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2nd Subnet Firewall Rules

  • cazahenha
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04 Jan 2010 15:34 #59621 by cazahenha
2nd Subnet Firewall Rules was created by cazahenha
Hi everyone,

I set up a 2nd subnet on a 2820Vn for a couple of our servers here and everything seemed to be working fine, however I noticed that with the default "filter" rules set to pass, I was able to access these servers from the WAN without any filters defined. I tested with a server on the 1st Subnet and I could not reach it without defining a filter of some sort or using open port. Is this by design, should the 2nd subnet be accessible in this way?

I then changed the default filter rule to "block" and this then worked as expected stopping WAN access to the 2nd subnet until I had added filters but I now have to add filters in BOTH directions for everything including the first subnet which is a bit of a pain. I suppose I could use another router and True IP to protect the second subnet, but it seems that this should work without doing so. The servers are also protected with IP Tables however I would just like to take precaution with the routers firewall.

Any feedback appreciated...

Caza

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