|>>|| No. 27251
Not too long ago I managed to land myself a position as some sort of a systems administrator / network engineer at a small to medium local ISP in the middle of nowhere.
I'm moderately familiar with their network from the tech support days in the same company. I've dabbled with Linux and *BSD systems before, these don't scare me really.
I've also read Tanenbaum and Olifers' books about networks.
All of this helps immensely though at times I feel like I only barely manage to keep myself from drowning. I can coast along like this a few years, I think, yet I'd prefer not to.
Recommend me something hands-on, please. I've identified at least a few areas where I suck, these include: interoperability between Layer-2 and Layer-3 technologies, routing , gateways and firewalls. For the latter, whilst I have a rather clear idea how to firewall an endpoint, I struggle with firewalling transit nodes.
As an example, Network Warrior - I don't remember the author - was good.
 Whilst having a basic idea how it works and what protocols do what, I only vaguely understand how I'm supposed to debug routing issues. Also, BGP and iBGP stuff.