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A name server that is responsible for the root of the domain names hierarchy. There are currently a dozen root nameservers and each DNS resolver See http://www.root-servers.org/ for more information about the operation of these root servers.
round-trip-time
The round-trip-time (RTT) is the delay between the transmission of a segment and the reception of the corresponding acknowledgment in a transport protocol.
router
A relay operating in the network layer.
RPC
Several types of remote procedure calls have been defined. The RPC mechanism defined in :rfc:`5531` is used by applications such as NFS
SDU (Service Data Unit)
a Service Data Unit is the unit information transferred between applications
segment
a segment is the unit of information transfer in the transport layer
SMTP
The Simple Mail Transfer Protocol is defined in :rfc:`821`
SNMP
The Simple Network Management Protocol is a management protocol defined for TCP/IP networks.
socket
A low-level API originally defined on Berkeley Unix to allow programmers to develop clients and servers.
spoofed packet
A packet is said to be spoofed when the sender of the packet has used as source address a different address than its own.
ssh
The Secure Shell (SSH) Transport Layer Protocol is defined in :rfc:`4253`
standard query
For DNS servers and resolvers, a standard query is a query for a `A` or a `AAAA` record. Such a query typically returns an IP address.
switch
A relay operating in the datalink layer.
SYN cookie
The SYN cookies is a technique used to compute the initial sequence number (ISN)
TCB
The Transmission Control Block is the set of variables that are maintained for each established TCP connection by a TCP implementation.
TCP
The Transmission Control Protocol is a protocol of the transport layer in the TCP/IP protocol suite that provides a reliable bytestream connection-oriented service on top of IP

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Glossary

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read-only
Source string location
../../glossary.rst:117
String age
5 years ago
Source string age
5 years ago
Translation file
locale/pot/glossary.pot, string 162