With using below steps you can block and Allow specific IPs to take SSH without using iptables and Firewall.
Open below file,
cat /etc/hosts.allow
sshd: 192.168.0.13 : allow
sshd: ALL : deny
This will allow SSH for 192.168.0.13 IP only.
Issue: In recent upgrade of ubuntu 22.04 we are not able to login server with SSH password. but when we try to login with key then it allow...
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