Hacking Exposed 7, 7th Edition

APPENDIX APORTS

Ports are the windows and doors of the cyberworld. Although there are other listening protocols (ICMP, IGMP, etc.), listening ports come in basically two major flavors: TCP and UDP. The following ports list is by no means a complete one. In addition, some of the applications we present here may be configured to use entirely different ports to listen on (for example, running a web server on port 12345 instead of port 80 or 443). However, this list gives you a good start in finding the holes that an attacker will exploit given the first chance he or she can get. For a more comprehensive listing of ports, see iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xml or nmap.org/data/nmap-services.