Recent Content
Win a Tenable Connect t-shirt! Official Sweepstakes Details & Rules
Log in to Tenable Connect before July 1, 2025 for a chance to win a limited edition Tenable Connect t-shirt! Each individual who logs in to the new Tenable Connect platform during the entry period will receive 1 entry into the sweepstakes. First-time community users will need to successfully complete the registration process and log in to the platform. Winners will be notified in July via the email used to log in to Tenable Connect, and need to complete the order form in order to receive their t-shirt. Full details and official rules are found here: Tenable Community Platform Sweepstakes Official Rules No Purchase Necessary to Enter or Win Overview. Tenable, Inc. (“Tenable”) has created a Sweepstakes where participants will participate by logging into the new community platform (connect.tenable.com) at least one time between May 6, 2025 and July 1, 2025. Participants will need to fill-out a registration form and choose a username to complete their registration on the platform. Participant names will be tracked and drawn randomly to be selected to win a free Tenable Connect t-shirt. The Sweepstakes is sponsored by Tenable and begins on May 6, 2025, 5:00 pm EST. Entries must be submitted during the Sweepstakes Entry Period (as defined below) to Tenable in strict accordance with Tenable’s instructions and these Official Rules. Entrants are limited to a single entry during the Sweepstakes Period. Those who do not abide by these Official Rules or Tenable’s instructions or the prize fulfillment requirements may be disqualified at Tenable’s sole discretion. Tenable may keep all Entrant information after completion of the Sweepstakes for business management and record keeping purposes. Eligibility. The Sweepstakes is open only to all individuals who are 18 years of age or older; however, employees of Tenable and/or the immediate family (spouse, parents, siblings and children) and household members (whether related or not) of each such employee, and federal and state government employees are not eligible to win the prizes described herein. No purchase of Tenable’s products or services is necessary to participate in the Sweepstakes. All international, U.S., federal, state and local laws and regulations apply and this Sweepstakes is void where prohibited by law. Sponsor. The sponsor and administrator of this Sweepstakes is Tenable, Inc., with its place of business located at 6100 Merriweather Drive, Columbia, MD 21044, United States of America. In case of complaints or disputes, send an e-mail to legal@tenable.com with the subject line “Tenable Community Platform Sweepstakes.” Agreement to Official Rules. Participation in the Sweepstakes constitutes Entrant’s full and unconditional agreement to and acceptance of these Official Rules and the decisions of the Sponsor, which are final and binding. Winning a prize is contingent upon fulfilling all requirements set forth herein. Sweepstakes Entry Period. The Sweepstakes begins on May 6, 2025 at 12:00 pm EST and ends on July 1, 2025 at 11:59 pm EST (the “Sweepstakes Entry Period”). Entry. To enter the Sweepstakes, eligible entrants must complete a registration for and log into the new community platform (connect.tenable.com) at least one time during the Sweepstakes Entry Period. The Sweepstakes is limited to one entry per person, and multiple entries by a single Entrant may void eligibility. Winners. The winners will be selected randomly after the Sweepstakes Entry Period, with all winners selected by July 15, 2025. If a potential winner did not comply with the Official Rules of this Sweepstakes, their entry will be void and Tenable will select an alternate winner in his/her place. Prizes. There will be up to 100 winners receiving a Tenable t-shirt. Tenable will notify the potential winners via email to the email address that the Entrant provides during registration. In order to claim their prize, each winner will have to complete the order form within the email and provide their shirt size, contact information and a verified shipping address. The email and prize form will be through a third-party tool, Sendoso. Winners must respond and complete the form in its entirety by September 1, 2025 11:59 pm EST to claim their prize. If legitimately claimed, the prize will be awarded. All taxes, social security payments or other fees (including those applicable in your jurisdiction of primary residence) and other expenses not specified in these Official Rules as being provided as part of the prize are the sole responsibility of the winners. Winners must provide a valid address in order to receive the prize. Tenable will not replace and is not responsible for any lost, damaged, mutilated or stolen prize or any prize that is undeliverable or does not reach a winner because of an incorrect or changed address or other contact information. No transfers, prize substitutions or cash redemptions will be made. Tenable reserves the right to substitute the stated prize or portion thereof with another prize or portion thereof of equal or greater value (such as a gift card) for any reason, including, without limitation, prize unavailability. General Conditions. All federal, state and local laws apply. As a condition of entry, and by participating in and entering the Sweepstakes, you agree to be bound by these Official Rules and the decisions of Tenable, which shall be final and binding in all respects, and to release, discharge and hold harmless Tenable, its parents, subsidiaries, affiliates, agencies, agents and representatives from any and all claims, charges, injuries, liability, losses and/or damages of any kind caused by, resulting from or arising out of your participation in the Sweepstakes and/or your acceptance, use, misuse, loss or misdirection of a prize. Failure to comply with these Official Rules may result in disqualification from this Sweepstakes. Tenable may use a third party tool, Sendoso, to facilitate collection of Entrant’s information and selection of winners. The Sweepstakes is in no way sponsored, endorsed, or in association with Sendoso or its affiliates. Each Entrant completely releases and absolves Sendoso or its affiliate from any association or liability of this Sweepstakes. Tenable’s failure to or decision not to enforce any provision in these Official Rules will not constitute a waiver of that or any other provision. In the event there is an alleged or actual ambiguity, discrepancy or inconsistency between disclosures or other statements contained in any Sweepstakes-related materials and/or these Official Rules (including any alleged discrepancy or inconsistency in these Official Rules), it will be resolved in Tenable’s sole discretion. The invalidity or unenforceability of any provision of these Official Rules will not affect the validity or enforceability of any other provision. In the event that any provision is determined to be invalid or otherwise unenforceable or illegal, these Official Rules will otherwise remain in effect and will be construed in accordance with their terms as if the invalid or illegal provision were not contained herein. If the Sweepstakes is not capable of running as planned for any reason, Tenable reserves the right, in its sole discretion, to cancel, modify or suspend the Sweepstakes and award the prizes based on entries received prior to cancellation, modification, or suspension or as otherwise deemed fair and appropriate by Tenable. Privacy. Each Entrant agrees to the use of personal information submitted when they enter as detailed in Tenable’s Privacy Policy posted at: http://www.tenable.com/privacy-policy. Tenable collects personal information in order to conduct the Sweepstakes. The Entrants’ personal data may be used for the following purposes: (a) to contact potential winners; (b) in compliance with applicable laws, to send Entrants marketing communications, including via e-mail, about Tenable products and services. You should direct any request to access, update or correct information to Tenable by emailing your request to privacy@tenable.com. By participating in the Sweepstakes and accepting these Official Rules, you acknowledge and consent to the use of your data as set out above. Disclaimer, Limitation of Liability and Disputes. NOTHING IN THESE OFFICIAL RULES LIMITS, EXCLUDES OR MODIFIES OR PURPORTS TO LIMIT, EXCLUDE OR MODIFY ANY STATUTORY CONSUMER GUARANTEES OR ANY IMPLIED CONDITION OR WARRANTY, THE EXCLUSION OF WHICH FROM THESE TERMS AND CONDITIONS WOULD CONTRAVENE ANY STATUTE OR CAUSE ANY PART OF THESE OFFICIAL RULES TO BE VOID ("NON-EXCLUDABLE GUARANTEES"). SUBJECT TO THE LIMITATIONS IN THE PRECEDING SENTENCE, TENABLE EXCLUDES FROM THESE OFFICIAL RULES ALL CONDITIONS, WARRANTIES AND TERMS IMPLIED BY STATUTE, GENERAL LAW OR CUSTOM EXCEPT FOR LIABILITY IN RELATION TO A NON-EXCLUDABLE GUARANTEE. YOU AGREE THAT THE PRIZE IS PROVIDED AS-IS WITHOUT ANY WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, IN FACT OR IN LAW, WHETHER NOW KNOWN OR HEREINAFTER ENACTED, RELATIVE TO THE USE OR ENJOYMENT OF THE PRIZE, BEYOND ANY NON-EXCLUDABLE GUARANTEES. IN NO EVENT SHALL THE SPONSOR BE LIABLE FOR ATTORNEY’S FEES. EXCEPT WHERE PROHIBITED, AS A CONDITION OF PARTICIPATING IN THIS SWEEPSTAKES, YOU AGREE THAT ANY AND ALL DISPUTES THAT CANNOT BE RESOLVED BETWEEN THE PARTICIPANT AND TENABLE, CLAIMS AND CAUSES OF ACTION ARISING OUT OF OR CONNECTED WITH THIS SWEEPSTAKES, OR THE PRIZE AWARDED, OR THE DETERMINATION OF THE WINNER MUST BE RESOLVED INDIVIDUALLY, WITHOUT RESORT TO ANY FORM OF CLASS ACTION. FURTHER, IN ANY SUCH DISPUTE, UNDER NO CIRCUMSTANCES WILL YOU BE PERMITTED OR ENTITLED TO OBTAIN AWARDS FOR PUNITIVE, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, OR ANY OTHER DAMAGES, INCLUDING ATTORNEYS' FEES, OTHER THAN PARTICIPANT'S ACTUAL OUT-OF-POCKET EXPENSES (IF ANY), NOT TO EXCEED ONE-HUNDRED DOLLARS (USD $100.00). Governing Law. This Sweepstakes and any dispute arising under or related thereto (whether for breach of contract, tortious conduct or otherwise) will be governed by the internal laws of the State of Maryland, without giving effect to its conflicts of law or choice of law principles. Any legal actions, suits or proceedings related to this Sweepstakes (whether for breach of contract, tortious conduct or otherwise) will be brought exclusively in the state or federal courts located in the State of Maryland, and each participant accepts and submits to the personal jurisdiction of those courts with respect to any legal actions, suits or proceedings arising out of or related to this Sweepstakes.22likes0CommentsTenable is a CompTIA Pre-Approved Training Provider
As of December 9, 2024, Tenable has officially been approved as a CompTIA Pre-approved IT industry training course provider. This means our customers who earn any one of our Tenable Product certifications can now apply up to 29 CEUs toward their CompTIA Security+ CE renewal. The certifications that qualify are: Tenable Vulnerability Management Specialist Tenable Vulnerability Management Expert Tenable Security Center Specialist Tenable Security Center Expert Tenable OT Security Specialist Customers can visit https://www.certmetrics.com/comptiato apply and upload the required documentation to their CompTIA account.3likes0CommentsWebinar: Customer Product Update Webinars - May 2025
Each month, Tenable hosts Customer Update webinars on different products and topics. Check out the May Customer Update Webinars below and save your spot! Recordings will be posted after the live webinar has concluded. Vulnerability Management: Tune in for product updates and how-to guidance for getting more value from Tenable Vulnerability Management. May 7, 2025 • 1:00PM EDT / 10:00AM PDT. Register here. Tenable One: Learn how you can improve the effectiveness and impact of your exposure management programs with Tenable One. May 8, 2025 • 11:00AM EDT / 8:00AM PDT. Register here. Security Center: Learn how to improve vulnerability management efficiency and effectiveness with Tenable Security Center. May 8, 2025 • 1:00PM EDT / 10:00AM PDT. Register here. OT Security: Join us for a deep dive into Tenable OT Security 4.2. May 7, 2025 • 11:00AM EDT / 8:00AM PDT. Register here. Nessus: Learn how you can improve vulnerability management efficiency and effectiveness with Nessus. May 6, 2025 • 1:00PM EDT / 10:00AM PDT. Register here.3likes0CommentsWelcome to the Community!
Welcome to Tenable Connect — your go-to destination to discover, learn, and engage on all things Tenable. Whether you're just getting started or are a seasoned user, Tenable Connect is designed to help you maximize the value of your Tenable investment. For additional guidance check out our Getting Started with Tenable Connect demo. Why Join Tenable Connect? Tenable Connect is more than just a support portal — it’s a collaborative hub where customers can: Access a wealth of documentation, guides, and training resources Ask questions and share expertise through our Q&A forums Open support cases for technical and non-technical issues Stay current with Tenable news, product updates, and events Learn best practices and tips from Tenable experts and your peers Request product enhancements and contribute to shaping future development The more you engage, the more valuable the community becomes for everyone. Note: Tenable Connect is exclusively available to Tenable customers. Getting Started: Registering for Tenable Connect To get access, follow these steps or watch the Register for Tenable Connect demo: Select Register at the top right of the page Include your Customer ID (found in your purchase order email). Enter your Company Name exactly as it appears on your PO. Your email address domain must match the approved domain on the account. Important: If you do not know your Customer ID, please do not complete the form. Submitting incorrect information may cause delays in linking your account. Once registered, you’ll receive an email to create your password. After resetting, use the same credentials to log into the community at connect.tenable.com Logging into Tenable Connect If you have already registered for Tenable Connect or formerly registered for Tenable Community, simply use the credentials that you previously used. If you are unsure of your password, select ‘Create or Reset Your Password’ on the login form. For more information, check out the Logging into Tenable Connect demo. Navigating the Community Tenable Connect is organized to put the most critical tools and resources at your fingertips. If you want to manage your licenses or contacts on the account, please go to the ‘Account Management’ section on the navigation bar. Support Open a Technical Support or Customer Care case under the Support tab. For Technical Support, you’ll need the correct account permissions. If you receive an error, contact your company’s Primary Contact. If you're the Primary Contact and still cannot access, email: customercare@tenable.com. For non-technical issues, you can submit a request without logging in. Check out the Technical Support Guide for full details on best practices and expectations. Learn Explore tutorials, onboarding guides, best practices, and in-depth documentation for all Tenable products — all in one place. News You Need Stay informed with the latest Tenable announcements, release updates, and security insights. Subscribe to forums or the full hub to get notified. Engage Join the conversation in product forums, participate in gamification activities, and explore our Customer Ambassador Program. Your contributions help shape the future of the community. Here’s a demo for getting started with engaging within Tenable Connect. Product Pages Each Tenable product has its own dedicated landing page with: Getting started resources Feature walkthroughs Support documentation Optimization tips Account Management The Account Management page will show your license entitlements, activation codes, license keys to download, manage contact access, and other critical account-related items. Your contact permissions on the account will determine the level of access and visibility you have on the Account Management page. Primary Contacts can manage all contacts and licenses and have full visibility and control over what others on the account can see. For an overview of the Account Management page, check out this overview. In addition, you may provision your products within this page. For guidance on provisioning products, please view this demo. Knowledge: Search Like a Pro Looking for something specific? Use the search bar at the top of any page to quickly find: Knowledge Base articles Documentation Q&A threads Training videos Blog posts Ready to Dive In? We’re excited to have you join the Tenable Connect community. Get involved, stay curious, and connect with peers and experts who are just as passionate about exposure management and innovation as you are. Please reach out if you have any questions or need help getting started.3likes0CommentsWebinar: Customer Product Update Webinars - July 2025
Check out the latest monthly Customer Update Webinars below and save your spot! Recordings will be posted after the live webinar has concluded. Tenable WAS, July 8, 2025, 11 am ET: Join us for a deep dive into recently released WAS features and capabilities. Tenable Nessus, July 8, 2025, 1 pm ET: Testing for specific CVEs with Nessus. Tenable OT Security, July 9, 2025, 11 am ET: Learn how Tenable OT Security 4.3 unlocks unprecedented visibility and control across your OT/IT environment. Tenable Vulnerability Management, July 9, 2025, 1 pm ET: Credentialed scans versus uncredentialed scans and how to use managed credentials. Tenable One, July 10, 2025, 11 am ET: Learn how Tenable One can now ingest important security context from non-Tenable security tools to help better identify, prioritize and reduce cyber risk. Tenable Security Center, July 10, 2025, 1 pm ET: OS breakdown: reporting exposures by operating system.Customer Care Guide
To effectively work with Tenable Customer Care, here's a breakdown of the process and key information: Identify Your Need: Technical Issues: If you're experiencing problems with Tenable products (scanning errors, installation issues, product not working as expected), you'll need Technical Support. Non-Technical Issues: For help with order fulfillment, managing account contacts, Tenable Connect login errors, and permissions, contact Customer Care. Account Onboarding and Renewals: Larger accounts and accounts with complex products will be assigned a Customer Success Manager, who can assist further with onboarding, renewals, product adoption, professional services, training, sales questions, or strategic best practices. If your account has a Customer Success Manager, their contact information is displayed on the Account Management landing page. Log in to Tenable Connect: The primary way to interact with Tenable support is through the Tenable Connect portal: https://connect.tenable.com You'll likely need to log in or register for an account if you haven't already. You will already have an account if: You are named on the Order Fulfillment email You have logged in to Tenable Community or Tenable Connect before Opening a Customer Care Case (for Non-Technical Issues): Visit the Customer Care page on the Tenable Connect: https://connect.tenable.com Fill out the form with your name, email, subject, and a detailed description of your request. You can submit a non-technical Customer Care request without logging in to Tenable Connect. You can also submit a non-technical Customer Care request by emailing customercare@tenable.com. Provide identifying information for you, your account, and your product. Your email address Your account’s Customer ID number Product activation code, UUID, or the order number from your Order Fulfillment email. Provide a detailed description of the issue, including: The behavior you expect. The behavior you are experiencing. Any error messages. Steps you've already taken. Specify the product you are having trouble with. Customer Care will email your reply by the end of the next business day. The Customer Care team is not currently phone-enabled. Best Practices for Working with Tenable Support: Be clear and concise when describing your issue. Provide as much detail as possible, including steps to reproduce the problem, error messages, and the impact on your work. Include relevant logs and diagnostic information if applicable. Respond promptly to any requests for further information from the support team. Keep track of your case number for easy reference. If you have a critical technical issue (P1), call your regional Technical Support phone number for the fastest response. By following these steps, you can effectively engage with Tenable Customer Care and Tenable Technical Support to get the assistance you need. Remember to use Tenable Connect as your primary point of contact for most issues.1like0CommentsTenable Core Account Expiry
APPLIES TO Tenable Core OPERATING SYSTEM(S) TenableCore DESCRIPTION Tenable Core, a lightly customized version of Oracle Linux 8, is hardened in accordance with security best practices including some elements of the CIS Level 1 benchmarks. One benchmark in particular has the potential to lock users out and expire their account: Default Security Configuration Standards 5.4.1.4 Ensure inactive password lock is 30 days or less This requirement means that user accounts will be automatically disabled after a period of 30 days of inactivity following password expiration. In order to prevent this, Tenable Core users should log into the cockpit (8000) or SSH at least once every 365 days and update their account password to prevent it from expiring, which in turn prevents the account from becoming locked out. INFORMATION Please log into Tenable Connect to view the following additional resources and access more support. If your account has already expired due to the above requirement, the following knowledge base article will help to resolve it: Unable to Sign Into Tenable Core "Authentication failed: internal-error" For a physical hardware hosted Tenable Core instance, this may require a keyboard and monitor hooked up or serial access. If needed, steps 10-15 of the following article can be used to attach to the serial console for direct interaction: Installing a new platform via USB for Tenable OT Security Hardware Appliances For Tenable OT Security environments, please see Leveraging the Remote Unlock Feature in Tenable Core for instructions on how to remotely unlock administrative accounts on Tenable Core machines.1like0CommentsWhich Tenable sites should I allow?
INFORMATION There are times when traffic needs to be allowed for specific sites. If this is the case, use the following list of sites to allow traffic the correct traffic through for Tenable products. Notes: Tenable Support is unable to provide a list of IPs as these servers are dynamic. Allowing these URLs is the recommended practice. SSL inspection on traffic to and from the Tenable update sites is not supported. While access to the update sites can be established, it may not be able to complete updates due to SSL inspection of the traffic. DETAILS Tenable products https://plugins.nessus.org https://downloads.nessus.org https://plugins-customers.nessus.org https://plugins-us.nessus.org https://plugins.cloud.tenable.com https://appliance.cloud.tenable.com https://tenablesecurity.com https://cloud.tenable.com https://sensor.cloud.tenable.com https://sensor.cloud.tenablecloud.cn If NIAP support is needed: ocsp.digicert.com ocsp.google.com o.pki.goog For retrieving Tenable Docker images for restricted environments or automated updates, please see the allow list published by Docker. Tenable Vulnerability Management By default, Tenable.io is configured with region-specific Cloud Scanners. The Tenable Vulnerability Management User Guide lists cloud scanners and regions for guidance on what to allow. Their IP address ranges can be found in the Cloud Sensors section of the Tenable Vulnerability Management User Guide. This documentation also lists other sites and IPs that will need to be allowed in order for linked Nessus Scanners and Nessus Agents to communicate with Tenable Vulnerability Management. Further detail about incoming and outgoing ports required for Tenable products linked to Tenable Vulnerability management can be found in the Tip section of the Port Requirements documentation. With Tenable Vulnerability Management utilizing hCaptcha, provide access to https://hcaptcha.com/ Plugins Many Log4Shell plugins require that the following wildcard domains be allowed in order to perform remote checks successfully: *.w.nessus.org *.r.nessus.org1like0CommentsHow Does Tenable Vulnerability Management Identify an Asset as Unique
INFORMATION Identification is the process of matching a set of attributes collected by a sensor (e.g. Nessus) to an existing asset. If Tenable Vulnerability Management is unable to find an existing asset that matches the incoming host, it is treated as a new asset and added to Tenable Vulnerability Management. The following section explains how Tenable Vulnerability Management matches hosts to assets. DETAILS Each identification request is based on a list of key-value pairs representing properties that have been observed/collected. Tenable Vulnerability Management uses a subset of these properties, called Identification Attributes (IA), in an attempt to determine whether an asset has been previously seen. Our current list of IAs is: AWS EC2 Instance ID Azure VM ID GCP Instance ID BigFix Asset ID Tenable UUID BIOS UUID Network UUID MAC Address NetBIOS Name Fully Qualified Domain Name (FQDN) IPv4 address These are ordered on a spectrum, from authoritative to speculative, based on their ability to accurately link a host to an existing asset. Internal IDs generated by cloud computing platforms (Amazon Elastic Cloud Compute, Microsoft Azure, Google Compute Engine, etc.) are 100% authoritative and unique. If the Tenable Vulnerability Management asset tracking system matches assets using one of these identifiers, the decision is guaranteed to be correct. Every asset should have at most one value for an identifier in this class. Properties below Network UUID are considered to be "scoped" to the network, meaning that for an asset to be considered as unique with the same MAC Address, NetBIOS Name, FQDN or IPv4 the asset will need to belong to the same Tenable Vulnerability Management defined Network as well. For more information, refer to the Tenable Vulnerability Management documentation on Networks.1like0CommentsUsing OpenSSL to verify certificate information on a port
DESCRIPTION OpenSSL's s_client command can be used to analyze client-server communication, including whether a port is open and if that port is capable of accepting an SSL/TLS connection. It is a useful tool for investigating SSL/TLS certificate-based plugins, and for confirming that a line of secure communications is available. NOTE: OpenSSL is not a Tenable product. It is a free-to-use communications library with an open source SSL/TLS toolkit made for Unix-like operating systems. It has since been ported over to Windows as well. STEPS Verify open ports using OpenSSL: OpenSSL can be used to verify if a port is listening, accepting connections, and if an SSL certificate is present. OpenSSL can be used for validation in the event plugin 51192 'SSL Certificate cannot be trusted' unexpectedly finds unknown certificates on a port: # openssl s_client -connect <URL or IP>:<port> If the host must negotiate a proxy to reach the target server, add a proxy parameter to the command, like so: # openssl s_client -proxy <proxyserver>:<port> -connect <URL or IP>:<port> An example of this command in use: # openssl s_client -connect targethost.corp.com:3269 CONNECTED(00000003) depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert High Assurance EV Root CA verify return:1 depth=1 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert SHA2 High Assurance Server CA verify return:1 depth=0 C = US, ST = Maryland, L = Columbia, O = Tenable Inc., CN = cloud.tenable.com verify return:1 --- <Certificate chain here> --- <Server certificate data begins here> --- Determine if SSLv2 or SSLv3 certificates are in use using OpenSSL: Nessus includes various plugins that detect and identify vulnerabilities based on the SSL and TLS protocols supported by the target. For example, plugin 20007 'SSL Version 2 and 3 Protocol Detection' enumerates the host's supported SSLv2 and SSLv3 protocols, and which ports it is discovered on. OpenSSL can be used to validate this information. Verify the presence of SSLv2 certificates, run the following: # openssl s_client -connect <URL or IP>:<port> -ssl2 Verify the presence of SSLv3 certificates, run the following: # openssl s_client -connect <URL or IP>:<port> -ssl3 In either instance, if the respective SSL versions are not found, the output will yield an error. Verify an open path to the Tenable servers for registration and updates using OpenSSL: Another common use of OpenSSL in regards to Tenable applications is the verification of an open path to the Tenable update servers. Standard installations of Tenable.sc (formerly known as SecurityCenter) and Nessus Professional scanners require a secure connection to the Tenable update servers for both the initial activation process and OTA core upgrades, as well as daily plugin feed updates. This communication occurs using HTTPS (over port 443). To check that the path is open and no firewall blockages exist between the endpoint and the update servers, run the following from the SC or Nessus host: # openssl s_client -connect cloud.tenable.com:443 Similar to the output in the first example, expect to see 'CONNECTED(00000003)' followed by certificate information if the required path is open. ADDITIONAL RESOURCES More information about this can be found by checking the OpenSSL man pages, or on the OpenSSL website.1like0Comments
About Tenable Connect Support
Support guides and resources to help you get the most out of the Tenable Connect community.35 Articles