Спасибо!
Но, вот что получилось:

root@kali:~# apt-get update
Reading package lists... Done
root@kali:~# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@kali:~# apt-get install lighttpd
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package lighttpd is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'lighttpd' has no installation candidate
root@kali:~# apt-get install bettercap
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package bettercap
root@kali:~# apt-get install isc-dhcp-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package isc-dhcp-server
root@kali:~#