Enable SNMP for all hosts on outside interface of ASA

[bdf0506]

I am running an ASA in my lab, outside iface is 192.168.100.50, inside iface is 192.168.70.1.

I would like to enable snmp polling on the outside interface, and would like any other device in my network to be able poll the ASA for SNMP.

It appears that I need to manually whitelist each individual IP that I want to query SNMP, so if I do something like this it will work for the single IP listed:

snmp-server host outside 192.168.40.203 community public 

But what if i want to allow any host from 192.168.40.0/24 to query SNMP? Is there a way to do this? Or do I need to manually specify each host in my running configuration?

As a side note, 192.168.40.0/24 is a range that sits outside the ASA.

[Ben Walters]

In order to specify a network or range of addresses you need to create an object first for that, something like this should work:

object network <NAME>
subnet 192.168.40.0 255.255.255.0
snmp-server host-group outside <NAME> poll community public version 2c

[bdf0506]

I figured it was something similar to what you described, but no dice on my ASA 5505. It does not support host-group

ASA(config)# snmp-server ?

configure mode commands/options:
  community    Configure the community string
  contact      Text for mib object sysContact
  enable       Enable/Disable snmp-server or particular traps
  group        Define User Security Model Group
  host         Specify hosts to receive SNMP traps and send SNMP polls
  listen-port  Configure the SNMP engine's listening port
  location     Text for mib object sysLocation
  user         Define a user who can access the SNMP engine

Maybe it's because I am running an older version of IOS?

ASA# show version 

Cisco Adaptive Security Appliance Software Version 9.1(2) 
Device Manager Version 7.1(3)

Without doing an IOS upgrade, is there any other way to accomplish the ask?

[Ben Walters]

You are correct it is the versioning, it seems 9.1.5 adds the host-group commands. I found that in a feature enhancement document so clearly others like yourself had wanted to use groups/networks/ranges. 

Unfortunately at the current code it is impossible without adding individual hosts.