Metro Ethernet Security

Installing a Metro Ethernet that goes from a colo to our corporate office.  Should I route all traffic from the Metro Ethernet through my firewalls? or is the traffic safe since it's technically just a long ethernet cable? I don't want to create unnessesary hops if I don't need to, but I want to make sure that there is a very minimal chance someone can hack into my Metro Ethernet.

Thanks in advance
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if it is physicall just a long ethernate cable where you control both entry nodes, then you're save without additional firewalls (assuming that nobody can access this cable physically).
Dave HoweSoftware and Hardware EngineerCommented:
There isn't a simple answer to this one - its a security topology question.
The real question to ask is - do I unreservedly trust the machine at the colo not to compromise my network?
If it's entirely under your control and not accessible from the internet, then that's a no-brainer, if its web-facing, you are probably better off treating it as though it were a local webserver and place it in a dmz - so though the firewall.
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