Upload
randall-floyd
View
219
Download
2
Tags:
Embed Size (px)
Citation preview
DNSDOMAIN NAME SYSTEM NAME SYSTEM
By Lijo George
WHY DOES ANYONE NEED
DNS ?
BROWSING WITH DNS
BROWSING W/O DNS
HISTORY
HOST NAME RESOLUTION
HOST NAME RESOLUTION
DDNS ARCHITECTURE
FQDN
ROOT NAME SERVERS
A - VeriSign Global Registry Services
B - Information Sciences Institute
C - Cogent Communications
D - University of Maryland
E - NASA Ames Research Center
F - Internet Systems Consortium, Inc.
G - U.S. DOD Network Information Center
H - U.S. Army Research Lab
I - Autonomica/NORDUnet
J - VeriSign Global Registry Services
K - RIPE NCC
L - ICANN
M - WIDE Project
TLDs
PRIVATE DOMAINS
DNS QUERY
DNS RESOLUTION PROCESS
SAMPLE RESOLUTION
CACHING
DNS RESOLVER CACHE
DNS SERVER CACHE
DNS ZONES
TTL
DNS RECORDS
DNS RECORDS
DNS RECORDS
DNS RECORDS
ONLINE TOOLS