This question is an exact duplicate of:
Is there a guide to setup a RPiB3 with Raspbian Stretch as a eth0 to wlan0 NAT-router?
I have tried eth0 with a fixed IPAddress and DHCP host for attached equipment. Using dnsmasq or isc-dhcp
$ sudo vi /etc/sysctl.conf net.ipv4.ip_forward = 1 $ sudo iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -o wlan0 -j MASQUERADE
Wlan0 as fix IPAddress or obtaining an IP Address from the local network router.
Using a laptop on eth0 to test the setup, the best I can do is “see” local network servers, like an APC UPS web interface. This set up will not allow access through the local router to the internet. However, the RPi shows as connected to the local router.
I am not sure if avahi, the local router, or just a bad setup is the problem. A guide would be really helpful.