| slovo | definícia |
network address
(foldoc) | network address
network number
1. The network portion of an IP address. For a
class A network, the network address is the first byte of
the IP address. For a class B network, the network address
is the first two bytes of the IP address. For a {class C
network}, the network address is the first three bytes of the
IP address. In each case, the remainder is the {host
address}. In the Internet, assigned network addresses are
globally unique.
See also subnet address, Internet Registry.
2. (Or "net address") An electronic mail address on {the
network}. In the 1980s this might have been a bang path but
now (1997) it is nearly always a domain address. Such an
address is essential if one wants to be to be taken seriously
by hackers; in particular, persons or organisations that
claim to understand, work with, sell to, or recruit from among
hackers but *don't* display net addresses are quietly presumed
to be clueless poseurs and mentally flushed.
Hackers often put their net addresses on their business cards
and wear them prominently in contexts where they expect to
meet other hackers face-to-face (e.g. {science-fiction
fandom}). This is mostly functional, but is also a signal
that one identifies with hackerdom (like lodge pins among
Masons or tie-dyed T-shirts among Grateful Dead fans). Net
addresses are often used in e-mail text as a more concise
substitute for personal names; indeed, hackers may come to
know each other quite well by network names without ever
learning each others' real monikers.
See also sitename, domainist.
[Jargon File]
(1997-05-10)
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network address
(jargon) | network address
n.
(also net address) As used by hackers, means an address on ‘the’ network
(see the network; this used to include bang path addresses but now
always implies an Internet address). Net addresses are often used in email
text as a more concise substitute for personal names; indeed, hackers may
come to know each other quite well by network names without ever learning
each others' ‘legal’ monikers. Display of a network address (e.g. on
business cards) used to function as an important hacker identification
signal, like lodge pins among Masons or tie-dyed T-shirts among Grateful
Dead fans. In the day of pervasive Internet this is less true, but you can
still be fairly sure that anyone with a network address handwritten on his
or her convention badge is a hacker.
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network address translation
(foldoc) | Network Address Translation
NAT
Network Address Translator
(NAT, or Network Address Translator, Virtual LAN)
A technique in which a router or firewall rewrites the
source and/or destination Internet addresses in a packet as
it passes through, typically to allow multiple hosts to
connect to the Internet via a single external IP address.
NAT keeps track of outbound connections and distributes
incoming packets to the correct machine.
NAT is an alternative to adopting IPv6 (IPng). It allows
the same IP addresses (10.x.x.x is the conventional range) to
be used on many private local networks while requiring only
one of the increasingly scarce public addresses to be
allocated to each private network.
NAT does not however allow an external service to initiate a
TCP connection to an internal host, nor does it support
stateless protocols based on UDP well unless the router
software has extensions to support each specific protocol.
(2005-09-18)
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network address translator
(foldoc) | Network Address Translation
NAT
Network Address Translator
(NAT, or Network Address Translator, Virtual LAN)
A technique in which a router or firewall rewrites the
source and/or destination Internet addresses in a packet as
it passes through, typically to allow multiple hosts to
connect to the Internet via a single external IP address.
NAT keeps track of outbound connections and distributes
incoming packets to the correct machine.
NAT is an alternative to adopting IPv6 (IPng). It allows
the same IP addresses (10.x.x.x is the conventional range) to
be used on many private local networks while requiring only
one of the increasingly scarce public addresses to be
allocated to each private network.
NAT does not however allow an external service to initiate a
TCP connection to an internal host, nor does it support
stateless protocols based on UDP well unless the router
software has extensions to support each specific protocol.
(2005-09-18)
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network addressable unit
(foldoc) | Network Addressable Unit
(NAU) The SNA term for an addressable entity.
Examples include PUs, LUs, and SSCPs.
(1997-05-10)
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