I know you probably have already done this but is the firewall set up to allow internet sharing?? Also have you set up the internet connection to be shareable? Another silly little thing to check is the default gateway on the second machine.
Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
This poetic animation about monsters is illustrated in a Van Gogh painterly style
How to get WWDC 2017 tickets
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.