Network blocking

English Network/Internet
1

Suppose there are 2 openSUSE computers inside VPN networks. Addresses 192.168.0.100 and 192.168.2.100
One (192.168.0.100) blocks the network traffic of the other after 2 to 3 weeks. However, traffic from this computer that creates this barrier can go to the other computer (192.168.2.100).

There is no problem with the Networks settings.

I wonder what is the source of the problem. How can I fix?

For you to understand more clearly, I share a tracert report as an example:

Tracert 1 from 192.168.2.100:
traceroute to 192.168.0.100 (192.168.0.100), 30 hops max, 60 byte packets
1 192.168.2.100 (192.168.11.254) 0.848 ms 1.091 ms 1.545 ms
2 x.x.x.x (VPN router IP) 1.297 ms 1.323 ms 1.405 ms
3 x.x.x.x (VPN router IP) 1.949 ms 2.021 ms 2.107 ms
4 * * *
30 * * *

Tracert 2 from 192.168.0.100:
traceroute to 192.168.2.100 (192.168.2.100), 30 hops max, 60 byte packets
1 192.168.0.100 (192.168.11.254) 0.597 ms 1.452 ms 1.235 ms
2 x.x.x.x (VPN router IP) 1.297 ms 1.323 ms 1.405 ms
3 x.x.x.x (VPN router IP) 1.949 ms 2.021 ms 2.107 ms
4 192.168.2.100 (192.168.11.254) 1.542 ms 2.125 ms 11.235 ms

2

Hello,

Welcome to the openSUSE forums.

You choose OTHER VERSION for the versions of your openSUSE systems. The fact that the version is asked should have triggered you to mention what they are when not one of the supported versions offered in the choice menu.

Then something technical about the forum.
There is an important, but not easy to find feature on the forums.

Please in the future use CODE tags around copied/pasted computer text in a post. It is the # button in the tool bar of the post editor. When applicable copy/paste complete, that is including the prompt, the command, the output and the next prompt.

An example is here: Using CODE tags Around your paste.

Regards,

3

Looking at that “traceroute” output, both computers are doing what I would expect. That is, they are forwarding the packet to the default route, which should be your VPN router. In one case, that router is then further forwarding to the other computer and in the other case it isn’t.

It seems to me that you need to look at what the router is doing.

Possibly one of the computer is broadcasting route information which the router is picking up. I’m not sure why that would change after 2 weeks. Or maybe the router is generating routes from traffic that it is seeing on its interfaces.

4

Hello Dear hcvv,

Thank you very much for your lead. It will always be in my mind from now on and here I state that I will do it using these features.

Thanks again.

Best regards.

5

Hello Dear nrickert,

Thank you very much for your answer.

We could not understand why the system blocked traffic after 2 weeks. If the problem was on the network, no traffic would be sent to the computer with 192.168.0.101 suse installed (different version of suse) on the same network. I believe you can find a solution to this.

Best regards,

6

You are welcome, but you did not answer the question about the version of openSUSE the systems use.

7

Hello.

You can check the SUSE version of the computer on the network from the following.

192.168.0.100 – 11.2
others are: 15.1

Thanks in advance.

8

You still have a 11.2 openSUSE running? That stopped to be supported on 2011-01-14!!!

Not many people here will still know what the details of that system were, thus helping will be more difficult.

9

Is there anyone who can solve the problem?