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The Echo Protocol is a service in the Internet Protocol Suite defined in 1983 in RFC 862 by Jon Postel. It was originally proposed as a way to test and measure an IP network. A host may connect to a server that supports the Echo Protocol using the Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP) on the well-known port ...
always 14 for the incoming SSN reset request parameter. Parameter length 8 + 2N. Fixed parameters: Re-configuration request sequence number Sequence number of this re-configuration request. Optional parameters: Stream number 1..N Stream numbers for which the SSN or MID must be reset. If none specified, all SSNs/MIDs will be reset.
A ping flood is a simple denial-of-service attack where the attacker overwhelms the victim with ICMP "echo request" packets. [1] This is most effective by using the flood option of ping which sends ICMP packets as fast as possible without waiting for replies.
This may be used to detect that the remote host was effectively woken up, by repeating a new request after some delay to allow the host to resume its network services. If the host was just sleeping in low power active state, a single request wakes up that host just enough to allow its Echo Reply service to reply instantly if that service was ...
A WebDAV request may contain many sub-requests involving file operations, requiring a long time to complete the request. This code indicates that the server has received and is processing the request, but no response is available yet. [3] This prevents the client from timing out and assuming the request was lost. The status code is deprecated. [4]
There’s no situation where you should share a six-digit verification code — not even with customer service or tech support. If someone asks you for your code, it's likely a scam. More ...
With help and contributions of the computer security community, development continued. Enhancements included operating system fingerprinting, service fingerprinting, [11] code rewrites (C to C++), additional scan types, protocol support (e.g. IPv6, SCTP [24]) and new programs that complement Nmap's core features. Major releases include: [20]
The dual unicast form is comparable with a regular ping: an ICMP echo request is sent to the patsy (a single host), which sends a single ICMP echo reply (a Smurf) back to the target (the single host in the source address). This type of attack has an amplification factor of 1, which means: just a single Smurf per ping.