Nyx Free and Java based realtime SNMP network monitor
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Nyx Description

Free and Java based realtime SNMP network monitor Nyx is high performance network monitoring utility that allows for almost realtime IP and MAC address searching across your entire coporate network infrastructure. Written in Java, using Tomcat and MySQL as operating platform and SNMP for monitoring. Here are some key features of "Nyx": · highly parallel scanning of network devices · scanning almost in real time (one scan cycle in a 5 minute window) · designed for large and extra large networks (>100k end devices, >1k network devices) · usable also in small networks · periodical survey and logging of the network status · recognition of up- and downlonk ports for data reduction in search results · VLAN (IEEE 802.3Q) capable (depending on the network devices) · extendable to any SNMP capable type of network device · database with all your network devices · completely implemented in object oriented Java · easy extenable module based programming style · customizable web frontend based on XSLT What's New in This Release: · any small bugs fixed (i.e. bug in sql query when get manual or auto override interfaces) · bug in building the classify tree fixed · feature "traffic percentage" removed from classify tree due to ambiguity · new default classifying algorithm "random tree", kStar and naive Bayes delete since they classify very bad · new MAC hunter feature: - you can let Nyx start looking for MACs, even on filtered interfaces. · Add the MAC and an unique random string into the mac_hunter table (results are also stored there) · if you want to stop "hunting", delete ALL the entries in the table (all, or all of one MAC!) · WARNING! When you hunt for MACs, you loose performance on the database server (due to the many new queries done at EVERY switch scan!) · new MAC flooding filter/warner (when more than 500 MACs are seen on an interface you get an entry in the new mac_anomaly table and those MACs are deleted from the mac_log table) · new MAC scavanger deleter (deletes MACs "jumping" too often between two or more interfaces from the database) · new respawn feature: - when you set an interface to manual override, Nyx takes this as new input for learing algorithm · when you don't want to use respawn on an interface, write "NO RESPAWN" into the comment field (when you use manual override)

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