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3 Detailed checklist 
 

Checklist 
Article ID: 109745536,    V2.0,    05/2022 

 

 

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3.8 

HTTPS certificates and SSH keys 

Menu path 

You can find this information in the following paths: 

 

With MSPS: "System > Load & Save" 

 

With X-200 and X-300: "System > Save & Load" 

Recommendation 

By default, the devices generate and use a self-signed certificate/key pair for 
HTTPS and SSH. 

A consequence of this are warning messages in the browser when you open the 
WBM over HTTPS. 

You can load your own certificates into the devices via HTTPSCert, 
SSHPrivateKeyECDSA, SSHPrivateKeyRSA as an alternative. If the container is 
password-protected, enter the passwords under "Passwords" before loading. 

In combination with a certificate authority (CA), it is possible to check in the 
browser whether it is connecting with the correct device or the correct IP address. 
For this to be possible, the public key of the CA must be distributed among all 
participating browsers/operating systems of the clients. 

The CA and certificates are generated in TIA Portal, SINEC NMS or other software 
tools. 

  

 

Summary of Contents for SCALANCE

Page 1: ...Checklist for setting up SCALANCE devices SCALANCE https support industry siemens com cs ww en view 109745536 Siemens Industry Online Support ...

Page 2: ...s arising from a breach of material contractual obligations shall however be limited to the foreseeable damage typical of the type of agreement unless liability arises from intent or gross negligence or is based on loss of life bodily injury or damage to health The foregoing provisions do not imply any change in the burden of proof to your detriment You shall indemnify Siemens against existing or ...

Page 3: ...DCP Discovery 15 3 10 Quality of service traffic shaping 16 3 11 Redundancy 17 3 11 1 Ring redundancy 17 3 11 2 Spanning tree 19 3 11 3 Passive listening 20 3 12 Wireless LAN 21 3 12 1 WLAN encryption 21 3 12 2 WLAN layer 2 tunnel 21 3 12 3 WLAN iPCF 22 3 13 Configuration 22 3 13 1 Storage information with MSPS devices 22 3 13 2 Configuration backup 23 3 13 3 C PLUG Key PLUG 24 3 13 4 Scheduled re...

Page 4: ...able of contents Checklist Article ID 109745536 V2 0 05 2022 4 Siemens AG 2022 All rights reserved 4 1 Service and support 31 4 2 Industry Mall 32 4 3 Links and literature 32 4 4 Change documentation 32 ...

Page 5: ...nused protocols Only allow write protected access Change the default password Set up encryption Motivation The checklist in this overview document will support you when preparing SCALANCE devices It guides you through the various functions of SCALANCE devices and gives you some general recommendations for parameter assignment This checklist will help you prepare SCALANCE devices for operation with...

Page 6: ... command line interface CLI There are essentially two variants of the configuration software platform for SCALANCE devices The functions and the configuration of these functions are typically identical or very similar With these variations in mind the SCALANCE devices are classified as follows X 200 and X 300 X 400 Devices based on Modular Switching Platform SCALANCE MSPS The following devices are...

Page 7: ... client Disable PROFINET interface if not using PROFINET Enable time synchronization With SCALANCE X disable preset ring ports Disable spanning tree if it is not needed Disable the option SINEMA Configuration Interface If PROFINET data traffic is running over the device and no custom VLAN configuration is being used then enable VLAN 0 aware mode X 300 or 802 1D Transparent Bridge Enable WLAN encry...

Page 8: ...evices Information Versions With X 200 and X 300 Agent System Version Numbers Recommendation Use the Latest firmware version If the SCALANCE device does not have the latest firmware perform an update The current versions can be found in Siemens Industry Online Support see 1 in chapter 4 3 3 2 Set up time synchronization Menu path You can find this information in the following paths With MSPS Syste...

Page 9: ...SNMPv3 variant Tick the SNMPv1 v2 Read Only checkbox to prevent changes to the device configuration via unsecure SNMP Set requests Change the Community Strings for SNMPv1 v2c Note With SNMPv1 v2 data are transmitted over the wire in cleartext With SNMPv3 the client can neither write nor read without a valid logon Data are transmitted in encrypted form Recommendations for MSPS devices Use SSH Serve...

Page 10: ...able the SINEMA Configuration Interface option if the device is not managed with TIA or SINEC NMS This turns off the configuration interface for these tools After commissioning set the DCP server to Read Only 3 4 Use secure FTP Menu path You can find this information System Load Save for MSPS devices Note on X 200 and X 300 devices The switches only support TFTP Recommendations for MSPS devices Do...

Page 11: ...unt if it is not used Note With the X 200 and X 300 you are neither able to rename or delete the admin and user accounts Note on MSPS devices The user account cannot change the configuration If the password is not changed the settings are visible to all With MSPS devices you will be automatically prompted on the first logon to change the admin password Optionally you can also change the name of th...

Page 12: ...r 3 9 This setting does not depend on the PROFINET status Remarks A restart is required for the changes to become effective Without a restart an improperly configured PROFINET controller could push parts of the configuration even without valid login credentials The port and ring settings are also part of the PROFINET configuration Note on PROFINET update time and watchdog time Check which update t...

Page 13: ...owser when you open the WBM over HTTPS You can load your own certificates into the devices via HTTPSCert SSHPrivateKeyECDSA SSHPrivateKeyRSA as an alternative If the container is password protected enter the passwords under Passwords before loading In combination with a certificate authority CA it is possible to check in the browser whether it is connecting with the correct device or the correct I...

Page 14: ... PROFINET name to be modified and a reset can also be triggered This can happen even if the login credentials are not known Read only access means the device no longer responds to DCP Set Requests With this setting it is not possible to assign parameters using engineering tools not even if the device remains visible Note If you run the SCALANCE device as a PROFINET device and enable DCP read acces...

Page 15: ...n networks that interface with multiple parties DCP disabled restricted forwarding of DCP telegrams This constellation can result in addresses or names of third parties being assumed to be unassigned even when they are already in use Duplicate addresses may occur and cause network problems 3 9 3 DCP Discovery Menu path You can find this information in MSPS devices under System DCP Discovery Note D...

Page 16: ... untagged setting causes the VLAN tag to be lost once the first switch has forwarded it The COS priority information is thereby removed as well COS and PROFINET If the PROFINET data traffic passes the VLAN capable device and advanced VLAN isolation is not necessary then use the settings below These settings will cause the VLAN tag to be retained With an X 300 enable VLAN 0 Aware mode in the Switch...

Page 17: ...guaranteed maximum times are 200 ms for MRP and 300 ms for HRP The higher level application must be able to handle these brief interruptions during the switchover For devices that communicate via the ring the response watchdog time in PROFINET must be larger than the failover time To achieve a higher response watchdog time increase the update time or the number of retries If the application does n...

Page 18: ...s connected the device becomes an HRP client If an MRP manager is connected the device becomes an MRP client If no ring manager is connected the device becomes an MRP manager ARD will never cause the device to become an HRP manager Menu path You can find this information in the following paths With MSPS Layer 2 Ring Redundancy With X 200 and X 300 X200 X300 Ring Redundancy Recommendation If the de...

Page 19: ...ar which is currently active Therefore all devices must be contacted in order to find the current manager and ascertain the state Note You can find application examples on redundancy in Siemens Industry Online Support see 4 in chapter 4 3 3 11 2 Spanning tree Menu path You can find this information in the following paths With MSPS Layer 2 Spanning Tree With X 300 Switch Configuration and Switch ST...

Page 20: ... Passive Listening is disabled by default on most SCALANCE X devices If there is no constellation in the network that relies on a coupling from STP to an HRP ring or MRP ring for example then disable Passive Listening Note Passive Listening causes the SCALANCE device to forward BPDUs An incoming topology change causes it to delete its MAC address table The SCALANCE device deletes the MAC address t...

Page 21: ... secure protocols over the wireless link as well 3 12 2 WLAN layer 2 tunnel Menu path You can find this information in IWLAN devices in the following menu Interfaces WLAN Client Recommendation Set the MAC mode to Layer 2 Tunnel if the client and the access point are SCALANCE W devices Note As of firmware V6 0 Layer 2 Tunnel is the default setting once you enable the iPCF function Note The Layer 2 ...

Page 22: ...y in parallel Immediately after modification in volatile RAM With a 60 second delay after the modification permanently in the flash storage and C PLUG where applicable The goal is to minimize write access to the flash while the user is making changes After each change in the WBM the following message will appear in the upper half of the screen Changes will be saved automatically in xy seconds Pres...

Page 23: ... devices there is a distinction between Config and ConfigPack Both contain the settings from the WBM The ConfigPack also receives information about the users passwords and certificates The Config represents the pure settings from the WBM Use the ConfigPack for a full backup of the device Password protect the Config and the ConfigPack if necessary You have the option of saving the configuration on ...

Page 24: ...ways saved automatically both internally and on the C PLUG Versions PLUG variants in currently in circulation are Item number Description Use 6GK1900 0AB00 C PLUG 32MB X200 X300 MSPS 6GK1900 0AB10 C PLUG 256MB MSPS The 32MB C PLUG currently functions in all SCALANCE devices The 256MB version is recommended for current MSPS devices The reason for this is the option for saving the firmware on the PL...

Page 25: ...lash Changes are only stored in volatile RAM As long as you do not use Write Startup Config to save the configuration before the specified time runs out the device will restart and discard all changes that were made after Trial Mode was activated Recommendation Use Trial Mode if you wish to test a configuration Trial Mode does apply new settings but it does not save them to the configuration file ...

Page 26: ... Negotiation Note If you use a fixed speed or mode setting instead of Auto Negotiation apply the fixed setting on both devices If you mix Auto Negotiation and fixed settings the Auto Negotiation participant will revert to half duplex Half duplex results in worse network performance compared to full duplex 3 14 2 System information Menu path You can find this information in the following paths With...

Page 27: ...cation with the Syslog server 3 14 4 Limit key functions Menu path You can find this information in the following paths With MSPS System Configuration of SELECT SET Button With X 200 and X 300 System Select Set Button Recommendation In this menu you can disable the Reset function of the physical reset key on the module housing If available you can also disable the switchover of the ring functions ...

Page 28: ...t first and switch off the specific port before the higher level switch disconnects the entire cell 3 14 7 Port mirroring Menu path You can find this information in the following paths With MSPS Layer 2 Mirroring With X 300 Switch Port Mirroring Recommendation If using port mirroring with VLAN capable switches make sure that the monitoring port is not a member in any VLAN no U M or T in the VLAN t...

Page 29: ...the faster failover time 3 14 9 Default gateway Menu path You can find this information in the following paths With MSPS Layer 3 Static Routes With X 200 and X 300 Agent Recommendation Even if the devices currently do not need a default gateway future expansions may necessitate one for example if more subnets are added or if you set up remote maintenance Always set a default gateway in the devices...

Page 30: ...wall General Note With SCALANCE S M devices you can completely disable the firewall in the settings Disabling the firewall has a side effect that is easy to miss As one may expect all communication between the interfaces is no longer subjected to filtering In addition all rules that limit access to the module services become inactive This means that all settings made under Predefined become void A...

Page 31: ...ts Please send queries to Technical Support via Web form support industry siemens com cs my src SITRAIN Digital Industry Academy We support you with our globally available training courses for industry with practical experience innovative learning methods and a concept that s tailored to the customer s specific needs For more information on our offered trainings and courses as well as their locati...

Page 32: ...ry siemens com 4 3 Links and literature Table 4 1 No Topic 1 Siemens Industry Online Support https support industry siemens com 2 Link to this entry page of this application example https support industry siemens com cs ww en view 109745536 3 Library for SNTP Server Functionality in SIMATIC S7 CPUs https support industry siemens com cs ww en view 82203451 4 Application examples on redundancy Appli...

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