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1

For the first question: does an "allow member" statement implicitly deny everything else ? The question is answered in the manpage of dhcpd.conf: If a pool has a permit list, then only those clients that match specific entries on the permit list will be eligible to be assigned addresses from the pool. If a pool has a deny list, then only those clients ...


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Per our discussion in the comments, it sounds like you may be confusing the role of a firewall with that of a transparent proxy. Firewalls do not rely upon DNS resolution to implement access policies. There are several reasons for this that I have covered before. The most significant reasons are: Reliance upon an easily spoofed protocol Added software ...



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