Network Uptime

SiLK

SiLK, the System for Internet-Level Knowledge, is a collection of netflow tools developed by the CERT/NetSA (Network Situational Awareness) Team to facilitate security analysis in large networks. SiLK consists of a suite of tools which collect and examine netflow data, allowing analysts to rapidly query large sets of data. SiLK was explicitly designed with a tradeoff in mind: while traffic summaries do not provide packet-by-packet (in particular, payload) information, they are also considerably more compact and consequently can be used to acquire a wider view of network traffic problems.