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The WireGuard protocol is a variant of the Noise Protocol Framework IK handshake pattern, as illustrated by the choice of Noise_IKpsk2_25519_ChaChaPoly_BLAKE2s for the value of the Construction string listed on p10 of the Whitepaper. WireGuard uses the following: [8] Curve25519 for key exchange; ChaCha20 for symmetric encryption
Path MTU Discovery (PMTUD) is a standardized technique in computer networking for determining the maximum transmission unit (MTU) size on the network path between two Internet Protocol (IP) hosts, usually with the goal of avoiding IP fragmentation.
TCP is a connection-oriented protocol [4] and sessions are established with a three-way handshake using SYN packets and ended by sending a FIN notification. [5] The firewall can use these unique connection identifiers to know when to remove a session from the state table without waiting for a timeout.
The server has to spend resources waiting for half-opened connections, which can consume enough resources to make the system unresponsive to legitimate traffic. [ 1 ] [ 2 ] The packet that the attacker sends is the SYN packet, a part of TCP 's three-way handshake used to establish a connection.
In computing, a handshake is a signal between two devices or programs, used to, e.g., authenticate, coordinate. An example is the handshaking between a hypervisor and an application in a guest virtual machine .
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It is believed that the analytics system is using side-channel (such as the handshake headers, and packet sizes) to estimate how suspicious a connection is. [56] It is able to detect traffic protocols (such as SSH tunneling, VPN or Tor protocols), and can measure the entropy of packets to detect encrypted-over-encrypted traffic (such as HTTPS ...
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