HPING2 is a popular network tool that can generate custom ICMP/UDP/TCP packetsĪnd to display target replies like ping does with ICMP replies. Type to ECHO Reply and return the datagram to the sender (and the checksum of In the ICMP header, the code equals zero. Some data to the data field and sends the ICMP Echo to the destination host. Number (if multiple Echo Requests are sent to the same destination host), adds (used to identify Echo requests aimed at different destination hosts) and sequence The sending side initializes the identifier Port unreachable (UDP connection to non-listening port) - type 3 code Time to live expired (mostly seen during traceroutes) - type 11 codeįragmentation needed, but don't fragment flag set - type 3 code 4 (see It's defined by RFC 792 - Internet Control MessageĬonnection related messages (if a packet or a connection has problems on Is service oriented protocol that is used mainly as a feedback/query mechanism for Local cretinism is the historical curse of the security (slightly skeptical) Educational society promoting " Back to basics" movement against IT overcomplexity Softpanorama May the source be with you, but remember the KISS principle -)
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