Router Access Error

[Batman-15]

I have setup a VPN on my intermal network. It uses the standard VPN ports:

1723 and 500. I been seeing access attempts to these ports on a daily basis, see below:

LAN access from remote] from 164.52.24.171:54722 to 100.17.27.56:1723, Sunday, Mar 07,2021 13:23:35

LAN access from remote] from 146.88.240.4:54686 to 100.17.27.56:500, Sunday, Mar 07,2021 02:32:40

There were lots more, but I abbreviated the log for brevity. I have two questions as Follows:

1. The first IP is from China and when I do an NSLOOKUP on it nothing is returned. Is this malicious activity

and

2. If so is there a way to block this from happening with my R6900P router?

Much gratitude for any and all responses!

[DarrenM]

The router does not have a feature like this you may have to look into a firewall solution.

DarrenM