A small program loaded onto a system by an intruder, designed to monitor specific traffic on the network.
   The sniffer program watches for the first part of any remote login session that includes the user name, password, and host name of a person logging in to another machine.
   Once this information is in the hands of the intruder, he or she can log on to that system at will. One weakly secured network can therefore expose not only the local systems, but also any remote systems to which the local users connect.
   Sniffer is also the name of a network analyzer product from Network General.

Dictionary of networking . 2014.

Look at other dictionaries:

  • Sniffer —   [dt. »Schnüffler«], ein Programm zum unberechtigten Ausspionieren sensibler Daten. Der Sniffer wird in einem Netzwerk installiert und zeichnet wahllos vorüberkommende Datenpakete auf. Bei einer nachfolgenden Analyse können auf diese Weise Daten …   Universal-Lexikon

  • Sniffer — Ein Sniffer (engl. to sniff‚ riechen, schnüffeln) ist eine Software, die den Datenverkehr eines Netzwerks empfangen, aufzeichnen, darstellen und ggf. auswerten kann. Es handelt sich also um ein Werkzeug der Netzwerkanalyse. Inhaltsverzeichnis 1… …   Deutsch Wikipedia

  • Sniffer — Снифер Анализатор трафика, или сниффер (от англ. to sniff нюхать) сетевой анализатор трафика, программа или программно аппаратное устройство, предназначенное для перехвата и последующего анализа, либо только анализа сетевого трафика,… …   Википедия

  • sniffer — snifer ou sniffer [ snife ] v. tr. <conjug. : 1> • v. 1978; de l angl. to sniff « renifler » ♦ Anglic. (arg. de la drogue) Priser (un stupéfiant). ⇒ renifler. Snifer de la cocaïne. N. SNIF(F)EUR, EUSE . Les sniffeurs de colle. ● sniffer… …   Encyclopédie Universelle

  • Sniffer — Packet sniffer Les packet sniffers (littéralement « renifleurs de paquets », aussi connus sous le nom de renifleurs ou sniffeurs) sont des logiciels qui peuvent récupérer les données transitant par le biais d un réseau local. Ils… …   Wikipédia en Français

  • sniffer — n. 1 a person who sniffs, esp. one who sniffs a drug or toxic substances (often in comb.: glue sniffer). 2 sl. the nose. 3 colloq. any device for detecting gas, radiation, etc. Phrases and idioms: sniffer dog colloq. a dog trained to sniff out… …   Useful english dictionary

  • sniffer — noun Sniffer is used before these nouns: ↑dog …   Collocations dictionary

  • sniffer — sniff ► VERB 1) draw in air audibly through the nose. 2) (sniff at) show contempt or dislike for: the price is not to be sniffed at. 3) (sniff around/round) informal investigate something secretly. 4) (sniff out) informal discover by secret or… …   English terms dictionary

  • sniffer — noun Date: 1864 one that sniffs; especially one who takes drugs illicitly by sniffing …   New Collegiate Dictionary

  • sniffer — /snif euhr/, n. 1. a person or thing that sniffs. 2. a device or mechanism for detecting something. [1860 65; SNIFF + ER1] * * * …   Universalium

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