troubleshooting Question

Black Hole VLAN - Switch Best Practices

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itsystemsgroupFlag for United Kingdom of Great Britain and Northern Ireland asked on
VulnerabilitiesNetworking Hardware-OtherNetwork Security
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I am new to configuring switches and am currently configuring some Force 10 Network Switches (similar IOS to Cisco) - I have been trying to read up on some 'Best Practices' for switches and security. I know all unused ports 'should' be shutdown. That's fine. And I also know that my uplink ports need to be 'Tagged' to the VLANS traversing my network. However I keep reading about 'Black Hole' or 'Dummy' VLANS where unused ports should be 'parked'.

Currently I have moved my unused 'edgeports' to this 'Black Hole' VLAN as untagged. However what do I do with my uplink ports? Do I place them in this Black Hole VLAN as 'Tagged', 'Untagged' or leave them in the Default VLAN, VLAN 1?

1) Should the Default VLAN be completely 'empty'?
2) Should all uplink ports be tagged for all VLANS (Except the Black Hole)
3) How do I treat the uplink ports re: Default VLAN - leave them there untagged or tagged or move them to the Black hole VLAN as untagged.

Or at the end of the day is it just sufficient to just shut down the unused ports?

Codes: * - Default VLAN, G - GVRP VLANs, E - Ethernet interface
           U - Untagged, T - Tagged, Po - Port channel, ^ - Native Vlan

   VlanId  Status     Q  Ports
   ------  ---------  -  --------
*  1       Inactive   U  E    ^1/0/2 ,^1/0/3 ,^1/0/4 ,^1/0/5 ,^1/0/6 ,^1/0/7
                              ^1/0/8 ,^1/0/9 ,^1/0/10,^1/0/11,^1/0/12,^1/0/13
                      U  Po1  (1/0/47,1/0/48)^

   10      Active     U  E    ^1/0/1
                      T  E     1/0/44, 1/0/45, 1/0/46
                      T  Po1  (1/0/47,1/0/48)
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