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Because ICMP traffic, notably ICMP ECHO REQUEST-0 and ECHO REPLY-8 are used in network diagnostic sequences.
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What does ping response mean in C?
To ping is to issue an ICMP Type 8 (ICMP Echo Request) to a host which according to RFC1122 it must reply to. (In reality this may be seen as a security risk.). The format of a successful response has type and code of 0. If you're operating down at this level you'll need to examine ICMP in more detail. If you have a sockets interface then you may just get a reply event. Sometimes people call these "pongs". ie Ping? Pong. Ping? Pong.
How do you stop excessive pings to your server?
Block them at the router. Understand, however, that ICMP Echo Request/Reply (Ping) is a standard network troubleshooting tool, and that disabling it can compromise the ability to troubleshoot certain problems.
Which port is used by ICMP?
There really is no "port" for icmp but there is a icmp code. If you are looking for the icmp code for echo-reply it is 0 and the echo is 8 For an access list you could do the following: permit icmp any any echo-reply permit icmp any any echo Or the same using the icmp code permit icmp any any 0 permit icmp any any 8
What port is used for icmp echo re quest?
There really is no "port" for icmp but there is a icmp code. If you are looking for the icmp code for echo-reply it is 0 and the echo is 8 For an access list you could do the following: permit icmp any any echo-reply permit icmp any any echo Or the same using the icmp code permit icmp any any 0 permit icmp any any 8
Which protocol is implicitly denied at the end of an IPv4 access list?
Standard ACLs filter IP packets at the source address only. Extended ACLs filter IP packets based on other protocols including; source and destination IP addresses, source and destination TCP and UDP ports and protocol types (IP, ICMP, UDP, TCP & Protocol No). The protocol that is implicitly denied due to filtration is HTTP.
What computer protocol should be blocked to prevent malicious traffic and Trojan's?
Pretty much every protocol used for malicious traffic and Trojans is also used for legitimate traffic. You cannot block all bad traffic just by filtering on protocols. When given that ICMP and HTTP are both allowed, if you have to block one, block ICMP. Choices were: DNS DHCP ICMP HTTP https://library.skillport.com/courseware/cbtlib/TPSY0201/metadata/eng/TPSY0201B.htm?
What port does icmp belong to?
ICMP does not have a port like TCP and UDP.
Why is it that an ICMP packet does not have source and destination port?
Because ICMP is on the network layer
Which ICMP message contain part of the ip datagram?
All ICMP Error Messages
Where the icmp request are originated?
icmp request is orginated on the OSI network layer with ip protocol.
Which protocol should be allowed when not able to ping a remote device residing behind a firewall?
ICMP is the internet control access protocol . ICMP is the plrotocol that should be allowed when not able to ping a remote device residing behind a firewall. ICMP is the protocol of network layer.
What is the response if a host sends a ICMP to a default gateway?
If devices on a network are properly configured, a host sending ICMP to a default gateway must receive a reply. ICMP simply means ping.
What transport layer protocol does ping use?
Assuming IPv4 ICMP. Ping uses IP for transport. Ping in itself is an "Echo Request", which is a function of the ICMP protocol. The IP Packet will carry the ICMP protocol from end-to-end. ICMP has a protocol number of 1, so the "Protocol" field in the IPv4 header will contain "1" as a reference to the ICMP payload. For IPv6, ICMPv6 is used, and the transport will be IPv6.
Does ICMP operate at the Transport layer?
no
