connecting github.com timed out

Question

I'm behind a router and trying to clone ODOO on Ubuntu using the code $ git clone https://github.com/odoo/odoo.git

But it is not working showing time out for port 443

According to this post The solution is to add these lines

Host github.com
 Hostname ssh.github.com
 Port 443

to this file /.ssh/config

But in my case, this directory > .ssh and file > config does not exist and if I used sudo nano ~/.ssh/config
The system refuses to save the file even while I'm using the root user, it says: Error writing /root/.ssh/config: No such file or directory

Also It seems the same problem while I'm trying to install sudo npm install -g rtlcss

The result is: npm ERR! network timeout at: https://registry.npmjs.org/rtlcss

Any help please? Everything was fine in the exact situation while I was directly connected to the internet, but now I'm under a router and using Hyper-V to run this Ubuntu.

Answer 1

I found that the problem was network problem. When I changed the Gateway it worked fine while I configured the router to allow 443