Fptn is a simple HTTP DoS utility which can create a lot of different kinds of HTTP requests. By default it utilizes keep-alive connection to keep TCP connections open for multiple requests. This is useful in situations, when firewall blocks multiple connection attempts from one address. Keep alive can be switched off with -keep-alive=false param.
Requests are executed in loop on workers (concurrent go routines). Default number of workers is 20 per URL, but can be set to any number with -workers param.
Random content payload is attached to each request by default. It's 1MB in size, but can be changed with parameter -payload-length (in kB) or disabled with -payload-length=0.
All responses from server (not only 2xx) are taken as success. Errors count include only faulty requests without server response (unreachable host, connection reset, ...).
Fptn is using packages from standard library only. So build is easy as this:
go build fptn.go
Prepare list of target URLs in text file, each URL on separate line. Then run fptn like this:
$ cat targets.txt
https://kremlin.ru
https://mil.ru
https://rkn.gov.ru
$ ./fptn -sites-file=targets.txt
Other parameters to fptn:
-delay int
Sleep time in milliseconds between each request per worker. Can be increased for keep-alive attacks similar to slowloris
-error-file string
Where to write all errors encountered. File is truncated on each execution (default "/dev/null")
-keep-alive
Whether to use keep-alive connections (true), or initiate new TCP connection on each request (false) (default true)
-method string
HTTP method to use. Use HEAD for low bandwidth attacks (default "GET")
-payload-length int
Payload length in kilobytes. Random content payload is attached to each request. Disable payload with value 0 (default 1024)
-site string
Site URL to attack (default "https://kremlin.ru")
-sites-file string
Path to file with URLs, each on a new line (default "./sites.txt")
-workers int
Number of workers per URL (default 20)