IP address of RHEL might be changed after reboot every time.
So remote login and desktop sharing (exp: Remote Desktop Connection in Windows OS) can't be accessed.
Open terminal in RHEL.
Check IP address
hostname -I
Example: 192.168.0.110
Check Netmask
ip addr show
Find this line: inet [IP address] / [Netmask]
Example: inet 192.168.0.110/24
Check Gateway
ip route
Find this line: default via [Gateway]
Example: default via 192.168.0.254
Close terminal
Open Settings in RHEL Desktop
Open Network
Click gear icon under <Wired> section
Click IPv4
Input details
IPv4 Method Manual
Address [Step 1 Check IP details --> 2.]
Netmask [Step 1 Check IP details --> 3.]
Gateway [Step 1 Check IP details --> 4.]
DNS 8.8.8.8
Click Apply
Close Settings
Shut down the RHEL
Power on the RHEL by click Start without GUI.
Open Remote Desktop Connection (RDP) in Windows OS
In <General> tab --> Computer: , make sure the IP address same with Address in <Step 2 IPv4 Settings>