how do vlans work? I always hear just put everything on a separate vlan for security but at my job we have hundreds of vlans but with rules so they can all talk to each other. What’s the point besides organization is there if they all can talk to each other?

Question

So for example I’m on vlan 5 and another computer is on vlan 40 I can log into that machine remotely access all the same shares everything. Is there still security being on separate vlans or is it moot cause they all can talk to each other?

In: Technology

Answer 1

Vlans separate traffic across your physical network. Your company doesnt have ACLs in place to prevent access, but the vlans are still useful for mitigating potential problems.

If one faulty NIC goes crazy, it affects just the devices on that same vlan.

Also, vlans are useful for controlling filtering of devices in some firewalls/content filters. For example, we have Student devices on their own vlan/subnet so we can filter them more strictly.