ipextract

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Introduction

These are a couple of shell tools to extract useful TCP/IP related information: ipextract : extracts IP addresses from stdin ipextractnet : extracts IP addresses with netmask from stdin ipextracttcp : extracts tcp port (of form 123/tcp) from stdin ipextractudp : extracts udp port (of form 123/udp) from stdin ipextractsctp : extracts sctp port (of form 123/sctp) from stdin ipextractfqdn : extracts FQDN (and IP addresses) from stdin

Usage

Use by sourcing it from your shell:

. ipextract

Real world

then run some of the scripts:

$ ipextract < /etc/hosts 127.0.0.1 255.255.255.255 $

For some example of real use: ipextractfqdn < /var/log/snort/alert | sort -u dmesg | ipextractudp netstat -an | ipextractplusport ifconfig | ipextract6

Automate usage:

Add it to your bashrc (or other RC file) for automatic inclusion e.g.: echo '. ~/bin/ipextract/ipextract' >> .bashrc