I'm studying virtualization and networking, so my budget allowed me to acquire some old but gold Cisco 29xx series router and switch. I plan to upgrade this in a near future (a use GNS3 too, to anticipate some scenarios before getting fresher network hardware).
My Cisco hardware is one 2901 router and 2960-S switch, and using XCP-ng as virtualization platform. I can receive internet traffic when I ping and for this I configured NAT inside interface 0/1 and outside interface 0/0 (followed all the recipe for this, neat stuff at all).Now, the big thing will be configure the router to allow traffic in and out for my VM's (surely that will require some configurations in XCP-ng side and VM networking, but first getting router and switch on top of the priorities).
Also, my virtualization host is connected to the switch, so I can ping as well do anything related to outside internet connection. But, of course, I can't login via SSH into it as well ping it from my PC connected to my ISP. I know that this happens because I only allowed NAT in one interface to get packets from outside, but my subnet can not be seen, so my host is unreachable.
Last but not least, I'm "imagining" playing like I'm a small cloud hosting company, just for fun (and I know that to get there, I would need more sophisticated network architecture and design, like a Clos/Spine-Leaf 2-Tier stuff, but baby steps over here haha), so I want to be proficient in this Systems Engineering kind of thing.
