Network not working

[Crow]

Some time ago, after an update the connection between computers broke, I can't share directories through NFS and I was just using an external HD to move files but we can't play using the local network and that is a problem now.

I've searched and tried some posts but use to take for granted some knowledge I don't have

Does anybody have a step by step guide on how to recover my network?

[muungwana]

you are mixing up two concepts.

1. File sharing through NFS btw two computers on the network.
2. Two computer's inability to see each other over the network.

The first problem could be caused by an NFS service either not running or misconfigured.

The second problem could be caused by a firewall blocking needed ports or if those computers are on different networks.

Which one of the two do you think is the primary problem?

what do you mean by "now we cant play using the local network"?

[Crow]

muungwana Thank you for your interest.

I mentioned the two problems because both began at the same time.

I try to share directories by NFS using PCC and doesn't mount, a well known problem in PCLOS

By "now we cant play using the local network" I mean games, my kids and me used to play in team Linux games like Battle for Wesnoth or Windows games in Wine like Serious Sam and Sacred.

[muungwana]

Inability to play games over the network suggests a firewall problem.

open the terminal, log in as root and then run these two commands and give their output

cat /etc/fstab

iptables -L -v

[T6]

yes, both problems are not related but could have the same cause

did you used a static ip addres on one machine and not in the other?

it could be helpful to check the ethernet adapter/wifi to see if you changed something and you might not remember

i know that such suggestion sounds dumb but i did it two times, then i called tech support because i couldn't get on internet     

[Crow]

Here's what I found:

Code: [Select]

crow@localhost ~]$ su
Password:
[root@localhost crow]# cat /etc/fstab
# Entry for /dev/sda5 :
UUID=53f59a74-2b65-4a38-a72a-96b04565badc / ext4 defaults 1 1
none /dev/pts devpts defaults 0 0
# Entry for /dev/sda6 :
UUID=df93a86f-f3b9-4f72-83f5-da1a560400ec /home ext4 defaults 1 2
linux-2:/media/CH_DATOS /mnt/CH_DATOS nfs rsize=8192,wsize=8192,nosuid,soft 0 0
linux-2:/home/crow/Downloads /mnt/Downloads nfs rsize=8192,wsize=8192,nosuid,soft 0 0
/media/CH_DATOS/Downloads:/media/CH_DATOS/Downloads /mnt/Downloads1 nfs rsize=8192,wsize=8192,nosuid,soft 0 0
none /proc proc defaults 0 0
# Entry for /dev/sdb5 :
UUID=73e81843-0cf5-4bd3-bd27-f7b9283bb959 swap swap defaults 0 0
[root@localhost crow]# iptables -L -v
Chain INPUT (policy ACCEPT 455 packets, 88927 bytes)
 pkts bytes target     prot opt in     out     source               destination

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination

Chain OUTPUT (policy ACCEPT 440 packets, 45561 bytes)
 pkts bytes target     prot opt in     out     source               destination
[root@localhost crow]#


And no, I don't use static IP

[muungwana]

what is the IP address of a computer with a hostname of "linux-2"?

you are using a hostname for your nfs shares and your computer must be able to resolve them to an IP address.

Most people use IP addresses for their networked nfs shares. If you prefer to use hostnames, add their associated IP addresses in "/etc/hosts" text file.

Open the text file with roots privileges and then add the "hostname" name with its associated IP address in it. There should be atleast one entry in it and the entry will tell you the format.

Are you running a firewall? Those IP tables rules says you arent running any and this suggests a problem is not due to a firewall.

[Crow]

IP address of a computer with a hostname of "linux-2"

Code: [Select]

[crow@localhost ~]$ ifconfig
eth0      Link encap:Ethernet  direcciónHW 90:FB:A6:29:AC:CE  
          Direc. inet:192.168.1.64  Difus.:192.168.1.255  Másc:255.255.255.0

And no, I'm not running a firewall. I'm connected to internet by an access point which in turn goes to a switch that distributes the internet.

Let me try that

[Crow]

This is what I have in hosts

# generated by drakconnect
127.0.0.1 localhost.localdomain localhost

[muungwana]

add this line to the text file

192.168.1.64    linux-2

after you have added the line and save the file.

Open the terminal, log in as root and then type this command and give any output if any

mount /mnt/Downloads

Then go to "/mnt/Downloads" folder and see if all files on "linux-2:/home/crow/Downloads" computer are these. Make sure nfs is running first on a computer with a hostname of "linux-2"