Presentación sobre DNS para las charlas de conocimiento compartido de OmbuShop, Tu Tienda Online. Vemos conceptos básicos de redes: DNS, IP, TCP, UDP, A records, MX records, TTL. Explicamos de una forma simple cómo configurar una tienda online para que se pueda ver en un dominio en particular.

1. DNS 101

2. Application Layer (HTTP, FTP, DNS, DHCP, SMTP,
SSH, POP, LDAP, IMAP, etc.)
Transport Layer (TCP, UDP, etc.)
Internet Layer (IPv4, IPv6, ICMP, IPSec, etc.)
Link Layer (MAC, PPP, ISDN, Ethernet, DSL, etc.)

3. DNS entities
client name server
top level domain (.ar) doman registry
server

4. DNS entities
chrome 37.0 name server
(ns27.aws.com)
server
(50.16.123.45)
top level domain (.ar) doman registry
(ombushop.com.ar -> ns27.aws.com)

5. Terminal’s `host` (Mac OS X)
etagwerker:~/ $ host ombushop.com.ar
ombushop.com.ar has address 50.16.123.45
etagwerker:~/ $ host ombushop.com
ombushop.com has address 50.16.123.45
ombushop.com mail is handled by 1 aspmx.l.google.com.
ombushop.com mail is handled by 10 aspmx2.googlemail.com.
ombushop.com mail is handled by 10 aspmx3.googlemail.com.
ombushop.com mail is handled by 5 alt1.aspmx.l.google.com.
ombushop.com mail is handled by 5 alt2.aspmx.l.google.com.

6. DNS
1. www.nombre.com -> IP
2. CNAME record
3. A record
4. MX récord
5. TTL

7. IP Address
etagwerker:~/ $ host ombushop.com
ombushop.com has address 50.16.123.45

8. CNAME records
etagwerker $ host www.vidrieras.in
www.vidrieras.in is an alias for appname.herokuapp.com.
appname.herokuapp.com is an alias for us-east-1-a.route.herokuapp.com.
us-east-1-a.route.herokuapp.com has address 23.21.130.129

9. A records
etagwerker $ host ombushop.com
ombushop.com has address 50.16.123.45

10. MX records
etagwerker $ host ombushop.com
ombushop.com mail is handled by 1 aspmx.l.google.com.
ombushop.com mail is handled by 10 aspmx2.googlemail.com.
ombushop.com mail is handled by 10 aspmx3.googlemail.com.
ombushop.com mail is handled by 5 alt1.aspmx.l.google.com.
ombushop.com mail is handled by 5 alt2.aspmx.l.google.com.

11. TTL
ombushop.com
@ A - 50.16.123.45 - TTL: 3600 segundos
www A - 50.16.123.45 - TTL: 3600 segundos

12. DNS entities
chrome 37.0 Fibertel’s DNS
(ombushop.com.ar -> 50.16.123.45)
server
(50.16.123.45)

13. ¡Gracias!
!
(Crea tu tienda online con tu propio dominio)