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Admin Notes for SSH Service

fail2ban

We run fail2ban to monitor the authentication logs and apply bans when there are too many login failures for accounts. Occasionally this causes problems for users who are using the wrong password. To unban an IP address for someone do the following (e.g. IP address is 1.2.3.4):

nsu
fail2ban-client set sshtcpwrap unbanip 1.2.3.4

You can verify this had the desired effect by checking the contents of /etc/hosts.deny

-- StephenQuinney - 21 Jan 2019

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Topic revision: r1 - 21 Jan 2019 - 14:01:14 - StephenQuinney
 
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