Further notes on operation
8.8 Possible security holes: Prevent unauthorized access
CP 343-1 ERPC
64 Manual, 03/2010, C79000-G8976-C239-02
Type of access Community name
*)
Read access public
Read and write access private
*) Note the use of lowercase letters!
MIB files for your SNMP tools
If you use an SNMP tool, you will find the MIB files relevant to the CP in the STEP 7
installation in the following folder:
<drive>\<installation directory>\Siemens\Step7\S7DATA\snmp\mib
For the Automation System MIB, for example, this means the following files:
● automationPS.mib
● automationSmi.mib
● automationSystem.mib
● automationTC.mib
If necessary, copy the required MIB files to your SNMP client.
8.8 Possible security holes: Prevent unauthorized access
Open interfaces and protocols
With various SIMATIC NET components, such as switches, a wide range of parameter
assignment and diagnostic functions (for example, Web servers, network management) are
available over open protocols and interfaces. The possibility of unauthorized misuse of these
open protocols and interfaces by third parties, for example to manipulate data, cannot be
entirely excluded.
When using the functions listed above and these open interfaces and protocols (for example,
SNMP, HTTP), you should take suitable security measures to prevent unauthorized access
to the components and the network particularly from within the WAN/Internet.
NOTICE
We expressly point out that automation networks must be isolated from the rest of the
company network by suitable gateways (for example using tried and tested firewall
systems). We do not accept any liability whatsoever, whatever the legal justification, for
damage resulting from non-adherence to this notice.
The applies in particular to the connection to the company network when using ERPC
functions.
If you have questions on the use of firewall systems and IT security, please contact your
local Siemens office or representative. You will find the address in the SIMATIC catalog IK PI
or on the Internet at
Link to contacts: (http://www.automation.siemens.com/net
) → Contacts & Partners →
Contacts.
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