04-03-2006
Denying IPaddress for Multiple Failed Login Attempts
Hi. I would like to be able to deny IP address for too many failed login attemps (either from ssh, sftp, ftp, etc). The system I wish this to work on is an AIX 5.1 system. I'm new to AIX but I'm a linux user. There is a program for linux called fail2ban which reads from the log files and see if there are failed login attemps, and if there are enough (or it meets the conditions you specify) than it will do an action, such as denying all traffic from that IP. In linux this is done by adding the entry to the iptables, but I typed iptables in AIX and It (at least on the server we use) said it did not have such a command. So, does anyone know any program on AIX in which we can see where remote login attempts come from and if they fail many times in a short peorid of time we can ban that IP and drop an email to the sys admin telling them that someone was banned?
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LEARN ABOUT DEBIAN
fgetty
FGETTY(8) System Administrator's Manual FGETTY(8)
NAME
fgetty - a small getty for linux
SYNOPSIS
fgetty tty [--noclear] [--long-hostname]
DESCRIPTION
The command fgetty is normally invoked by init(8), opens a tty port, prompts for a login name and invokes the /bin/login command.
OPTIONS
--noclear makes fgetty not clear the screen before displaying the login prompt.
--long-hostname makes fgetty display the full hostname in the login prompt.
FILES
/etc/issue printed before the login prompt
/etc/inittab init(8) configuration file
/var/run/utmp the system status file
ISSUE ESCAPES
The issue-file (/etc/issue or the file may contain certain escape codes to display the system name, date and time etc. All escape codes
consist of a backslash () immediately followed by one of the letters explained below.
d the current date. (eg: 2002-01-19)
s the system name, the name of the operating system. (eg: Linux)
l the name of the current tty line. (eg: tty3)
m the architecture identifier of the machine (eg: i586)
n the nodename of the machine, also known as the hostname. (eg: sirius)
o the domainname of the machine. (eg: (none))
r the release number of the OS. (eg: 2.4.3-i)
t the current time. (eg: 14:51:51)
u the number of current users logged in. (eg: 4)
U the string "1 user" or "<n> users", where <n> is the number of current users logged in. (eg: 4 users)
v Insert the version of the OS. (eg: #2 Fre Jan 18 23:05:45 CET 2002)
ENVIRONMENT VARIABLES
HOST is set to your hostname
TERM is set to linux
TTY is set to the current tty line
RETURN VALUES
1 could not chown/chmod tty device
3 could not open tty device
4 not a typewriter
5 vhangup failed
6 could not open tty (can't happen)
7 dup failed
8 could not exec login
9 read returned an unexpected error
10 unprintable character in login name
11 login name too long (>40)
13 user name started with a dash
23 received SIGQUIT
AUTHOR
Felix von Leitner <felix-fgetty@fefe.de>
Homepage: http://www.fefe.de/fgetty/
fgetty 2002-01-19 FGETTY(8)