Can a Slow Post HTTP attack be done from a single client?
The following source cites this line: https://medium.com/fantageek/understanding-socket-and-port-in-tcp-2213dc2e9b0c
Ports are 16-bit numbers, therefore the maximum number of connections any given client can have to any given host port is 64K.
But since the max. number of connections a server can handle is usually much greater than the above limit (around ~300k but scalable), I assume that the Slow Post HTTP attack can only be done as a DDoS attack (using more than 1 client).
But I can also see descriptions about Slow Post HTTP attack as DoS attack. For eg. https://blog.qualys.com/securitylabs/2011/11/02/how-to-protect-against-slow-http-attacks states
Slow HTTP attacks are denial-of-service (DoS) attacks in which the attacker sends HTTP requests in pieces slowly, one at a time to a Web server.
Please let me know if I am missing something.