
SAD 2º asir
Authored by Rodrigo Castellano del Rio
Computers
Professional Development
Used 1+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué ventaja principal ofrece Squid como proxy caché?
Encriptación de datos
Reducción del tráfico mediante almacenamiento local
Protección contra virus
Autenticación biométrica
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué comando bloquea el tráfico SMTP saliente en Squid?
http_access deny CONNECT
acl bloqueoport 25 + http_access deny bloqueo
iptables -A OUTPUT -p tcp --dport 25 -j DROP
cache_peer 192.168.1.10 parent 3128
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para redireccionar tráfico HTTP al puerto de Squid (3128) en Linux, se usa:
iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 3128
squid -k reconfigure
route add default gw 3128
sysctl -w net.ipv4.ip_forward=1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué cadena de iptables gestiona paquetes que atraviesan el firewall sin destino local?
INPUT
OUTPUT
FORWARD
POSTROUTING
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué comando bloquea todas las conexiones SSH entrantes?
iptables -A INPUT -p tcp --dport 22 -j DROP
iptables -P INPUT ACCEPT
iptables -A OUTPUT -p udp --dport 53 -j ACCEPT
iptables -t nat -L
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La política por defecto iptables -P FORWARD DROP implica:
Se permiten todos los paquetes en tránsito
Se registran los paquetes pero no se bloquean
Se rechazan todos los paquetes no permitidos explícitamente
Solo afecta a tráfico IPv6
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué filtro muestra solo tráfico DNS en Wireshark?
tcp.port == 53
dns
http.request
ip.addr == 8.8.8.8
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