Well-Known TCP/IP Port Numbers, Service Names & Protocols

Well-Known TCP/IP Port Numbers, Service Names & Protocols About TCP/UDP Ports. Port 0 to 1023: These TCP/UDP port numbers are known well-known ports. These ports are assigned to specific server sevice by the Internet Assigned Numbers Authority (IANA). For example, port 80 is used by web servers. DHCP debugging with tcpdump | The Sysadmin Wiki | Fandom tcpdump filter to match DHCP packets including a specific Client MAC Address: tcpdump -i br0 -vvv -s 1500 '((port 67 or port 68) and (udp[38:4] = 0x3e0ccf08))' tcpdump filter to capture packets sent by the client (DISCOVER, REQUEST, INFORM): tcpdump -i br0 -vvv -s 1500 '((port 67 or port 68) and Port Forwarding: DHCP reservations and static IP addresses

Overview of common TCP and UDP Default Ports

List of Well-Known TCP Port Numbers - Webopedia Reference Nov 02, 2017

Firewall ports between domain controllers

Firewall ports between domain controllers Feb 08, 2018 Tcpdump Examples - 22 Tactical Commands | HackerTarget.com May 27, 2018