How firewall works - is my IP blocked?

?I think that my Aegir instance is offline – at least I can’t access it, so how to make sure what is going on and unlock my IP address in case I’m banned on your firewall for some reason?

!You probably locked yourself, unless there is some unexpected downtime or maintenance announced on our official Twitter Timeline. The most common reason of the firewall lock is too many failed SSH log in attempts or unintended port scan. The port scan can be caused also by your e-mail client and any other software trying to connect to some not available service/port. It may be caused also by pseudo-DoS attack, like an attempt to crawl the sites with HTTrack or an attempt to benchmark the site with Apache Bench. You can easily check if this is an issue with your IP locked or something else, by using third party monitoring service (we use Pingdom) or by trying to access your Aegir instance from different IP – for example from your mobile phone. If you think your IP address is blocked, please submit Support Request

!If you are hosted on the Aegir Root Core or on your own server, and you locked yourself, you need to use another IP to connect to the server and then check if your IP address is listed in the /etc/csf/csf.deny or /etc/csf/csf.den/csf.tempban or /etc/csf/csf.tempip files. If yes, remove it and and restart firewall with ‘service csf restart’. If you wish to whitelist any IPs/range, you can add them to /etc/csf/csf.allow file and restart firewall with ‘service csf restart’.