[PHP] cloudflare scanning method and filter script

Search cloudflare on bgp.he.net and record the ips under the asn Then zmap scans port 443

zmap -p 443 –whitelist-file=/root/full.txt -o cdn_ip.txt

The results will be saved to cdn_ip.txt

The filtering script requires php7 and php7-curl, 5.4 and above should also be able to It can be installed with apt under ubuntu16.04

apt install php7.0 php7.0-curl

Then use the filter script (see attachment) to filter

php cff.php cdn_ip.txt v.txt 300

cdn_ip.txt is the zmap scan result file, v.txt is the file that stores available IPs, and 300 is the number of processes

After running, wait until the script exits by itself, and v.txt will have available IP

Filter download (updated on 2018-12-05): cff

This is a filtered list: https://transfer.sh/ayBZi/v.txt

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