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Security => CSF Firewall => Topic started by: facata on March 18, 2021, 07:09:21 AM

Title: Firewall
Post by: facata on March 18, 2021, 07:09:21 AM
Hello everybody.

I keep receiving e-mail about block IP like this:

lfd: (sshd) Failed SSH login from 221.181.185.141 (CN/China/-): 5 in the last 3600 secs - Fri Mar 5 15:09:57 2021
lfd: (sshd) Failed SSH login from 179.112.119.206 (BR/Brazil/179-112-119-206.user.vivozap.com.br): 5 in the last 3600 secs - Fri Mar 5 16:14:05 2021
lfd: (sshd) Failed SSH login from 222.187.222.55 (CN/China/-): 5 in the last 3600 secs - Fri Mar 5 17:57:38 2021   
lfd: (sshd) Failed SSH login from 12.221.85.22 (US/United States/-): 5 in the last 3600 secs - Fri Mar 5 18:03:49 2021   

Is this normal ? Can I stop this ? Or can I change port ???


thanks
Title: Re: Firewall
Post by: Sandeep on March 18, 2021, 10:32:55 PM
its bruteforce attack by the kid hackers but beware they can be successful if your password is small and dictionary based
Title: Re: Firewall
Post by: facata on March 19, 2021, 11:54:02 AM
Is it possible to stop this by disabling ssh log in shell or changing a port ???
Title: Re: Firewall
Post by: Sandeep on March 19, 2021, 02:18:33 PM
yes we recommend always to change ssh port
Title: Re: Firewall
Post by: facata on March 22, 2021, 07:25:36 AM
ok thanks I will do that....
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