I understand how port knocking can throw off nmap and reduce brute force traffic. Does it solve anything else? > I believe there are sshd vulns extant that yo

I understand how port knocking can throw off nmap and reduce brute force traffic. Does it solve anything else? > I believe there are sshd vulns extant that you and I don't know about and port knocking allows me to worry less about them. Wouldn't you need to worry about vulnerabilities in knockd?