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Full Discussion: Read file, grab ip with fail2ban
Top Forums Shell Programming and Scripting Read file, grab ip with fail2ban Post 302892557 by baris35 on Thursday 13th of March 2014 12:09:51 PM
Old 03-13-2014
Quote:
Originally Posted by rbatte1
If you want to block a list of users, what are they to be prevented from doing?
  • Login - change their shell to be /bin/false
  • FTP . - Add them to /etc/ftpusers
  • SFTP - Add them to the file referred to in sshd.conf
  • Everything - Change their encrypted password manually to a simple short string, so the encryption at login will never match it.

Does that help?
Robin
They cant get login to system. I am not familiar with ftp or sftp but you can run below script, add a your username into database.txt file and check what he can not do.

test.sh under /var/bin

Code:
#!/bin/bash
cd /var/test
./release_ip
./filter_accts.pl database.txt
awk '{print $1}' filtered.txt > filtered2.txt
grep -wf filtered2.txt /var/log/syslog > new.txt
sed -n '/login/p' /var/test/new.txt > /var/test/login
awk '/^[0-9.]+[.][0-9]+$/{if(!a[$0]++)print $0}' RS="[ :/\n]" login > login-ip.txt
./replace.sh
cp -p fail2ban_ip /var/test/release_ip2
sed 's/-A/-D/' release_ip2 > release_ip
chmod 755 fail2ban_ip
chmod 755 release_ip
./fail2ban_ip
iptables-save

PS: You can find filter_accts.pl file in above posts.

System time is 17:09, today is 20140313 and defined username in database.txt will be banned one hour later.
database.txt under /var/test
Code:
a_username_to_be_banned ##201403131809


under /etc/crontab
Code:
*/10 * * * * root /var/bin/test.sh

Those are what i edited by other board members' help. Not my own codes.

Regards
Boris
Last edited by baris35; 03-13-2014 at 01:16 PM..
 

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LEARN ABOUT MOJAVE

tk_ungrab

Tk_Grab(3)						       Tk Library Procedures							Tk_Grab(3)

__________________________________________________________________________________________________________________________________________________

NAME

       Tk_Grab, Tk_Ungrab - manipulate grab state in an application

SYNOPSIS

       #include <tk.h>

       int
       Tk_Grab(interp, tkwin, grabGlobal)

       void
       Tk_Ungrab(tkwin)

ARGUMENTS

       Tcl_Interp *interp (in)			 Interpreter to use for error reporting

       Tk_Window tkwin (in)			 Window on whose behalf the pointer is to be grabbed or released

       int grabGlobal (in)			 Boolean indicating whether the grab is global or application local
_________________________________________________________________

DESCRIPTION

       These  functions are used to set or release a global or application local grab.	When a grab is set on a particular window in a Tk applica-
       tion, mouse and keyboard events can only be received by that window and its descendants.  Mouse and keyboard events for windows outside the
       tree  rooted  at tkwin will be redirected to tkwin.  If the grab is global, then all mouse and keyboard events for windows outside the tree
       rooted at tkwin (even those intended for windows in other applications) will be redirected to tkwin.  If the  grab  is  application  local,
       only  mouse  and  keyboard  events  intended for a windows within the same application (but outside the tree rooted at tkwin) will be redi-
       rected.

       Tk_Grab sets a grab on a particular window.  Tkwin specifies the window on whose behalf the pointer is to be grabbed.  GrabGlobal indicates
       whether	the  grab should be global or application local; if it is non-zero, it means the grab should be global.  Normally, Tk_Grab returns
       TCL_OK; if an error occurs and the grab cannot be set, TCL_ERROR is returned and an error message is left if interp's  result.	Once  this
       call  completes	successfully,  no  window outside the tree rooted at tkwin will receive pointer- or keyboard-related events until the next
       call to Tk_Ungrab.  If a previous grab was in effect within the application, then it is replaced with a new one.

       Tcl_Ungrab releases a grab on the mouse pointer and keyboard, if there is one set on the window given by tkwin.	Once a grab  is  released,
       pointer and keyboard events will start being delivered to other windows again.

KEYWORDS

       grab, window

Tk																	Tk_Grab(3)
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