nanog mailing list archives
Re: Is NAT can provide some kind of protection?
From: Scott Helms <khelms () ispalliance net>
Date: Wed, 12 Jan 2011 15:44:27 -0500
No it really doesn't. Thank you for leaving the key word when you quoted me (configured). The difference is the _default_ behavior of the two. NAT by _default_ drops packets it doesn't have a mapped PAT translation for. Home firewalls do not _default_ to dropping all packets they don't have a rule to explicitly allow. The behaviors when configured by someone knowledgeable behave the in a similar fashion (allowing packets that are configured to pass and dropping all others) but end users don't do that as a rule.
On 1/12/2011 3:31 PM, Chris Adams wrote:
Once upon a time, Scott Helms<khelms () ispalliance net> said:Few home users have a stateful firewall configuredYes, they do. NAT requires a stateful firewall. Why is that so hard to understand?
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Current thread:
- Re: Is NAT can provide some kind of protection?, (continued)
- Re: Is NAT can provide some kind of protection? Jack Bates (Jan 13)
- Re: Is NAT can provide some kind of protection? William Herrin (Jan 13)
- Re: Is NAT can provide some kind of protection? Lamar Owen (Jan 13)
- Re: Is NAT can provide some kind of protection? Owen DeLong (Jan 13)
- Re: Is NAT can provide some kind of protection? Owen DeLong (Jan 12)
- Re: Is NAT can provide some kind of protection? Paul Ferguson (Jan 12)
- Re: Is NAT can provide some kind of protection? Steven Kurylo (Jan 12)
- Re: Is NAT can provide some kind of protection? Owen DeLong (Jan 12)
- Re: Is NAT can provide some kind of protection? Scott Helms (Jan 12)
- Re: Is NAT can provide some kind of protection? Chris Adams (Jan 12)
- Re: Is NAT can provide some kind of protection? Scott Helms (Jan 12)
- Re: Is NAT can provide some kind of protection? david raistrick (Jan 12)
- Re: Is NAT can provide some kind of protection? Jack Bates (Jan 12)
- Re: Is NAT can provide some kind of protection? Miquel van Smoorenburg (Jan 12)
- Re: Is NAT can provide some kind of protection? Scott Helms (Jan 12)
- Re: Is NAT can provide some kind of protection? Owen DeLong (Jan 12)
- Re: Is NAT can provide some kind of protection? Scott Helms (Jan 12)
- Re: Is NAT can provide some kind of protection? Jack Bates (Jan 12)
- Re: Is NAT can provide some kind of protection? Valdis . Kletnieks (Jan 12)
- Re: Is NAT can provide some kind of protection? Owen DeLong (Jan 12)
- Re: Is NAT can provide some kind of protection? Lamar Owen (Jan 13)