topic Re: ICMP Timestamps in General Topics

ICMP Timestamps

tezza — Fri, 18 Jul 2014 04:06:55 GMT

Hi,

Can anyone please tell me if there is a way to stop my PA from responding to ICMP type 13 and 14 timestamp requests/replies?

Cheers

Re: ICMP Timestamps

emr_1 — Fri, 18 Jul 2014 05:09:35 GMT

Hello

You can create custom signature based on icmp type.

Please refer to the following KB

Security Policy to Allow/Deny a Certain ICMP Type

Regards,

Re: ICMP Timestamps

hshah — Fri, 18 Jul 2014 16:07:53 GMT

Excellent

Re: ICMP Timestamps

tezza — Wed, 23 Jul 2014 01:02:48 GMT

That's perfect for a policy level but what about at Management Profile level for the interfaces.

Re: ICMP Timestamps

emr_1 — Wed, 23 Jul 2014 01:11:50 GMT

I believe there is no way to configure disabling ICMP type 13 and 14.

How about configuring security policy which applies to 'from Trust to Trust' if you want to block it on Trust I/F?

I'm not sure it works or not, just guessing.

Re: ICMP Timestamps

HULK — Wed, 23 Jul 2014 01:21:32 GMT

Hello Tezza,

I hope, management profile will only allow Echo request (ICMP type 😎 and reply (ICMP type 0), if you enable ping on it. Also, as emr suggested, you may create a profile for intra zone traffic.

Thanks

Re: ICMP Timestamps

Royalfr — Fri, 03 Jan 2020 18:09:04 GMT

Did you ever find a solution for this?

it is five years later and the interfaces are still answering these oddball ICMP requests (which can be useful to hackers).

We have PING on the interface profile and it is answering these all day long.

Royal

Re: ICMP Timestamps

MP18 — Fri, 03 Jan 2020 18:33:27 GMT

Please see below article as per this you can block ICMP type 13 and 14.

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClFZCA0

Re: ICMP Timestamps

Royalfr — Fri, 03 Jan 2020 19:24:20 GMT

Trying block them passing through the firewall is easy enough.

I'm trying to stop the firewall from answering them.

Will a policy affect traffic that is directed at the Interface IP of the firewall? Normally that is affected only by Management Profile. I don't write policy rules to allow the firewall to receive & send SSH, SNMP, syslogs, pings, etc.