TCP: Transmission Control Protocol
Connection-oriented
UDP: User Datagram Protocol
Connectionless
IP: Internet Protocol
IPv4: xxx.xxx.xxx.xxx (four 8-bit in written in decimal values)
2^32, about 4.3 billion addresses.
IPv6: xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx (eight 16-bit written in hexadecimal values)
2^128, about 340 undecillion addresses, which is about 340 trillion trillion trillion addresses
MAC (Media Access Control): xx:xx:xx:xx:xx:xx (six 8-bit)
xx:xx:xx - manufacturer
xx:xx:xx - serial number
All People Seem to Need Data Processing.
ARP: Address Resolution Protocol
arp -a displays current arp cache tables for all interfaces.
arp -d [ip_address] delete one or all entries in arp cache tables. Use "*" for all.
BGP: Border Gateway Protocol
DHCP: Dynamic Host Configuration Protocol (UDP Port: 67, 68)
DNS: Domain Name System (UDP Port: 53)
EGP: Exterior Gateway Protocol
FTP: File Transfer Protocol
HTTP: Hypertext Transfer Protocol (TCP Port: 80)
HTTPS: Hypertext Transfer Protocol Secure (TCP Port: 443)
ICMP: Internet Control Message Protocol
IGP: Interior Gateway Protocol
IMAP: Internet Message Access Protocol (TCP Port: 143)
Receiving emails.
NTP: Network Time Protocol (UDP Port: 123)
POP3: Post Office Protocol, version 3 (TCP Port: 110)
Receiving emails.
RIPv2: Routing Information Protocol, version 2
SFTP: SSH File Transfer Protocol (TCP Port: 22)
SMTP: Simple Mail Transport Protocol (TCP Port: 25)
Sending emails.
SNMP: Simple Network Management Protocol (UDP Port: 161)
STP: Spanning Tree Protocol (IEEE 802.1D)
SSH: Secure Shell (TCP Port: 22)
Telnet: Teletype Network Protocol (TCP Port: 23)
Not encrypted.
VoIP: Voice over Internet Protocol
DMZ: Demilitarized Zone
LAN: Local Area Network
MTU: Maximum Transmission Unit
PoE: Power over Ethernet
VLAN: Virtual Local Area Network
VLAN Trunking Protocol: IEEE 802.1Q
arp
netstat
ping