Not able to connect from ubuntu-c to any of other Hosts

[ghost]

Hi James,

When connecting from ubuntu-c to any of other hosts (ubunt1,2,3 or centos1,2,3) or vice-versa.

However I am able to ping the mentioned hosts or IPs. I was checking on each host and saw the port 22 is open., so what should be the issue here ?

Here the version of docker and docker-compose as well as the configuration of the .env file,

Any suggestion, please ?

[spurin]

Hi @Hamnlet

This is quite peculiar, you're running Linux by the look of it, could you tell me more please about the parent OS?

Thanks

James

[ghost]

Hi @spurin , I am using openSUSE Leap 15.3.

[spurin]

Do you know if selinux or any firewalls are active?

[spurin]

I've not tried the lab in Suse myself but this looks to me like there is a firewall/iptables blocking access.

Have a look through the following as this suggests to me that there may be a default firewall as part of the setup -

https://doc.opensuse.org/documentation/leap/security/html/book-security/cha-security-firewall.html

[ghost]

H, Thank you for responding. This is not tied to selinux, since its disabled. I will check the above documentation you sent relative to security/firewall and will share later any progress. Thanks,

[spurin]

Perfect thanks, as a quick check, does

systemctl status firewalld

Show as running?

[ghost]

Yes you got it.. The firewalld daemon was running, I just disabled it and try.

I was able to get ssh connection across all hosts.

[spurin]

Wow! Great to hear it's working for you @Hamnlet

That's one strict default firewall 😁

Really hope you enjoy the rest of the course and appreciate your time working through the issue.

Best Regards

James

[ghost]

Thank you very much James.