questions about router and gateway

plz tell me the diffrence between router and gateway

kontia wrote:

> plz tell me the diffrence between router and gateway
>
A router is a piece of hardware that acts as a gateway.

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CJT wrote:

> A router is a piece of hardware that acts as a gateway.
>

Even if it's a Dell? ;-)

kontia wrote:
> plz tell me the diffrence between router and gateway
>
A router is like a traffic cop. a gateway connects two or more LAN s
together

James Knott wrote:

> CJT wrote:
>
>
>>A router is a piece of hardware that acts as a gateway.
>>
>
>
> Even if it's a Dell? ;-)
>
Why, have they re-defined one or the other term?

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Justice wrote:

> kontia wrote:
>
>> plz tell me the diffrence between router and gateway
>>
> A router is like a traffic cop. a gateway connects two or more LAN s
> together

That's too restrictive. Routers route, but don't act "like a traffic
cop" -- that's a firewall. Gateways connect two networks, but they
don't have to be LANs.

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CJT wrote:

>>>A router is a piece of hardware that acts as a gateway.
>>>

>> Even if it's a Dell? ;-)
>>
> Why, have they re-defined one or the other term?

Ever hear of Gateway computers? ;-)

James Knott wrote:

> CJT wrote:
>
>
>>>>A router is a piece of hardware that acts as a gateway.
>>>>
>
>
>>>Even if it's a Dell? ;-)
>>>
>>
>>Why, have they re-defined one or the other term?
>
>
> Ever hear of Gateway computers? ;-)
>
That went right over my head. :-)

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On Thu, 08 Sep 2005 07:58:20 -0700, kontia wrote:

> plz tell me the diffrence between router and gateway

A router is a piece of equipment that directs tcp-ip and other internet
packets between networks, that's all.

A gateway is generally the interface between a small network and a larger one (
i.e, the internet). It's a more general term. But a gateway must also be
a router.

Let's say that you have a small home network of three computers, and you
have an adsl modem/router to connect to the internet. This router is your
lan's gateway to the internet.

But the gateway does more than just route packets. It will also translate
the local ip addresses of your three computers to the single ip address
that the gateway presents to the internet. It will also likely be a
firewall, not only routing packets and translating packet addresses, but
also inspecting and blocking unwanted packets.

Dan

Dan N wrote:

> On Thu, 08 Sep 2005 07:58:20 -0700, kontia wrote:
>
>> plz tell me the diffrence between router and gateway
>
> A router is a piece of equipment that directs tcp-ip and other internet
> packets between networks, that's all.

Or IPX or even based on MAC addresses, if locally assigned MACs are used.

>
> A gateway is generally the interface between a small network and a larger
> one (
> i.e, the internet). It's a more general term. But a gateway must also be
> a router.

There are (were?) also mail gateways, that would convert between otherwise
incompatible mail systems. These aren't common now.

>
> Let's say that you have a small home network of three computers, and you
> have an adsl modem/router to connect to the internet. This router is your
> lan's gateway to the internet.
>
> But the gateway does more than just route packets. It will also translate
> the local ip addresses of your three computers to the single ip address
> that the gateway presents to the internet. It will also likely be a
> firewall, not only routing packets and translating packet addresses, but
> also inspecting and blocking unwanted packets.

Some people consider gateways to be at the application level, such as the
mail gateway mentioned above.