OtagoHarbour OtagoHarbour is offline
Registered User
 
Join Date: Sep 2012
Last Activity: 30 September 2012, 10:17 PM EDT
Posts: 2
Thanks: 0
Thanked 1 Time in 1 Post
Cannot Restore LAN Connection[solved]

I have two servers, 198.162.0.4 and 198.162.0.10, that were connected across a LAN. They are the components of a DMZ where 198.162.0.4 is the wen server and 198.162.0.10 the application server. 198.162.0.4 is running Ubuntu 11.04 while 198.162.0.10 is running Ubuntu 11.10. I had to restart 198.162.0.10 because Unity froze up. (I have since replaced it with Gnome.) Ever since I started it up again, I cannot get connectivity with 198.162.0.4. When I try


Code:
ping 192.162.0.4

I get


Code:
PING 192.162.0.4 (192.162.0.4) 56(84) bytes of data.

That is, it just hangs. I get the same result if I try


Code:
ping 192.162.0.10

on 192.162.0.4.

I had been saving my iptables in iptables.save but now I see that that fie is of zero size for some reason although I had a lot of rules in the IPtable. I tried to fix the problem with


Code:
sudo iptables -A OUTPUT -s 192.162.0.4 -j ACCEPT
sudo iptables -A OUTPUT -d 192.162.0.4 -j ACCEPT
sudo iptables -A INPUT -s 192.162.0.4 -j ACCEPT
sudo iptables -A INPUT -d 192.162.0.4 -j ACCEPT

but it has no effect.

Any assistance would be most appreciated,
Peter.
Sponsored Links
    #2  
Old 09-29-2012
jim mcnamara jim mcnamara is offline Forum Staff  
...@...
 
Join Date: Feb 2004
Last Activity: 24 April 2014, 4:36 PM EDT
Location: NM
Posts: 10,066
Thanks: 253
Thanked 760 Times in 714 Posts
Unity under 11.04 onward had a lot of bugs and user complaints.

As root have you run dhclient since the reboot?

Did you make changes with ethtool before the reboot? (this would be my first place to check because ethtool changes are kernel persistent only)
Sponsored Links
    #3  
Old 09-30-2012
OtagoHarbour OtagoHarbour is offline
Registered User
 
Join Date: Sep 2012
Last Activity: 30 September 2012, 10:17 PM EDT
Posts: 2
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by jim mcnamara View Post
Unity under 11.04 onward had a lot of bugs and user complaints.

As root have you run dhclient since the reboot?

Did you make changes with ethtool before the reboot? (this would be my first place to check because ethtool changes are kernel persistent only)
This is embarrassing but my problem was a typo in the iptables. I was typing 192.162.0.4 where it should have been 192.168.1.4.

Sorry about that,
Peter.
The Following User Says Thank You to OtagoHarbour For This Useful Post:
jim mcnamara (09-30-2012)
    #4  
Old 09-30-2012
jim mcnamara jim mcnamara is offline Forum Staff  
...@...
 
Join Date: Feb 2004
Last Activity: 24 April 2014, 4:36 PM EDT
Location: NM
Posts: 10,066
Thanks: 253
Thanked 760 Times in 714 Posts
That is okay, getting an answer back as to why is great.
Sponsored Links
Closed Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

More UNIX and Linux Forum Topics You Might Find Helpful
Thread Thread Starter Forum Replies Last Post
[SOLVED] Console connection to V240 kuriosity_prime Solaris 6 09-11-2012 02:38 PM
Solaris 10 ftp connection problem (connection refused, connection timed out) labdakos Solaris 4 07-30-2010 07:51 AM
IP routing table restore anid IP Networking 0 05-16-2010 12:55 PM
mksysb restore - Wrong OS level for restore pobman AIX 0 12-10-2008 10:36 PM



All times are GMT -4. The time now is 07:38 PM.