- Products
- Network Security
Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
Security ServicesComprehensive security for your network security solution
Network Security ManagerModern Security Management for today’s security landscape
- Advanced Threat Protection
Capture ATPMulti-engine advanced threat detection
Capture Security applianceAdvanced Threat Protection for modern threat landscape
- Access Security
Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
Secure Mobile AccessRemote, best-in-class, secure access
Wireless Access PointsEasy to manage, fast and secure Wi-FI
SwitchesHigh-speed network switching for business connectivity
- Email Security
Email SecurityProtect against today’s advanced email threats
- Cloud Security
Cloud App SecurityVisibility and security for Cloud Apps
Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
- Endpoint Security
Capture ClientStop advanced threats and rollback the damage caused by malware
Content Filtering ClientControl access to unwanted and unsecure web content
- Product Widgets
- Product Menu Right Image
- Network Security
- Solutions
- Solutions Widgets
- Solutions Image Widgets
- Solutions Widgets
- Partners
- Partner Widgets
- Partners Image Widgets
- Partner Widgets
- Support
- Support Widget
- Support Image Widgets
- Support Widget
- Products
- Network Security
- Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
- Security ServicesComprehensive security for your network security solution
- Network Security ManagerModern Security Management for today’s security landscape
- Advanced Threat Protection
- Capture ATPMulti-engine advanced threat detection
- Capture Security applianceAdvanced Threat Protection for modern threat landscape
- Access Security
- Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
- Secure Mobile AccessRemote, best-in-class, secure access
- Wireless Access PointsEasy to manage, fast and secure Wi-FI
- SwitchesHigh-speed network switching for business connectivity
- Email Security
- Email SecurityProtect against today’s advanced email threats
- Cloud Security
- Cloud App SecurityVisibility and security for Cloud Apps
- Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
- Endpoint Security
- Capture ClientStop advanced threats and rollback the damage caused by malware
- Content Filtering ClientControl access to unwanted and unsecure web content
- Product Widgets
- Product Menu Right Image
- Network Security
- Solutions
- Solutions Widgets
- Solutions Image Widgets
- Solutions Widgets
- Partners
- Partner Widgets
- Partners Image Widgets
- Partner Widgets
- Support
- Support Widget
- Support Image Widgets
- Support Widget
How to fix the error "SSH Protocol Version 1 Session Key Retrieval"
10/14/2021 
10 People found this article helpful
38,313 Views
Description
PCI scan of the SonicWall UTM appliance reports the following vulnerability: "SSH Protocol Version 1 Session Key Retrieval".
Resolution
Resolution for SonicOS 6.5
This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.
SonicWall UTM appliances uses SSH1 along with SSH2 and as of now we cannot disable SSH1 alone. But this vulnerability can be remedied using one of the following resolutions.
Resolution1: Disable SSH on the WAN interfaces.
Step 1: Click Manage in the top navigation menu. Go to Network | Interfaces. Click Configure icon on the WAN interface.
Step 2: Disable SSH management and click OK.
Resolution 2: Allow SSH management access only from specific trusted source IP Addresses.
Step1: Click Manage in the top navigation menu. Go to Objects | Address Objects and click Add under address objects.
Step2: Enter the name for the object and enter the IP address of the computer from where you are trying to take SSH session. Select the zone as WAN. 
Step3: Go to Rules | Access Rules and select WAN > WAN rule. You can see the SSH management rule.
Step4: Edit the rule and select "My IP address" from the drop down list.
Note: If you want to allow multiple IP addresses, you need to create address objects and group them together in a address group. Then select the address group in the source of access rule.
Resolution for SonicOS 6.2 and Below
The below resolution is for customers using SonicOS 6.2 and earlier firmware. For firewalls that are generation 6 and newer we suggest to upgrade to the latest general release of SonicOS 6.5 firmware.
SonicWall UTM appliances uses SSH1 along with SSH2 and as of now we cannot disable SSH1 alone. But this vulnerability can be remedied using one of the following resolutions.
Resolution1: Disable SSH on the WAN iinterfaces.
Step 1: Goto Network | Interface. Click Configure icon on the WAN interface.
Step 2: Disable SSH management and click OK.
Resolution 2: Allow SSH management access only from specific trusted source IP Addresses.
Step1: Go to Firewall | Address Object and click Add under address objects.
Step2: Enter the name for the object and enter the IP address of the computer from where you are trying to take SSH session. Select the zone as WAN.
Step3: Goto Firewall | Access Rule and select WAN > WAN rule. You can see the SSH management rule.
Step4: Edit the rule and select "My IP address" from the drop down list.
Note: If you want to allow multiple IP addresses, you need to create address objects and group them together in a address group. Then select the address group in the source of access rule.
Related Articles
- Troubleshooting Single Sign-on (SSO) related errors
- How to enable and configure NTP?
- Cannot edit App Control Signatures, "Error: property 'value' can't be empty value"
Categories
- Firewalls > TZ Series
- Firewalls > SonicWall NSA Series
- Firewalls > SonicWall SuperMassive 9000 Series
- Firewalls > SonicWall SuperMassive E10000 Series
YES
NO