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 ![Strongthium Guard](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_9dec6f7614441d14849b8ac8c0ccfbe4/strongthium-guard.svg "Strongthium Guard")
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# Strongthium Guard Discussions

Strongthium Guard keeps every door of your Linux servers shut except the ones you open, and reads their logs to ban whoever keeps knocking, within seconds. It reads the SSH, web, mail and FTP logs as they are written: password guessing, probing and port scans are banned within a second or two, with no second tool to install. A first ban lasts an hour and each repeat multiplies it, up to thirty days. A log it does not know takes a parser of a dozen lines, tried on lines you paste before it is saved. Live activity puts every attack on a world map as it happens. Block or allow whole countries, or networks by their AS number, on every port or only the ones you name; the address data keeps itself up to date. Allow and deny lists for IPv4 and IPv6, temporary bans that are lifted on time, port knocking that keeps SSH invisible until a secret knock, flood limits, dynamic DNS names for home connections, AbuseIPDB reporting and blacklists, and Cloudflare awareness. It will not lock you out: the first start allows the address you are on. The whole rule set is replaced in one step or not at all, in iptables, ip6tables and ipset, and keeps working if Guard stops. Manage it with the guard command, its settings shell, or the Guard Admin web interface; Guard Fleet shows the ports and lists of all your servers as one table and saves to all of them at once. Free edition with no time limit; paid editions for one server or many.

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