Compare an item in one line of a file against an item in the next line of the same file Post: 303045909

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Top Forums Shell Programming and Scripting Compare an item in one line of a file against an item in the next line of the same file Post 303045909 by championc on Friday 17th of April 2020 05:48:41 PM

04-17-2020

Registered User

Thanks for taking the time to reply

I am trying to work with a firewall ruleset. Every DROP rule should have a partner LOG rule. But from the following, you can see that two rules do not have a corresponding LOG rule. So I am trying to process the file and identify all rules I have a DROP but no LOG. The two offenders in this selection below are in BOLD

Code:

set security firewall name Private-to-AA rule 25 action 'drop'
set security firewall name Private-to-AA rule 9999 action 'drop'
set security firewall name Private-to-AA rule 9999 'log'
set security firewall name Private-to-BB default-action 'drop'
set security firewall name Private-to-BB 'default-log'
set security firewall name Private-to-CC default-action 'drop'
set security firewall name Private-to-CC 'default-log'
set security firewall name Private-to-CC rule 9999 action 'drop'
set security firewall name Private-to-CC rule 9999 'log'
set security firewall name Private-to-DD default-action 'drop'
set security firewall name Private-to-DD 'default-log'
set security firewall name Private-to-DD rule 9999 action 'drop'
set security firewall name Private-to-DD rule 9999 'log'
set security firewall name local default-action 'drop'
set security firewall name local rule 10 action 'drop'
set security firewall name local rule 10 'log'

championc

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LEARN ABOUT DEBIAN

arno-iptables-firewall

ARNO-IPTABLES-FIREWALL(8)												 ARNO-IPTABLES-FIREWALL(8)

NAME

       arno-iptables-firewall - Single- & multi-homed firewall script with DSL/ADSL support.

SYNOPSIS

       /etc/init.d/arno-iptables-firewall [start|stop|status|force-reload|restart]

DESCRIPTION

       arno-iptables-firewall  is  an  iptables configuration script with support for both IPv4 & IPv6.  While it is extremely easy to use one can
       nevertheless use it in quite complicated environments.

       All available options are explained in the extensively documented configuration file.

       The external interface of the system needs to be set up properly in the firewalls configuration file (EXT_IF).  The default behavior of the
       firewall is to deny all incoming connections.

       For  additional	requirements not covered by the configuration file custom iptables rules can be placed in /etc/arno-iptables-firewall/cus-
       tom-rules.  This file is automatically parsed by the service script.

       See the README file (eg. in /usr/(local/)share/doc/arno-iptables-firewall) for an example how to manage logging of firewall events  through
       syslogd.

       The arno-fwfilter script can be used to make the firewall logs more readable for humans (see manpage).

       Several plugins for the firewall script are available online. Plugins can be downloaded from http://rocky.eld.leidenuniv.nl/ Please see the
       README file for more information.

FILES

       /etc/init.d/arno-iptables-firewall	       system service script
       /etc/arno-iptables-firewall/firewall.conf       firewall configuration
       /etc/arno-iptables-firewall/conf.d/	       firewall configuration directory
       /etc/arno-iptables-firewall/custom-rules        custom iptables rules
       /etc/arno-iptables-firewall/blocked-hosts       host blacklist
       /etc/arno-iptables-firewall/mac-addresses       mac filter list

       Please note, that the last two files do exist in the initial configuration and their use is disabled  in  /etc/arno-iptables-firewall/fire-
       wall.conf

SEE ALSO

       iptables(8), arno-fwfilter(1), syslog.conf(5)

       The http://rocky.eld.leidenuniv.nl/ web site.

AUTHOR

       arno-iptables-firewall was written by Arno van Amersfoort <arnova@rocky.eld.leidenuniv.nl>.

       This manual page was written by Michael Hanke <michael.hanke@gmail.com>, for the Debian project (but may be used by others).

Michael Hanke							  March 14, 2012					 ARNO-IPTABLES-FIREWALL(8)