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Unread 2017-07-11, 04:46 PM   #8
Zetex
 
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Originally Posted by bwiencek View Post
I'd have to agree with what BuddyLee posted - I've had many discussions with techs that had a string of certifications who had little practical expierence that left me feeling like I was just banging my head against a wall... I had one entire team of very highly compensated "book experts" tell me it was imposible to have the same subnets on two sides of a wan circuit and let them 'talk' to each other... it's like they didn't understand basic NATting and argued that it could never work....

There are plenty of good online resources for networking, heck there are a TON of youtube videos that cover a lot of what you'll need to know to get started and a lot of more advanced topics. Also if you look around for the CBT Nuggets training videos they are a well laid out series that take you from the basics to semi-advanced topics...

I would start there, grab some used equipment off craigslist/ebay, use a router simulator / emulator and setup some virtual networks (GNS3, Dynamips, Cisco's, etc.), and do some basic config work and playing around, then start pounding the pavement and look at mid size to large companies where you can get in on the ground floor and gain some experience - even if it's desktop tech stuff / basic computer support that you get some exposure to the networking side and then get your certs and once you have them go out looking for a network job (or an internal promotion) - if you can get in the "IT" field even somewhat related no matter how basic it will give you a huge leg up over someone with no related experience and just certs.

I think I've still got an ASA 5505 if you think you want to play with a firewall that I'd sell cheap.
so I did a little search on the ASA 5505, interesting. how cheap are we talking?
My friend that i'm studying with thinks sims are good enough but I think hands on is better and may be able to talk him into splitting cost.

I've heard good things about GNS3 cisco's from what I read ( packet tracer) is really buggy.

the book I got came with a lite version of the simulator, I was planning on buying the full for more virtual labs, specifically with troubleshooting and configuration.

as for the talking on two opposite sides.. i'm pretty sure it was covered that you can you can use the same subnets, if I remember correctly, wendall covered that in chapter 3 or 4.

if i'm remembering part 1 of the book correctly the ISP is simply there as a Point of Presence. unless the wan is a leased line then it's point to point protocol.

if I'm remembering correctly. ( skimmed through: chapter 4 it says a WAN can be layer 2 or layer 3, and that subnets seperated by a router need to be different, which is why your book smart guys are saying "no not possible", you then mentioned utilizing NAT to circumvent this rule, but the parts i skimmed on NAT mention it changes source I.P. not destination I.P, which present a bit of a problem when trying to visualize how your setup works.

i mean circumventing the router seperation rule using NAT is bloody brilliant, i'm just not sure how your doing it. unless you can configure the local NAT router to forward destination IP's not at your site to a NAT I.P. at the remote site and then have someone at the remote site configure their NAT router to forward your NAT i.P. to company subnet.)


haven't gotten into a lot of depth yet on NAT or VLAN or even IPv4 Addressing and subnet masking. he's basically mentioned the very basics of NAT and that is about it. and i'm only on chapter 8 of 100-105, so pretty much basics, plus basic security config for SSH using local username and secret including basic VTY and console config. along with re-writing running config to startup.

Last edited by Zetex; 2017-07-11 at 08:58 PM..
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