510 Software Group opened for business in 1983, delivering custom software solutions in a variety of environments.
We design and implement custom software solutions on either a fixed price or T&M basis. A fixed price works well for any project where the cost of precisely specifying the software development task is much less than the cost of producing the software. An hourly (time and materials) basis is used when it is difficult to precisely specify the task, or where the task IS the development of a precise specification for a piece of software.
We offer consulting services to help define your network, file server, internet access needs, and spam blocking/filtering options.
Almost everyone running an internet visible mail server is familiar with the reasons they should not be running an open mail relay. But many people running internet visible DNS servers apparently have not received the message that running an open recursive resolver is also bad for many of the same reasons that open relays are bad. Are your DNS servers also open recursive resolvers? More important, have all the DNS servers in your infrastructure been hardened against the Kaminsky attack? Do your DNS servers have dnssec checking enabled? Have you digitally signed the public zones for which your DNS servers are authoritative?