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treatment for PCs used by guards, CCTV recording & environment sensors

What's the general security practice for such PCs?  Do we connect to the
corporate LAN (where other users do sending email, MS Office) & do we
join them to the AD?

Or they ought to have a separate LAN or just simply standalone?  

Do they need AV & signature updates (if so, is it via LAN or we manually
update) & is the backup the enterprise corporate backup or simply an
isolated standalone backup (say backup to an encrypted NAS)?
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sunhux
Asked:
sunhux
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2 Solutions
 
Lee W, MVPTechnology and Business Process AdvisorCommented:
This all depends on the computers and software and systems you want in place.

If your security software has a remote monitoring component over the LAN or internet, then it should be pretty obvious - they need to be on the LAN if you want to use that capability.  If your environmental sensors are supposed to alert you to issues via e-mail (as opposed to some kind of dialup text) then, yes, of course they need LAN access.

You should contact a security professional to evaluate your company needs and help you determine what the best way of handling this is... In GENERAL, the systems should have as limited access as possible to everything - but if you pull them off the network entirely and they have network components, then they can't work the way they should... so you really should be talking to security professionals who can examine your network and to the vendors of the software and hardware systems you use.
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sunhuxAuthor Commented:
We do have CISSP (in fact a number of them cleared the CISSP exams) but really
I'm tabling it here, hoping I get better answers as I've come across CISSP who
never heard of central authentication tools (TACACS, Radius) & Data Loss Prvntn
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Certifications don't GUARANTEE knowledge - though it can be an indicator - as with any, you need to vet them. In my opinion, you need someone who can interview you, your business, and your equipment to come up with the best answer.  In a sense, security is simple - provide access only to those who need it.  And provide resources only when those resources are deemed required.  Decide how you want to manage things, what kind of access you need to those resources, and implement technologies accordingly.
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sunhuxAuthor Commented:
That's precisely I pose it here in EE: experts are free to ask me questions
& interview & come up with recommendations
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sunhuxAuthor Commented:
This is what I think:
the amount of videos recorded can be quite considerable as we have about 350 CCTVs : thus
 the video stream could contribute to the network bandwidth thus a dedicated VLAN for
video server & PCs that connects to the CCTVs is needed, makes sense?
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sunhuxAuthor Commented:
Or videos of different sensitivity ought to be segregated into different VLANs ?
Esp if the videos are not 'encrypted' ?
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Lee W, MVPTechnology and Business Process AdvisorCommented:
You can't get / give a full understanding of the environment without documentation on the environment - what you have, what you need, what kind of business requirements you may have, legal concerns (government regulations, etc) you may have - I don't know where you are!  China?  California?  the Czech Republic?  Even if I did, I don't know if your locality has things to be concerned with.  If security is important, why wouldn't the videos be encrypted / stored on encrypted media?  What resources you have.

You now seem to want a full recommendation, from a web site forum where people don't even know what business you're in and otherwise free of charge by the expert.  Post a gig - and I'd STILL be surprised if someone took it unless you covered their travel expenses to see and inspect your environment.  Experts-Exchange has a role it can play - I think you're asking FAR too much for any professional to give an answer on.
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