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How to stop hackers? Know your network


Until the perfect network monitoring tool comes along, knowledge of your network is your best defence.  Read this great article here.

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Using OPENDNS on a Mikrotik

At the office we use a Mikrotik which is connected via fibre to Cool Ideas.  We use OpenDNS as a Information Security tool.  It prevents ransomware and bots from becoming major incidents within the office.

The router is scheduled to do a daily update via script of the OpenDNS settings.  Below is the example:

:local opendnsuser "user@domain.co.za";
:local opendnspass "itsprivate";
:local opendnshost "office";

:log info "OpenDNS Update";
:local url "https://updates.opendns.com/nic/update";
/tool fetch url=($url . "\3Fhostname=$opendnshost") user=("$opendnsuser") password=("$opendnspass") mode=https dst-path=opendnsupdate.txt
:local opendnsresult [/file get opendnsupdate.txt contents];
:log info "OpenDNS: Host $opendnshost - $opendnsresult";

PUE: to compare is human – to improve is divine (part of the DS PUE series of articles)

Yes, I know – it’s an inadequate distortion of an old, clichéd proverb.  Yet, I say this too often in client meetings and peer discussions, “Don’t compare the PUE (Power Usage Effectiveness) of your data centre to that of another because it’s a pointless exercise. - Lee Smith Read the article here about Power Usage Effectiveness (PUE) in data centres on our website.

Vulnerablity management for dummies

Download vulnerability management for dummies provided by Qualys here.