Can't ping Mint 19 box no matter what

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tomlald
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Can't ping Mint 19 box no matter what

Post by tomlald » Wed Sep 19, 2018 6:07 pm

Seems like a newbie question but I can't ping this new Mint 19 box. It's a wired connection. I'm inside a local network. The firewall is off at the GUI interface and from the command line: sudo ufw disable returns "Firewall stopped and disabled on system startup". The address is manually set to 192.168.101.13, the mask is 24. Gateway is 192.168.101.1. I know I am on the correct subnet. I can't ping it from another box on the same subnet. I can ssh out. Can't ssh in obviously if I can't ping it. I have I am at a loss of what else to check. If I change to a dynamically allocated IP, same issue! Next step suggestions please.

rene
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Re: Can't ping Mint 19 box no matter what

Post by rene » Wed Sep 19, 2018 6:35 pm

Although it's nonstandard and the expectation would be you'd know if you'd disabled it... what does sysctl net.ipv4.icmp_echo_ignore_all return?

tomlald
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Re: Can't ping Mint 19 box no matter what

Post by tomlald » Tue Sep 25, 2018 10:29 am

Sorry, been on another project.

ysctl net.ipv4.icmp_echo_ignore_all

returned

net.ipv4.icmp_echo_ignore_all = 0

tomlald
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Re: Can't ping Mint 19 box no matter what

Post by tomlald » Tue Sep 25, 2018 5:57 pm

Cripes I figured it out. I configured the box with openvpn (which I forgot I did) and it was connecting on startup effectively moving the box to a different subnet. No wonder I couldn't ping it. Turned off the vpn connection and all is right with the world.

To the forum user that made a suggestion, thank you for your offering.

rene
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Re: Can't ping Mint 19 box no matter what

Post by rene » Tue Sep 25, 2018 9:32 pm

Thanks for reporting back. I'd have never thought of that...

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