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Mscgen (short for MSC generator) is a software tool for drawing message sequence charts [1] from a simple to manage text-based source file. Rendered charts can be output in PNG, SVG and PostScript, with hyperlink information in ismap format.
The 1996 version added references, ordering and inlining expressions concepts, and introduced HMSC [1] (High-level Message Sequence Charts), which are the way of expressing a sequence of MSCs. The MSC 2000 version [2] added object orientation, refined the use of data and time in diagrams, and added the concept of remote method calls. [3]
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TCP sequence numbers and receive windows behave very much like a clock. The receive window shifts each time the receiver receives and acknowledges a new segment of data. Once it runs out of sequence numbers, the sequence number loops back to 0. When a receiver advertises a window size of 0, the sender stops sending data and starts its persist ...
A TCP sequence prediction attack is an attempt to predict the sequence number used to identify the packets in a TCP connection, which can be used to counterfeit packets. [1] The attacker hopes to correctly guess the sequence number to be used by the sending host. If they can do this, they will be able to send counterfeit packets to the ...
This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Modified version of TCP state diagram, with receipt of ACK added as requirement for CLOSING->TIME_WAIT and LAST_ACK->CLOSED transitions. The original can be viewed here: Tcp state diagram fixed.svg: . Modifications made by Scil100.
When a client sends back a TCP ACK packet to the server in response to the server's SYN+ACK packet, the client must (according to the TCP spec) use n+1 in the packet's Acknowledgement number, where n is the initial sequence number sent by the server. The server then subtracts 1 from the acknowledgement number to reveal the SYN cookie sent to ...
Includes a 'sequence number', which increases every time the source node makes up a new version of the message. This message is sent to all the nodes on a network. As a necessary precursor, each node in the network remembers, for every one of its neighbors, the sequence number of the last link-state message which it received from that node ...