topic Re: Parent Application Subtypes automatically allowed? in General Topics

Parent Application Subtypes automatically allowed?

rjdahav163 — Thu, 04 Aug 2016 14:08:31 GMT

Hi All,

In a security policy, if I allow Application "ipsec" with service as "application-default" then will the firewall also allow

- ipsec-esp

- ipsec-esp-udp

- ipsec-ah

- ike ?

If you see applipedia, and if you search "ipsec" then you see the above mentioned 4 applications as sub-types of the application "ipsec". Hence the question.

Same is also the case with "snmp".

Thanks and Regards,

Re: Parent Application Subtypes automatically allowed?

TranceforLife — Thu, 04 Aug 2016 14:43:36 GMT

You do have application dependency. For your example, if you do want to allow let's say snmpv2 you must also allow snmp-base app in order for this to work. snmp application includes all snmp versions.

Re: Parent Application Subtypes automatically allowed?

rjdahav163 — Thu, 04 Aug 2016 14:59:53 GMT

My Question is other way around.

I want to know if I allow, "snmp" under Application in my security policy, will the firewall also automatically allow "snmpv1" , "snmpv2", "snmpv3" and "snmp-base".

Similarly, if I allow "ipsec" under Application in my security policy, will the firewall also automatically allow "ipsec-ah", "ipsec-esp", "ipsec-esp-udp" and "ike" ?

Re: Parent Application Subtypes automatically allowed?

TranceforLife — Thu, 04 Aug 2016 15:05:40 GMT

yes it will

Re: Parent Application Subtypes automatically allowed?

BPry — Thu, 04 Aug 2016 18:34:58 GMT

If you look under the 'Applications' tab under 'Objects' (I think this is where you were pulling the screenshots, unless you looked them up under applipedia) then you'll notice that in the case of snmp you have four sub-applications underneath. By allowing snmp by default you also allow all of those child applications.

The same can be said about ipsec, where you will also allow ike, ipsec-ah,ipsec-esp, and ipsec-esp-udp. That being said if you solely allow ipsec-esp that will not allow anything else to actually pass because that process by itself does not call on any dependancies

Re: Parent Application Subtypes automatically allowed?

rjdahav163 — Fri, 05 Aug 2016 04:48:03 GMT

Thanks ! Exactly what I was looking for.