Pretty sure Cory,
PAT, is just NAT with overload essentially... I have a really cool
NAT/PAT issue that i've been working on. I'll draw it up and post it
later.
Lets just say that we want to PAT everyone to 1(legal) address,
then we wanted to static translate just one machine (illegal
addresss), to a legal address. When we made this static
translation... this would be considered NAT. also if we wanted to
translate 5 machines(illegal) to 5 (legal) address this would be
NAT. but if we wanted to translate 5 (illegal) addresses to 4 (legal)
address this would be PAT.
anyone not agree? please write me so i'm not wrong in the future :)
larry(fat)
On 24 May 00, at 8:26, Stull, Cory wrote:
> Larry,
>
> Are you sure about the static translations thing on the 761?? I looked
> up the 761 command glossary on CCO and it looked like all it would do is
> PAT... I'm just asking because I'm just now starting studies for BCRAN and
> configuring a 700 series router is part of that.
>
> thanks
> Cory
>
> -----Original Message-----
> From: Larry Averitt [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, May 23, 2000 2:43 PM
> To: Ajiemher; [EMAIL PROTECTED]
> Subject: Re: Cisco 761M connecting to ISP using public ip
>
>
> hello ajiemher,
> If you read the rules of this mailing list, one of the things NOT to do is
> start a message with "one of my customers"..
> but
> I would use the registered ip's and let him be. If you want to use
> pat, thats great, just use static translations for his exchange server.
> http://www.cisco.com/warp/customer/701/60.html good luck, larry
>
>
> On 24 May 00, at 0:39, Ajiemher wrote:
>
> > Hello,
> >
> > One customer of ours will be using cisco 761M router to connect to the
> > internet. They have a registered domain name and a set of public ip
> > address. They also plan of having their own mail server using Exchange
> > Server 5.5. My questions are as follows:
> >
> > 1. What is the best approach to this solution? Should i use PAT or just
> > use public address to all host in the private network? 2. If i use PAT,
> > how will i let my exchange server receive and send mail if its ip
> > address is a private one? Is there a way to
> > map private ip address to public ip addres under cisco 700 series
> > router?
> > 3. If i use public ip address to the hosts in the network including the
> > exchange server, how will I secure the network from outside
> > world? The SET IP FILTER command for cisco 700 series router in the
> > cisco web site is not clear enough for me.
> >
> > I have no problem with exchange server since i've have done such work of
> > connecting exchange server to the internet. This is my first work that
> > involves cisco router.
> >
> > I will appreciate any help from you guys....
> >
> > Thanks in advance...
> >
> > itsme,
> >
> > Ajie of Dubai
> > CCNA
> >
> >
>
>
> Larry Averitt, CCNA
> Design Validation
> www.imcnetworks.com
>
> ___________________________________
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Larry Averitt, CCNA
Design Validation
www.imcnetworks.com
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