Network Configurations Flashcards
ipv4
- 4 numbers separated by dots
class A
1-127 first cotet
class B
128-191
class C
192-223
class D
224-239
- no subnet mask
- multicasting
class E
240-255
- no subnet mask
- for research/reserved
loopback address
127.0.0.1
- creates loopback to host for troubleshoot and testing network protocols
APIPA ( automatic private IP address)
uses when device does not have static IP or cannot reach DHCP server
- 169.254.0.0 to 169.254.255.255
DHCP
provides ip address to every machine on network and eliminates config errors
scope
list of valid ip addresses available within a subnet
DNS
helps network clients find website using human-readable hostnames instead of ip addresses
cname
points domain to another domain/subdomain
mx records
mail exchange
- directs emails to mail server
vlan
allows different logical networks to share same physical hardware
- virtual LAN
- provides security and efficiency
VPN
extends private network over a public network
site to site vpn
- interconnect 2 sites
client to site
client to router instead of router to router
full tunnel
routes and encrypts all network requests through VPN back to headquarters
- more secure and common
split tunnel
routes and encrypts only traffic bound for headquarters over the VPN and rest goes to internet
- less secure
- better performance
clientless
creates secure remote-access tunnel using web browser without requiring software/hardware client
- using things like TLS/HTTPS
ipv6
- larger address space
- no broadcasts
- no fragmentation
- simplified header
- can coexist with ipv4
- 4 digits each segment
dual stack
runs both ipv4 and ipv6 on same network devices
tunneling
allows existing ipv4 router to carry ipv6 traffic
unicast
used to identify single address/interface
