Special Forums Cybersecurity Failed SSHD Login Attempts (15,000 per day) - Is that a lot compared to your server? Post 303039279 by Neo on Saturday 28th of September 2019 12:11:05 AM
FYI.

Normally, I do not run automatic banning systems, but after reviewing fail2ban again, I see the ban is configured out-of-the-box to only ban for a short period.

So, am testing fail2ban on all my Linux servers.

However, I agree with you stomp, that changing the sshd port from 22 to another value is one of the best deterrents agains these bots.

The same is also true for web software, for example Word Press. The best way to stop bot registrations, bot logins and spam posts is to change the URL of the registration, log in or posting scripts.

Also, having said that, I was hoping not to quickly get into remediation and risk management; but to get more people to post their FLAPM stats; using our simple method, so we could gather more stats.
 
Test Your Knowledge in Computers #673
Difficulty: Medium
Norman Abramson, a professor at the University of Hawaii, developed the first wireless computer communication network, ALOHAnet.
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LOGIN(1)						      General Commands Manual							  LOGIN(1)

NAME
login - sign on SYNOPSIS
login [ -p ] [ username ] DESCRIPTION
The login command is used when a user initially signs on, or it may be used at any time to change from one user to another. The latter case is the one summarized above and described here. See "How to Get Started" for how to dial up initially. If login is invoked without an argument, it asks for a user name, and, if appropriate, a password. Echoing is turned off (if possible) during the typing of the password, so it will not appear on the written record of the session. After a successful login, accounting files are updated and the user is informed of the existence of mail. The message of the day is printed, as is the time of his last login. Both are suppressed if he has a ".hushlogin" file in his home directory; this is mostly used to make life easier for non-human users, such as uucp. Login initializes the user and group IDs and the working directory, then executes a command interpreter (usually csh(1)) according to spec- ifications found in a password file. Argument 0 of the command interpreter is the name of the command interpreter with a leading dash ("-"). Login also modifies the environment environ(7) with information specifying home directory, command interpreter, terminal type (if avail- able) and user name. The `-p' argument causes the remainder of the environment to be preserved, otherwise any previous environment is dis- carded. If the file /etc/nologin exists, login prints its contents on the user's terminal and exits. This is used by shutdown(8) to stop users log- ging in when the system is about to go down. Login is recognized by sh(1) and csh(1) and executed directly (without forking). FILES
/var/run/utmp accounting /usr/adm/wtmp accounting /usr/spool/mail/* mail /etc/motd message-of-the-day /etc/passwd password file /etc/nologin stops logins .hushlogin makes login quieter SEE ALSO
init(8), getty(8), mail(1), passwd(1), passwd(5), environ(7), shutdown(8), rlogin(1c) DIAGNOSTICS
"Login incorrect," if the name or the password is bad. "No Shell", "cannot open password file", "no directory": consult a programming counselor. BUGS
An undocumented option, -r is used by the remote login server, rlogind(8C) to force login to enter into an initial connection protocol. -h is used by telnetd(8C) and other servers to list the host from which the connection was received. 4th Berkeley Distribution November 27, 1996 LOGIN(1)

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