cut-cdn: A Go repository from seqrity

Removing CDN IPs from the list of IP addresses

CDN Providers • Install • Usage Parameters • Preview • Usage • Contact me

The tool's basic functionality would involve taking the list of IP addresses as input and then checking to determine whether the IP is behind a CDN. This tool will gather all CIDR of the most-known CDN providers and check your provided list with them. This is a handy tool for bug hunters.

CDN Providers

Akamai
Arvancloud
Azure CDN
Bing
CacheFly
CafeBazaar (sotoon)
CDNetworks
Cloudflare
Cloudfront
DDoS Guard
Digitalocean
Fastly
Google cloud
Imperva
Incapsula
Leaseweb
Maxcdn
Oracle
Qrator
StackPath
StormWall
Sucuri
X4B

Installation

go install github.com/ImAyrix/cut-cdn@latest

Usage Parameters

cut-cdn -h

This will display help for the tool. Here are all the switches it supports.

Removing CDN IPs from the list of IP addresses

Usage:
  cut-cdn [flags]

Flags:
INPUT:
  -i, -ip string  Input [Filename | IP]

RATE-LIMIT:
  -t, -thread int  Number Of Thread [Number] (default 1)

CONFIGURATIONS:
  -a, -active          Active mode for check akamai
  -ua, -update-all     Update CUT-CDN Data (providers & ranges)
  -ur, -update-ranges  Update CUT-CDN Data (just ranges)

OUTPUT:
  -o, -output string  File to write output to (optional) (default "CLI")

DEBUG:
  -q, -silent   Show only IPs in output
  -v, -version  Show version of cut-cdn

Preview

Usage

Akamai

Most content delivery networks (CDNs) have their Classless Inter-Domain Routing (CIDR) blocks specified on a page on their website, which Cut CDN also receives and uses to determine whether the incoming IP is behind the CDN. However, Akamai has not publicly specified its IP range. I attempted to find the Akamai CIDRs myself and added them to the tool, which is fairly comprehensive but not entirely foolproof, and I may have overlooked some CIDRs. To ensure accuracy, you can use the "-active" key. When this switch is used, all providers are checked as before, but with the added step of actively checking for Akamai as well.

Note: If you want to check many IPs using this method, increase the number of threads so that it checks quickly and takes less time.

cut-cdn -i 127.0.0.1 -active

Basic

Check your IP list with the IP ranges of CDN providers:

Single IP

cut-cdn -i 127.0.0.1
echo "127.0.0.1" | cut-cdn

List of IPs

cut-cdn -i allIP.txt
cat allIP.txt | cut-cdn

To store results use -o option
```
cut-cdn -i allIP.txt -o output.txt
```
To set concurrency use -t option (Default is 1)
```
cut-cdn -i allIP.txt -o output.txt -t 20
```

Providers

During the initial run of the tool after installation, two files are generated in the directory ~/cut-cdn. One of these files, providers.yaml, contains the link pages where providers have specified their CIDRs. The other file, ranges.txt, contains the CIDRs of these providers.

Update Ranges

The tool will request the provider's pages again and check whether a new range has been added or not.
```
  cut-cdn -ur
```
Update Providers

This tool will query the Cut-CDN GitHub page and check if a new provider has been added or not. And then it queries the providers and checks if a new range has been added or not.
```
cut-cdn -ua
```
Manual update providers

If you yourself added a new link from the provider to the providers.yaml file, you must update the ranges once.
```
cut-cdn -ur
```

seqrity/cut-cdn