Rick van der Zwet

RRD tool en de toepassing daarvan binnen Optiver

RRDtool is the OpenSource industry standard, high performance data logging and graphing system for time series data. RRDtool can be easily integrated in shell scripts, perl, python, ruby, lua or tcl applications.

Optiver is a proprietary global market maker, trading on all major financial markets around the world, putting only its own capital at risk. Making markets in financial products is Optiver’s core business. This, in combination with a focus on finding relative pricing differences between related securities enables us to consistently add liquidity to financial markets and contribute to making markets more efficient and transparent.

Community Based Blacklists

The Internet is a happy place, but also has it's dark alleys. Botnets,
SPAM and SSH probes are just a small subset of the items to be found
in this alleys. SpamAssassin, DNSBL, SSHGuard and ipfw rules are just
a few tools of providing basic security, but each has it's pro's and
cons. I will walk you trough the setup of the applications during the

The second part will be an discussion how we could share bad host
information an reliable way, focussing on how the community work
together to provide objective, accurate and detailed blacklists
identifying the potential threat of an ``alley''.

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