Retrieve top ip threats from and add them into iptables output chain.

curl -s|grep "ipinfo.html"|awk -F"ip=" {'print $2'}|awk -F"\"" {'print $1'}|xargs -n1 sudo iptables -A OUTPUT -j DROP -d > 2&>1
Retrieve top ip threats from and add them into iptables output chain.

By: din7
2009-08-03 20:18:41

What Others Think

upvoted++ good job. But may I humbly submit that you drop the awk in favor of: ...| perl -pi -e 's/^.*ip=(.*?)".*/\1/;s/^0//' | ...
linuxrawkstar · 667 weeks ago
by the way, the perl version I just provided takes care of whacking off the leading zeros that they use to "pad" the IP addresses for easier sorting (quoting the web page). This isn't taken into account in the awk code.
linuxrawkstar · 667 weeks ago
turns out there's a much more easily scraped version provided here: It would also seem that they are padding each octet with leading zeros. In this case ... curl -s|grep -v '#'|awk '{print $1}'|perl -pi -e 's/(?:^0{1,})|(?:(?<=\.)0{1,}(?!\.))//g'
linuxrawkstar · 667 weeks ago
Maybe is a good idea to filter the ip addresses which could match with internal ones (today in that list, appeared!) curl -s|grep -v '#'|awk '{print $1}'|perl -pi -e 's/(?:^0{1,})|(?:(?
jaguasch · 667 weeks ago
Sorry: curl -s|grep -v '#'|awk '{print $1}'|perl -pi -e 's/(?:^0{1,})|(?:(?<=\.)0{1,}(?!\.))//g'|egrep -v '^192\.|^10\.|^172\.|^224\.'
jaguasch · 667 weeks ago
Great catch, jaguasch
linuxrawkstar · 667 weeks ago
Excellent work guys.
din7 · 667 weeks ago
Jaguash, I love your addition, but it will remove non-private IPs. How about this? curl -s | grep -v '#' | awk '{print $1}' | perl -pi -e 's/(?:^0{1,})|(?:(?<=\.)0{1,}(?!\.))//g' | grep -v - P '^10\.|^172\.(16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31)\.|^192\.168\.'
carmp3fan · 667 weeks ago
You could also cut the regex down a bit more. curl -s | grep -v '#' | awk '{print $1}' | perl -pi -e 's/(?:^0{1,})|(?:(?<=\.)0{1,}(?!\.))//g' | grep -v -P '^10\.|^172\.((1[6-9])|(2[0-9])|(3[0|1]))\.|^192\.168\.'
carmp3fan · 666 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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