Since I've had a laptop (A), I've been trying to connect it with my Desktop PC (B) via router in a LAN, problem is (B) won't even answer any request aside from a ping. I've tried ssh, ftp, vnc, samba, vpn and in each case, (A) won't be able to reach (B) but (B) is able to reach (A)'s severs just fine. I've also tested this with an android device (C) and again (B)=>(C) but (C)=/=>(B).
A note on samba, I don't know if it's supposed to be a stable protocol but it's kind of the exception, it doesn't always connect (B) to (A) either. Another thing is sometimes samba via nautilus sees there is a (B) machine but is always unable to mount it...
I've tried a test of another post on the subject: booting (B) via a Live CD. There everything works, from ftp to ssh and samba or vnc. So I followed another of his advices and tried to figure out if I (B) has a firewall. So far nothing seems to indicate it since by default there's none, I don't remember installing any and I checked my installed software for one.
My questions would be: 1. how can I be sure I don't have a firewall or any other type block, I can give you other details like iptables --list output (no idea what that is though). 2. If you don't think it's that, what in hell could it be, I used to fault the ethernet of my MB but now I know it's the drivers at most. Looks to be software now and that gives me hope again.
I'll be checking this post to give you anything you need to answer. Thanks for your help.