n.st
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sshd log contains "pam_unix authentication failure"
3 votes

Someone is trying to brute-force the password for your root user. (It doesn't matter if password login is prohibited for it — they can still try, they'll just fail every time.) You normally won't ...

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How to set up Nic.io root domain
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0 votes

The root of a domain (e.g. example.com. without any subdomain) contains important DNS records like the SOA (start of authority) record that is specific to this exact domain: $ dig example.com SOA ;; ...

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Add date using echo without calculating
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1 votes

There are a few things to improve here: cron will not notice changes made directly to the files in /var/spool/cron. Use crontab -e instead. There's also /etc/crontab, which might be preferred for ...

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SSH sessions hang on shutdown/reboot
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35 votes

When you shutdown or reboot your system, systemd tries to stop all services as fast as it can. That involves bringing down the network and terminating all processes that are still alive -- usually in ...

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SSH tunnel through two gateway servers
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1 votes

Just add a configuration stanza for each hop after the first to your ~/.ssh/config: Host testserver ProxyCommand ssh -q gateway2 nc -q0 %h 22 Host gateway2 ProxyCommand ssh -q gateway1 nc -...

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Monit monitor http status with 404 page
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14 votes

Since version 5.8, Monit has the status option: STATUS option can be used to explicitly test the HTTP status code returned by the HTTP server. If not used, the http protocol test will fail if the ...

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