SERVER LINUX:How to block delete peers ip

How to block delete peers ip

THANKS @PANTGR

'' Hello all i looked on my server and i noticed some freezes, all settings where good ... what was going wrong? ... after lot of testings when i opened my /tmp/warnings.txt log file and looked inside, i noticed that some ip's spamed my server all time trying to log in with fake or deleted accounts and i wondered:is this the problem ? .....the answer is yes this was the problem :) on my first test i blocked all ip's on this file using my firewall (shorewall) and my server stoped freezing ..... but it was a pain every day to add block rules on those ip's listed on /tmp/warnings.txt ....so, after lot of search on Debian pack's i found this nice program



[Only registered and activated users can see links. Click Here To Register...]
that generates auto block rules on "bad" ip's that spam your server :)My server now works fast again, my protection from attacks is automatic and doesn't require to add all the time rules by hand on my firewall :)

How to install this nice program :)
(i tested fail2ban on Debian and work perfect )
(first log in on server as root)
1)#apt-get install fail2ban
2)#nano /etc/fail2ban/jail.conf (change only this lines ---->)



# Fail2Ban configuration file.
#
# This file was composed for Debian systems from the original one
# provided now under /usr/share/doc/fail2ban/examples/jail.conf
# for additional examples.
#
# To avoid merges during upgrades DO NOT MODIFY THIS FILE
# and rather provide your changes in /etc/fail2ban/jail.local
#
# Author: Yaroslav O. Halchenko <debian@onerussian.com>
#
# $Revision: 281 $
#

# The DEFAULT allows a global definition of the options. They can be override
# in each jail afterwards.

[DEFAULT]

# "ignoreip" can be an IP address, a CIDR mask or a DNS host
ignoreip = 127.0.0.1 192.168.1.72 (-----> add here all local ip's that fail2ban ignores)
bantime = 6000 (----> set the time that ip's are blocked 600 is in sec's)
maxretry = 3

# "backend" specifies the backend used to get files modification. Available
# options are "gamin", "polling" and "auto".
# yoh: For some reason Debian shipped python-gamin didn't work as expected
# This issue left ToDo, so polling is default backend for now
backend = polling

#
# Destination email address used solely for the interpolations in
# jail.{conf,local} configuration files.
destemail = root@localhost

#
# ACTIONS
#

# Default banning action (e.g. iptables, iptables-new,
# iptables-multiport, shorewall, etc) It is used to define
# action_* variables. Can be overriden globally or per
# section within jail.local file
banaction = iptables-multiport

# email action. Since 0.8.1 upstream fail2ban uses sendmail
# MTA for the mailing. Change mta configuration parameter to mail
# if you want to revert to conventional 'mail'.
mta = sendmail

# Default protocol
protocol = tcp

#
# Action shortcuts. To be used to define action parameter

# The simplest action to take: ban only
action_ = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s]

# ban & send an e-mail with whois report to the destemail.
action_mw = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s]
%(mta)s-whois[name=%(__name__)s, dest="%(destemail)s", protocol="%(protocol)s]

# ban & send an e-mail with whois report and relevant log lines
# to the destemail.
action_mwl = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s]
%(mta)s-whois-lines[name=%(__name__)s, dest="%(destemail)s", logpath=%(logpath)s]

# Choose default action. To change, just override value of 'action' with the
# interpolation to the chosen action shortcut (e.g. action_mw, action_mwl, etc) in jail.local
# globally (section [DEFAULT]) or per specific section
action = %(action_)s

#
# JAILS
#

# Next jails corresponds to the standard configuration in Fail2ban 0.6 which
# was shipped in Debian. Enable any defined here jail by including
#
# [SECTION_NAME]
# enabled = true

#
# in /etc/fail2ban/jail.local.
#
# Optionally you may override any other parameter (e.g. banaction,
# action, port, logpath, etc) in that section within jail.local
#(add cccam rule to so fail2ban start's looking for cccam spammers)
[cccam]

enabled = true
port = 12000 (---->cccam server port)
filter = cccam (----> This is the filter file name that makes cccam to search for bad peers on cccam log file and ban them)
logpath = /var/log/daemon.log
maxretry = 10 (---> after how many failed log in retry's the ip will be banned)

[ssh] (---> this is the rule that is needed to block ssh login fails)

enabled = true
port = ssh
filter = sshd
logpath = /var/log/auth.log
maxretry = 6

# Generic filter for pam. Has to be used with action which bans all ports
# such as iptables-allports, shorewall
[pam-generic]

enabled = false
# pam-generic filter can be customized to monitor specific subset of 'tty's
filter = pam-generic
# port actually must be irrelevant but lets leave it all for some possible uses
port = all
banaction = iptables-allports
port = anyport
logpath = /var/log/auth.log
maxretry = 6

[xinetd-fail]

enabled = false
filter = xinetd-fail
port = all
banaction = iptables-multiport-log
logpath = /var/log/daemon.log
maxretry = 2


[ssh-ddos]

enabled = false
port = ssh
filter = sshd-ddos
logpath = /var/log/auth.log
maxretry = 6

#
# HTTP servers
#

[apache]

enabled = false
port = http,https
filter = apache-auth
logpath = /var/log/apache*/*error.log
maxretry = 6

# default action is now multiport, so apache-multiport jail was left
# for compatibility with previous (<0.7.6-2) releases
[apache-multiport]

enabled = false
port = http,https
filter = apache-auth
logpath = /var/log/apache*/*error.log
maxretry = 6

[apache-noscript]

enabled = false
port = http,https
filter = apache-noscript
logpath = /var/log/apache*/*error.log
maxretry = 6

[apache-overflows]

enabled = false
port = http,https
filter = apache-overflows
logpath = /var/log/apache*/*error.log
maxretry = 2

#
# FTP servers
#

[vsftpd]

enabled = false
port = ftp,ftp-data,ftps,ftps-data
filter = vsftpd
logpath = /var/log/vsftpd.log
# or overwrite it in jails.local to be
# logpath = /var/log/auth.log
# if you want to rely on PAM failed login attempts
# vsftpd's failregex should match both of those formats
maxretry = 6


[proftpd]

enabled = false
port = ftp,ftp-data,ftps,ftps-data
filter = proftpd
logpath = /var/log/proftpd/proftpd.log
maxretry = 6


[wuftpd]

enabled = false
port = ftp,ftp-data,ftps,ftps-data
filter = wuftpd
logpath = /var/log/auth.log
maxretry = 6


#
# Mail servers
#

[postfix]

enabled = false
port = smtp,ssmtp
filter = postfix
logpath = /var/log/mail.log


[couriersmtp]

enabled = false
port = smtp,ssmtp
filter = couriersmtp
logpath = /var/log/mail.log


#
# Mail servers authenticators: might be used for smtp,ftp,imap servers, so
# all relevant ports get banned
#

[courierauth]

enabled = false
port = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
filter = courierlogin
logpath = /var/log/mail.log


[sasl]

enabled = false
port = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
filter = sasl
logpath = /var/log/mail.log


# DNS Servers


# These jails block attacks against named (bind9). By default, logging is off
# with bind9 installation. You will need something like this:
#
# logging {
# channel security_file {
# file "/var/log/named/security.log" versions 3 size 30m;
# severity dynamic;
# print-time yes;
# };
# category security {
# security_file;
# };
# }
#
# in your named.conf to provide proper logging

# Word of Caution:
# Given filter can lead to DoS attack against your DNS server
# since there is no way to assure that UDP packets come from the
# real source IP
[named-refused-udp]

enabled = false
port = domain,953
protocol = udp
filter = named-refused
logpath = /var/log/named/security.log

[named-refused-tcp]

enabled = false
port = domain,953
protocol = tcp
filter = named-refused
logpath = /var/log/named/security.log
Now it's time to add a filter that reads cccam log file and grabs the ip that will be banned after 10 login fails :)

2)#nano /etc/fail2ban/filter.d/cccam.conf
add this on the blank file :)



# Fail2Ban configuration file
#
# Author: Cyril Jaquier
#
# $Revision: 510 $
#

[Definition]

# Option: failregex
# Notes.: regex to match the password failures messages in the logfile. The
# host must be matched by a group named "host". The tag "<HOST>" can
# be used for standard IP/hostname matching and is only an alias for
# (?:::f{4,6}:)?(?P<host>\S+)
# Values: TEXT
#
failregex = shaper CCcam: deleting client <HOST>, signature failed

# Option: ignoreregex
# Notes.: regex to ignore. If this regex matches, the line is ignored.
# Values: TEXT
#
ignoreregex =
*(---> failregex = shaper(-----> on this line u need to add your Linux pc name my pc name is: shaper ---->shaper:~# or look on /var/log/daemon.log) CCcam: deleting client <HOST>, signature failed
3) edit cccam.conf and enable this option -->(DEBUG : yes)to make cccam start logging in daemon.log file
4) #/etc/init.d/fail2ban restart
5)and all now everything is done. go on /var/log/ and open fail2ban log file to check the status of fail2ban and what ip's are banned .

AND


one new filter to ban ppl to use my c line on 2 box



# Fail2Ban configuration file
#
# Author: Cyril Jaquier
#
# $Revision: 510 $
#

[Definition]

# Option: failregex
# Notes.: regex to match the password failures messages in the logfile. The
# host must be matched by a group named "host". The tag "<HOST>" can
# be used for standard IP/hostname matching and is only an alias for
# (?:::f{4,6}:)?(?P<host>\S+)
# Values: TEXT
#
failregex = , remove stale connection \(<HOST>\)

# Option: ignoreregex
# Notes.: regex to ignore. If this regex matches, the line is ignored.
# Values: TEXT
#
ignoreregex =
save this one like cccam1.conf and add on the jail.conf . ''