Juniper NETWORK AND SECURITY MANAGER 2010.3, Administration Manual

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SYN Attack A SYN attack occurs when SYN packets overwhelm a network by initiating so many connection
attempts or information requests that the network can no longer process legitimate connection
requests, resulting in a Denial of Service.
syslog A protocol that enables a device to send log messages to a host running the syslog daemon
(syslog server). The syslog server then collects and stores these log messages locally.
T
T-PDU A T-PDU is the payload that is tunnelled in the GTP tunnel.
Tear Drop Attack A Tear Drop Attack occurs when the first and second parts of a fragmented packet overlap,
the server attempting to reassemble the packet can crash. If the security device sees this
discrepancy in a fragmented packet, it drops the packet.
TEID Tunnel Endpoint Identifier. The TEID uniquely identifies a tunnel endpoint in the receiving
GTP-U or GTP-C protocol entity. The receiving end side of a GTP tunnel locally assigns the
TEID value the transmitting side has to use. The TEID values are exchanged between tunnel
endpoints using GTP-C messages.
Templates A template is a device configuration that you can define once and then use for multiple devices.
You can specify most device configuration values in a template. In a template, you can define
only those configuration parameters that you want to set; you do not need to specify a complete
device configuration.
The software remembers static routes until you remove them. However, you can override static
routes with dynamic routing information through judicious assignment of administrative
distance values. To do this, you must ensure that the administrative distance of the static
route is higher than that of the dynamic protocol.
TID Tunnel Identifier.
TLS Transport Layer Security—a cryptographic protocol that provides secure communication
between the NSM UI and the NSM GUI Server.
Toolbar The toolbar is the upper section of the NSM UI. The toolbar contains icons that relate to
accessible commands.
Transmission Control
Protocol/Internet
Protocol (TCP/IP)
A set of communications protocols that support peer-to-peer connectivity functions for both
local and wide area networks. A communications protocol which enables computers with
different operating systems to communicate with each other. Controls how data is transferred
between computers on the Internet.
Triple DES (3DES) 3DES is a more powerful version of DES in which the original DES algorithm is applied in three
rounds, using a 168-bit key. DES provides a significant performance savings but is considered
unacceptable for many classified or sensitive material transfers.
Trojan A trojan is a program with hidden functionality. Trojans often install a remote administration
program (known as a backdoor) that enables attackers to access the target system.
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Network and Security Manager Administration Guide