I am learning penetration testing recently, but unfortunately most of the sources are currently unavailable
Therefore, the landlord summarizes several sources that can be used here.
#Official source
deb http://http.kali.org/kali kali-rolling main contrib non-free
deb-src http://http.kali.org/kali kali-rolling main contrib non-free
#中科大学 kali source
deb http://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib
take it, no thanks