IP ADDRESSING Flashcards
DHCP Process
Works on local subnet router enabled with IP helper request. Client broadcasts to UDP 67 to DHCP server then they offer to client using 68 to broadcast UDP. Client chooses first offer received. Then DHCP acknowledges
APIPA
Link Local its automatic allowing to communicate in LAN but not WAN 169.254.0.1 - 169.254.255.254
Using IP ADDRESSING
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VPN (SECURE SOCKETS)
Uses SSL/TLS (TCP 443)
Client to Site VPN
Passes through VPN concentrator as encrypted data
LAN
Group of devices on same network
Virtual LAN (VLAN)
Using a single network then logically seperating it example “Guest Wifi”
NAT
Translates on IP to another example “ Subnet local IP” Then converts to “WAN IP”
Internet Connection Types
Ready?
Cable Modem
DOCSIS (data over cable service interface connection) , Considered High speed
DSL Modem
ADSL(Asymetric digital subscriber line) Distance from central office is problem for speed
Dialup
Uses telephone line 56k/bits SLOW
Fiber
Highspeed connection
Satellite
50 DOWNLOAD 3 UPLOAD , CONNECTS VERY REMOTE, HIGH LATENCY
ISDN
BRI - Basic rate interface, PRI-primary rate interface