A network administrator is tasked to block all outbound SSH connections on the default port from a network subnet of 10.152.8.0/21 on a Linux based firewall. Which of the following rule sets would accomplish this task?
A. iptables -i OUTPUT -d 10.152.8.0/21 -p TCP --dport 22 -j REJECT
B. iptables -i OUTPUT -d 10.152.8.0/21 -p TCP --dport 23 -j REJECT
C. iptables -i OUTPUT -d 10.152.8.0/21 -p TCP --dport 22 -j ACCEPT
D. iptables -i OUTPUT -d 10.152.8.0/21 -p TCP --dport 23 -j ACCEPT
Answer: A. iptables -i OUTPUT -d 10.152.8.0/21 -p TCP --dport 22 -j REJECT
You might also like to view...
A system administrator has multiple computers, of the same make and model that will remotely turn on using Wake-On-LAN (WOL). All but two systems wake correctly. Which of the following is the MOST likely problem with the two systems?
A. WOL is not enabled in the BIOS. B. The computers do not support WOL functionality. C. The network card settings in Windows are incorrect. D. Power settings are incorrect in the BIOS
When working with Microsoft Access 2016, Zafar adds fields in Design view and wishes to switch to Datasheet view to enter records. He clicks the View button before saving the table design. Which of the following is a consequence of Zafar's action??
A. ?The table is automatically saved and Datasheet view is opened. B. ?The error value "#VALUE" is displayed. C. ?Microsoft Access switches to Datasheet view and the fields are lost. D. ?Microsoft Access reminds him to save the table.