For the ping utility to operate correctly through a firewall, both Echo request and Echo reply should be allowed. These are types of Internet Control Message Protocol (ICMP) messages.

Here are the steps:

1. Echo Request: This is the message sent by the ping utility to the target system. It's a request for a response.

2. Echo Reply: This is the response sent by the target system back to the originating system. It's the reply to the echo request.

3. ICMP: Both Echo Request and Echo Reply are types of ICMP messages. ICMP is a protocol used by network devices to send error messages and operational information.

4. TTL (Time to Live): This is not directly related to the operation of ping through a firewall, but it's an important concept in networking. TTL is a field in the IP header which indicates how long an IP packet can exist in a network before it's discarded.

So, to allow ping to operate correctly through a firewall, you should configure the firewall to allow ICMP Echo Request and Echo Reply messages.

Question

For the ping utility to operate correctly through a firewall, both Echo request and Echo reply should be allowed. These are types of Internet Control Message Protocol (ICMP) messages.

Here are the steps:

1. Echo Request: This is the message sent by the ping utility to the target system. It's a request for a response.

2. Echo Reply: This is the response sent by the target system back to the originating system. It's the reply to the echo request.

3. ICMP: Both Echo Request and Echo Reply are types of ICMP messages. ICMP is a protocol used by network devices to send error messages and operational information.

4. TTL (Time to Live): This is not directly related to the operation of ping through a firewall, but it's an important concept in networking. TTL is a field in the IP header which indicates how long an IP packet can exist in a network before it's discarded.

So, to allow ping to operate correctly through a firewall, you should configure the firewall to allow ICMP Echo Request and Echo Reply messages.

Knowee AI · Accepted Answer

For the ping utility to operate correctly through a firewall, both Echo request and Echo reply should be allowed. These are types of Internet Control Message Protocol (ICMP) messages.

Here are the steps:

1. Echo Request: This is the message sent by the ping utility to the target system. It's a request for a response.

2. Echo Reply: This is the response sent by the target system back to the originating system. It's the reply to the echo request.

3. ICMP: Both Echo Request and Echo Reply are types of ICMP messages. ICMP is a protocol used by network devices to send error messages and operational information.

4. TTL (Time to Live): This is not directly related to the operation of ping through a firewall, but it's an important concept in networking. TTL is a field in the IP header which indicates how long an IP packet can exist in a network before it's discarded.

So, to allow ping to operate correctly through a firewall, you should configure the firewall to allow ICMP Echo Request and Echo Reply messages.

Question 2A support technician uses the ping utility on a system that is online, yet no response is received. What should be allowed through a firewall, for ping to operate correctly? 1 pointEcho replyEcho request ICMPTTL

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