Re: NET-SNMP Firewall Ports

I believe the 2 way rule should be ok




On Tue, Oct 27, 2009 at 1:35 PM, Kevin Evans
<[email protected]>wrote:

>  Hi,
>
>
>
> I require clarification on the ports required to be opened for NET-SNMP to
> work.
>
>
>
> I know that UDP 161 is required, but I have been unable to confirm if this
> needs to be opened as a 2 way rule as shown below:
>
>
>
> *Source                         Destination                  Port*
>
> Monitoring Server           Monitored Server            UDP 161
>
> Monitored Server            Monitoring Server           UDP 161
>
>
>
>
>
> Or a 1 way rule as shown below:
>
> * *
>
> *Source                         Destination                  Port*
>
> Monitoring Server           Monitored Server            UDP 161
>
>
>
> I have checked the FAQ and archived messages and have been unable to find
> this information. I managed to find the following info (Link<http://www.net-snmp.org/wiki/index.php/FAQ:General_18>),
> but it doesn’t quite clarify the question for me:
>
>
>
> What ports does SNMP use?
>
> There are three main network ports (and one named socket), which are
> typically used by SNMP. These are:
>
>     UDP port 161       - SNMP requests (GET* and SET)
>
>     UDP port 162       - SNMP notifications  (Traps/Informs)
>
>     TCP port 705       - AgentX
>
>     /var/agentx/master - AgentX
>
>
>
> We don’t use SNMP Traps and I am not aware of what AgentX is, we use
> Solarwinds as our monitoring server and NET-SNMP as the SNMPv3 agent for all
> servers within our DMZ.
>
>
>
> Regards
>
>
>
> Kevin Evans
>
> *Systems Administrator*
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