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April 8, 2019 10:14
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`fws` alias for colored iptables output, designed to play well with firewalld
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fws() { | |
for IPTABLES in iptables ip6tables | |
do | |
printf '\n\n\n\n\n' | |
printf '%*s\n' "${COLUMNS:-$(tput cols)}" '' | tr ' ' '#' | |
echo "# ${IPTABLES}" | |
printf '%*s\n' "${COLUMNS:-$(tput cols)}" '' | tr ' ' '#' | |
sudo "${IPTABLES}" -L -vnx --line-numbers | \ | |
# table header | |
sed "/^num.*/ s//$(printf "\033[33m&\033[0m")/ " | \ | |
sed "/^\s\+pkts.*/ s//$(printf "\033[33m&\033[0m")/ " | \ | |
\ | |
# chains | |
# special chain names so 'Chain' will not be renamed | |
sed "/\([^n]\s\)\(LOGDROP\)/ s//$(printf "\\\1\033[1;31m\\\2\033[0m")/ " | \ | |
sed "/\([^n]\s\+\)\(MY_\w\+\)/ s//$(printf "\\\1\033[1;34m\\\2\033[0m")/ " | \ | |
sed "/Chain\s\+\S\+/ s//$(printf "\033[34;1m&\033[0m")/ " | \ | |
\ | |
# targets | |
sed "/ DROP / s//$(printf "\033[31;1m&\033[0m")/ " | \ | |
sed "/ REJECT/ s//$(printf "\033[31;1m&\033[0m")/ " | \ | |
sed "/reject-with.*/ s//$(printf "\033[31;1m&\033[0m")/ " | \ | |
sed "/ ACCEPT/ s//$(printf "\033[32;1m&\033[0m")/ " | \ | |
sed "/ RETURN/ s//$(printf "\033[33;1m&\033[0m")/ " | \ | |
sed "/\s\[goto\]/ s//$(printf "\033[31m&\033[0m")/ " | \ | |
\ | |
# chain names | |
sed "/\sNODE/ s//$(printf "\033[34;1m&\033[0m")/ " | \ | |
sed "/\sFORWARD\w*/ s//$(printf "\033[34;1m&\033[0m")/ " | \ | |
sed "/\sFWD\w*/ s//$(printf "\033[34;1m&\033[0m")/ " | \ | |
sed "/\sIN\w*/ s//$(printf "\033[34;1m&\033[0m")/ " | \ | |
sed "/\sOUT\w*/ s//$(printf "\033[34;1m&\033[0m")/ " | \ | |
sed "/\sf2b-sshd/ s//$(printf "\033[34;1m&\033[0m")/ " | \ | |
\ | |
# ct states | |
sed "/INVALID/ s//$(printf "\033[31;1m&\033[0m")/ " | \ | |
sed "/RELATED/ s//$(printf "\033[32;1m&\033[0m")/ " | \ | |
sed "/ESTABLISHED/ s//$(printf "\033[32;1m&\033[0m")/ " | \ | |
sed "/NEW/ s//$(printf "\033[36;1m&\033[0m")/ " | \ | |
sed "/UNTRACKED/ s//$(printf "\033[36;1m&\033[0m")/ " | \ | |
\ | |
# ports | |
sed "/\([ds]pt[s]\?:\)\([0-9A-Za-z]\+\([,:][0-9A-Za-z]\+\)\?\)/ s//$(printf "\\\1\033[33;1m\\\2\033[0m")/g " | \ | |
sed "/\([ds]ports\? \)\([0-9A-Za-z]\+\([,:][0-9A-Za-z]\+\)\?\)/ s//$(printf "\\\1\033[33;1m\\\2\033[0m")/g " | \ | |
\ | |
# flags | |
sed "/\(flags:\)\(\S\+\)/ s//$(printf "\\\1\033[35;1m\\\2\033[0m")/ " | \ | |
sed "/\(ipv6-icmptype \)\(\S\+\)$/ s//$(printf "\\\1\033[36;1m\\\2\033[0m")/ " | \ | |
sed "/\(ipv6-icmp \)\(\S\+\)$/ s//$(printf "\\\1\033[36;1m\\\2\033[0m")/ " | \ | |
\ | |
# src/dst | |
sed "/anywhere/ s//$(printf "\033[37;1m&\033[0m")/g " | \ | |
sed "/\([0-9]\{1,3\}\\.\)\{3\}[0-9]\{1,3\}\(\\/\([0-9]\)\{1,3\}\)\{0,1\}/ s//$(printf "\033[37;1m&\033[0m")/g " | \ | |
sed "/\s[a-f0-9:]\{2,\}[:/][[:digit:]a-f]\{1,4\}\s/ s//$(printf "\033[37;1m&\033[0m")/g " | \ | |
\ | |
sed "/\sLOG\s/ s//$(printf "\033[34;1m&\033[0m")/ " | |
done | |
} |
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