CompTIA
XK0-006 · Question #156
XK0-006 Question #156: Real Exam Question with Answer & Explanation
The correct answer is C. iptables -A INPUT -s 192.168.100.0/24 --dport 631 -p tcp -j ACCEPT. Allowing access to the CUPS service requires permitting incoming TCP connections to port 631 from the local network. Adding an INPUT rule with the source network and destination port 631 ensures only hosts on that subnet can connect to the print service.
Question
A Linux administrator is configuring a CUPS print service on a Linux machine and needs to allow only connections from a local network. Which of the following commands should the administrator use?
Options
- Aiptables -A OUTPUT -d 192.168.100.0/24 --sport 631 -p tcp -j ACCEPT
- Biptables -A OUTPUT -s 192.168.100.0/24 --dport 631 -p tcp -j ACCEPT
- Ciptables -A INPUT -s 192.168.100.0/24 --dport 631 -p tcp -j ACCEPT
- Diptables -D INPUT -d 192.168.100.0/24 --dport 631 -p tcp -j ACCEPT
Explanation
Allowing access to the CUPS service requires permitting incoming TCP connections to port 631 from the local network. Adding an INPUT rule with the source network and destination port 631 ensures only hosts on that subnet can connect to the print service.
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