Thanks. Honestly I'm not 100% sure I understand the difference between
Serial and CIDR.
I *think* Serial is the connection between my router(or firewall) and
the ISPs router and
CIDR is the publically addressable IP addresses. Is CIDR just the term
to say for example, a class C is split up into several smaller ranges?
Like 6 IPs instead of 255, or does it mean something else?

Thanks again for your help. I love learning new stuff.  :)




On Wed, Nov 3, 2010 at 11:18 AM, Raper, Jonathan - Eagle
<[email protected]> wrote:
> Jon,
>
> No problem. I would ask your ISP what they mean by "Serial" versus CIDR.
>
> How many IP Addresses did you request originally?
>
> The first one you list provides an address range of 182.40.6.12 - 134.40.6.15 
> with a subnet mask of 255.255.255.252 (hence the CIDR /30), with 2 useable IP 
> Addresses. I'm guessing 182.40.6.12 may be where you point your default route?
>
> The second one you list provides an address range of 134.120.4.0 - 
> 134.120.4.7, with a subnet mask of 255.255.255.248 (hence the CIDR /29), with 
> 6 useable IP Addresses.
>
> You said you're new to this - do you understand the concept of CIDR? (don't 
> feel bad if you don't - we're here to help!)
>
> Jonathan L. Raper, A+, MCSA, MCSE
> Technology Coordinator
> Eagle Physicians & Associates, PA
> [email protected]
> www.eaglemds.com
>
>
> -----Original Message-----
> From: Jon D [mailto:[email protected]]
> Sent: Wednesday, November 03, 2010 10:48 AM
> To: NT System Admin Issues
> Subject: Re: Connecting an ASA Firewall directly to internet ethernet dropoff 
> ?
>
> Good question. I'm new to this. Our ISP gave me something like this
>
> Serial 182.40.6.14/30
> CIDR 134.120.4.6/29
>
> The internet side of the ASA is connected to the 182.40.6.x range and
> it can ping out. So maybe I should just ignore the 134.120.4.x range?
>
>
>
>
>
>
> On Wed, Nov 3, 2010 at 10:18 AM, Raper, Jonathan - Eagle
> <[email protected]> wrote:
>> Our Internet connection comes straight into our ASA. I understand CIDR, but 
>> what do you mean by "serial IP"?
>>
>> Your default route in your ASA would point to your ISP's gateway address 
>> that they provide you.
>>
>> Jonathan L. Raper, A+, MCSA, MCSE
>> Technology Coordinator
>> Eagle Physicians & Associates, PA
>> [email protected]
>> www.eaglemds.com
>>
>>
>> -----Original Message-----
>> From: Jon D [mailto:[email protected]]
>> Sent: Wednesday, November 03, 2010 9:59 AM
>> To: NT System Admin Issues
>> Subject: Connecting an ASA Firewall directly to internet ethernet dropoff ?
>>
>> If you have an ethernet drop off to the internet, and a new Cisco ASA,
>> and no router, can you connect it to the internet?
>> I have a CIDR range, and a Serial range.
>>
>> Right now I have 1 interface with an inside natted address and 1
>> interface with a serial ip.
>> Should I have a 3rd interface configured with an ip from the CIDR range?
>>
>> I can currently, from the ASA, ping inside and outside, but I can't
>> hit anything to the CIDR range....
>>
>>
>>
>>
>> Thanks,
>> Jon
>>
>> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~
>> ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~
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