D-Link Forums
		The Graveyard - Products No Longer Supported => Routers / COVR => DIR-600 => Topic started by: Lars-Erik on December 15, 2011, 09:42:32 AM
		
			
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				I notice that SPI is disabled by default on the DIR-600 (in firmware 2.10 and 2.11 as well).
 Is there a reason for this?
 Port forwarding still works with SPI on (use it for BitTorrent).
 So why is it off by default?
 Does it slow down things?
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				SPI is a firewall packet inspection system. Firewall. It can effect some performance however not a lot. It's recommended that it be turn on. You can turn off any 3rd party firewall SW on PCs as router firewalls are very effective in handling network traffic problems SPI sees.