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Basic Security

Created by dave. Last edited by dave, 13 years and 38 days ago. Viewed 2,174 times. #2
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Basic Security Consideration

By default, the R910 accepts telnet connections to it's WAN interface. This would let some enterprising door-knocker on the wrong side of the system potentially get access to your firewall.

I added a rule to the filter set active on my WAN interface to prevent this:

Change Output Filter 2

Enabled: Yes Forward: No

Source IP Address: your.internet.ip.address Source IP Address Mask: 255.255.255.255

Dest. IP Address: 0.0.0.0 Dest. IP Address Mask: 0.0.0.0

Protocol Type: TCP Source Port Compare… Equal Source Port ID: 23 Dest. Port Compare… No Compare Dest. Port ID: 0 Established TCP Conns. Only: No

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This is a collection of techical information, much of it learned the hard way. Consider it a lab book or a /info directory. I doubt much of it will be of use to anyone else.

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