We have moved

Please note from 19th July 2017 our new address is Somerdata Ltd The Old Weighbridge Underwood Business park Wells BA5 1AF Telephone Number:01179634050 now available Contact us by email, sales@somerdata.com

Windows Updates across AROW (WSUS)

In order to keep Windows clients updated on your disconnected network you need to connect to the Windows update service.  Clearly with your network protected  by AROW, this is not an option.  Hopefully your normal practice is to control your… Continue reading →

Using AROW with Rsyslog

Domain boundary protection can be a problem for sysadmins who need to collate information from multiple sources. The utility rsyslog is often used to enable the system logs from multiple sources to be sent to a single admin monitor. The… Continue reading →

AROW Data Diode- Prevent Network Data Theft

Somerdata’s AROW Optical Wormhole Data Diode  is available for all commercial customers as well as at the top level of security classification. AROW is available in 3 options, as an entry level single channel, an enterprise  level dual channel version… Continue reading →

UDP Tunelling through Data Diodes

If you have multiple UDP streams of data, perhaps video cctv, audio, low-latency data or a mix, how do you send these through a single data diode? The AROW data diode is natively TCP so we can explore some of… Continue reading →

Data Diode content filtering

Somerdata is pleased to highlight  more open source material aimed at applications in suppport of Data Diodes – content filtering. This set of Python scripts checks pdf, image , html, XML and MS Office files for hidden content, and where… Continue reading →

AROW Optical Data Diode Performance

AROW Performance Testing Data Diodes perform an essential function by preventing data falling into the wrong hands. However a Data Diode is yet another element in the already complex network, so what is the effect on performance and how can… Continue reading →

Data Diodes in Process Control

  In a typical highly networked complex industrial process (see diagram) there are many potential access points for data retrieval, management and control. Plant operators need detailed control of the operating process, plant supervisors need monitoring and override control, office… Continue reading →

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