Is it necessary to disable ICMP redirect

[Sergeo]

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I want to know whether it is necessary to disable ICMP redirect. What are the effects of this we leave that working on a work station. I had found that several threat associate themselves with it and cause system crash. This is a primary tool for hackers. I need some information on the working process of this service in windows.

[Shen]

An aggressor sends an ICMP echo application packet that is superior to the highest IP packet size. In view of the fact that you received ICMP echo application packet is superior to the standard IP packet size, it is fragmented. The target cannot reconstruct the packets, so the OS crashes or reboots. This is called as Ping of fatality. The ICMP flood assault is a transmit storm of pings devastate to the objective system so it cannot respond to justifiable traffic. And ICMP nuke assault means Nukes send a packet of information in sequence that the target OS cannot handle, which causes the system to crash.

[Steve123]

More than a few general tools that utilize ICMP are essential for standard administration, organization, and troubleshooting on your network. These tools contain ping, trace route, and path Maximum Transmit Unit (MTU) innovation. When you ping an objective network address, you are sending an ICMP small package with message type 8 (Echo) code 0 (Echo--application) to that address. The ICMP respond or answer small package has a message type 0 (Echo) code 0 (Echo--Reply).

[Antonio1]

When you work with a trace route to an intention to network address, you send a UDP small package with one time to live (TTL) to the intention address. The first router this small package hits diminishes the TTL to 0 and rejects the small package. At present the TTL for the small package is expired. The router sends sponsor to an ICMP message type 11 (Exceeded) code 0 (TTL--Exceeded) packet to your computer with a resource address. Your computer displays the round-trip time for that first hop and sends out the subsequently UDP packet with a TTL of 2.

[Milton.J]

This procedure carry on in anticipation of you take delivery of an ICMP message type 3 (unapproachable) code 3 (Port--unapproachable) from the intention system. Trace route is accomplished when your system receives a Port-unapproachable message. If you take delivery of a message with three asterisks [* * *] throughout the trace route, a router in the path does not come back ICMP messages. Trace route determine and continue to send UDP packets in anticipation of the objective is reached or the highest numeral of hops is exceeded.

[Spyrus]

This be able to be completed all the way through changing a registry key (please create a note of that commerce with the registry can be hazardous for your system and you be supposed to actually recognize what you are doing). In order to put out of action ICMP redirect on Windows systems, you necessitate modifying the following key: KEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters - by locating the EnableICMPRedirect entrance to 0 (in a good number cases it determine and set to active - 1 by evasion).