Static DHCP vs MAC filtering

I have a Dlink 614+ and it has MAC filtering but also it has Static DHCP
used to allow DHCP server to assign same IP address to specific MAC
address.or What is better this or MAC filtering? RadarG

RadarG wrote:

> I have a Dlink 614+ and it has MAC filtering but also it has Static DHCP
> used to allow DHCP server to assign same IP address to specific MAC
> address.or What is better this or MAC filtering? RadarG
>
>

Maybe I don't understand what your question is, but MAC filtering has
nothing to do with the IP address. With static IP assignment, the
PC picks the IPA and does not use DHCP; with dynamic IP assignment,
the PC asks the DHCP server for an IPA. Either way, MAC filtering is
based on the MAC rather than the IPA.
--
Cheers, Bob

I'd say Static DHCP will give the same ip address to the same pc every
time. The MAC filtering is to say WHAT pc's are allowed to get ip
addresses. If you don't want out-side (of your network) pc's to be
able to get on to you network. This way if I come over and plug a pc
into you network and you have MAC filtering setup (and I'm not on the
list) my pc wouldn't get an ip address and I can't get on your
network...

"RadarG" <(E-Mail Removed)> wrote:

>I have a Dlink 614+ and it has MAC filtering but also it has Static DHCP
>used to allow DHCP server to assign same IP address to specific MAC
>address.or What is better this or MAC filtering? RadarG
>
>

These are very different issues. Static DHCP means that a client with
a given MAC address always gets the same IP address assigned to it
dynamically. This is useful if you don't want to go through the
hassles of static IP addresses for all your clients (i.e., if DNS
servers change, etc.), but still want/need certain clients to have the
same IP address. For example, we have a TCP/IP-addressable network
printer. It asks the DHCP server for an address, but the server
always gives it the same address, so that all the computers on the
network can always assume that the printer is as the same address.

MAC filtering means that your 614+ will only allow clients that have
given MAC addresses onto the network. I would recommend that your
turn this on, as it provides a pretty good (but not 100% secure) form
of security -- casual interlopers cannot get onto your network.

So you can use both static DHCP and MAC filtering. Note that static
DHCP has nothing to do with security.


"RadarG" <(E-Mail Removed)> wrote in message news:<pjSKb.26869$WQ3.10925@lakeread05>...
> I have a Dlink 614+ and it has MAC filtering but also it has Static DHCP
> used to allow DHCP server to assign same IP address to specific MAC
> address.or What is better this or MAC filtering? RadarG

Couldn't you accomplish the same thing by disabling the DHCP server and
using static DHCP? Won't this technique work the same since only the
assigned MAC devices will be served an (static) IP address?

Is one method more secure than the other or are they equivalent?


"Michael Dryja" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> These are very different issues. Static DHCP means that a client with
> a given MAC address always gets the same IP address assigned to it
> dynamically. This is useful if you don't want to go through the
> hassles of static IP addresses for all your clients (i.e., if DNS
> servers change, etc.), but still want/need certain clients to have the
> same IP address. For example, we have a TCP/IP-addressable network
> printer. It asks the DHCP server for an address, but the server
> always gives it the same address, so that all the computers on the
> network can always assume that the printer is as the same address.
>
> MAC filtering means that your 614+ will only allow clients that have
> given MAC addresses onto the network. I would recommend that your
> turn this on, as it provides a pretty good (but not 100% secure) form
> of security -- casual interlopers cannot get onto your network.
>
> So you can use both static DHCP and MAC filtering. Note that static
> DHCP has nothing to do with security.
>
>
> "RadarG" <(E-Mail Removed)> wrote in message
news:<pjSKb.26869$WQ3.10925@lakeread05>...
> > I have a Dlink 614+ and it has MAC filtering but also it has Static DHCP
> > used to allow DHCP server to assign same IP address to specific MAC
> > address.or What is better this or MAC filtering? RadarG

Roy N. wrote:

> Couldn't you accomplish the same thing by disabling the DHCP server and
> using static DHCP? Won't this technique work the same since only the
> assigned MAC devices will be served an (static) IP address?
>

You either have dhcp or you don't. "Static" dhcp is simply reserving
specific IPs for certain MACs. If you don't use dhcp, you have to use a
static configuration.

--

Fundamentalism is fundamentally wrong.

To reply to this message, replace everything to the left of "@" with
james.knott.

Roy, furthermore static dhcp isn't the same as mac filtering. With
mac filtering, the computers aren't allowed to get on the network at
all. With static dhcp, the computers are allowed to get on the
network, but just are not given ip addresses dynamically. They could
assign themselves static ip addresses and have free reign on your
network. Since the private ip addresses are limited in number, it
would be a trivial issue to figure out what ip address scheme you are
using. Whereas with mac addressing, it's much more difficult to spoof
a mac address.


James Knott <(E-Mail Removed)> wrote in message news:<J0vNb.32889$(E-Mail Removed) t.cable.rogers.com>...
> Roy N. wrote:
>
> > Couldn't you accomplish the same thing by disabling the DHCP server and
> > using static DHCP? Won't this technique work the same since only the
> > assigned MAC devices will be served an (static) IP address?
> >
>
> You either have dhcp or you don't. "Static" dhcp is simply reserving
> specific IPs for certain MACs. If you don't use dhcp, you have to use a
> static configuration.