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Fail2ban without proactive mode

wmarquardt asked: Is there any way to configure Fail2ban to just log suspicious activities without change my firewall rules? My answer: fail2ban includes a dummy banaction which does (almost) nothing. …

Ensuring SSH Idle Connection TimeOut

PerennialN00b asked: In response to ClientAliveInterval and ClientAliveCountMax restrictions server side, a client can choose to send null packets by setting ServerAliveInterval and ServerAliveCountMax values appropriately. How can I still …

LibSSH authentication bypass

I-P-X asked: With the recent security announcement by libssh (CVE-2018-10933) I wonder how to find out if any of my running services use the vulnerable library? I will eventually yum …