(WR21) How do you disable PING replies on the WAN?

Question

Is there any way to easily disable ping replies on the WAN interface? We are running into an issue where a couple of our routers are being ddos'd and causing data overage.

I am hoping its just a simple checkbox somewhere, and I am just missing it.

Answer 1

Hi and welcome to Digi Forum!

In order to block ping or other unwanted traffic, you should use the firewall, see the User Guide section here:

https://www.digi.com/resources/documentation/digidocs/90001019/default.htm#references/r_firewall.htm%3FTocPath%3DConfiguring%2520security%2520%7CFirewall%2520%7C_____0

Also, I would suggest you to look at this guide as well: https://ftp1.digi.com/support/documentation/AN_018_TransPort_Security_Lockdown.pdf

I hope this helps, if you need any further assistance please send us an email to tech.support@digi.com.

You can find details on available Support options here: https://www.digi.com/support.

Thanks,

Anny
Digi Technical Support

Comments

I tried "block return-icmp unreach in break end on ppp 1"

However, it appears to have blocked all traffic, instead of just ICMP. The unit is now not accessible.

Is there a simple firewall command that blocks only ICMP ping requests from the PPP 1 interface?