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how do find all failed login attempts via ssh?
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Answer / vimal kumar k, technomenace.co
Failed ssh logs are either written in /var/log/messages, or
/var/log/secure (configurable in /etc/syslog.conf). I am
assuming that the failed login attempts are recorded in
/var/log/secure:
grep ' authentication failure' /var/log/secure | sed -e
's/^\(.*\)\(rhost.*\)$/\2/p' | tr -s " " | cut -f2 -d"=" |
cut -f1 -d" " | sort -n | uniq -c
Will show you the count, and the IP/hostname of machines
that tried to access the system via ssh
| Is This Answer Correct ? | 20 Yes | 3 No |
Answer / vineeth joseph abraham
The correct way to find out fail ssh login attempts are
tail -f /var/log/secure | grep Failed
| Is This Answer Correct ? | 16 Yes | 5 No |
Answer / rani
"lastb" is the command to find all failed login attempts
| Is This Answer Correct ? | 11 Yes | 1 No |
Answer / satyadev
tail -f /var/log/secure | grep FAILED
or
lastb
| Is This Answer Correct ? | 8 Yes | 1 No |
Answer / anoop
The command is ,
cat /var/log/messages | grep "Failed password"
it will show all the user which is not able to login.
| Is This Answer Correct ? | 3 Yes | 7 No |
Answer / raj
'who' or 'w' is the command used to find the users who
logged in the system and their attempts, with the help of
some options
| Is This Answer Correct ? | 3 Yes | 19 No |
check network connectivity
check correct ipaddress
ping ipaddress
| Is This Answer Correct ? | 1 Yes | 25 No |
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