topic Re: ICMP Error in Network Security

ICMP Error

tahirs001 — Mon, 11 Mar 2019 17:37:43 GMT

Hello,

Recently I have been getting the following error message;

Denied ICMP type=8, code=0 from 10.3.70.113 on interface inside

Any Idea's how to resolve this?

Thanks

Tahir

Jennifer Halim — Tue, 27 Apr 2010 10:16:39 GMT

I assume that you are trying to ping the inside interface of the ASA firewall?

If that is the case, you need to configure the following:

icmp permit any inside

OR/ if you need to be more specific you can configure the following:

icmp permit 10.3.70.113 255.255.255.255 inside

tahirs001 — Tue, 27 Apr 2010 10:24:12 GMT

Hi Halijenn,

This is happening automatically, ICMP has been disabled. This error is generating quite frequently from various IP's

Tahir

Jennifer Halim — Tue, 27 Apr 2010 10:26:28 GMT

The error is generated because as you advised icmp is disabled, hence you are getting the error on "deny" icmp echo.

tahirs001 — Tue, 27 Apr 2010 10:31:03 GMT

This has just started to happen, ICMP has been disabled when we upgraded.

Will an access-list have triggered this off?

Tahir

Jennifer Halim — Tue, 27 Apr 2010 10:34:12 GMT

The error is triggered because you disable icmp, if you enable icmp, you will not see that error.

The error says "deny" the icmp packet, because you have disabled icmp after upgrade as you said.

tahirs001 — Tue, 27 Apr 2010 10:35:32 GMT

Ok thanks