Sorry I don't have a better update than that! FortiClient FortiClient4 4 3 1 10%GW Unable to establish the VPN connection. I think these are failed connection attempts on port 443. FortiClient proactively defends against advanced attacks. - Check the restrict access setting to ensure the host connected from is allowed. 03-29-2022 we had the same issue today with Forticlient 7.0.2 and active Option to ignore invalid VPN server certificate. The idle-timeout is closing the SSLVPN if the connection is idle for more than 5 minutes (300 . This is a repost ofa post from an old blog, made on July 13, 2012, that used to be on: http://adminramble.com/common-forticlient-ssl-vpn-errors/. Broad. Below are the steps that could be performed, before opening up a ticket with technical support as that would speed up the troubleshooting process and help in finding out the root cause of the issue: All debugs/sniffers/traffic tests need to be run concurrently and need to have timestamps. From FortiClient machine ping test to internal unit through the tunnel like a server (timestamp). RDP (Remote Desktop Protocol), similar to VNC, enables you to remotely control a computer running Microsoft Terminal Services. Since the start of 2022 I've been seeing frequent FortiClient sslvpn connection problems for users, me included. The Forums are a place to find answers on a range of Fortinet products from peers and product experts. !time! To allow multiple interfaces to connect, use the following CLI commands. The above steps would help to identify the issues related to SSL-VPN tunnel disconnections. https://community.fortinet.com/t5/FortiGate/Technical-Tip-SSL-VPN-connection-logout-after-8-hours/ta -> If the issue is limited to a particular user or a few users, then ask the user or users to use another network (for example mobile hotspot) and see if the issue is reproduced. 2). Unique selling points of Fortinet/Fortigate ? In that case a simple reboot of the device solves the problem. Fortigate SSL VPN issues - Forticlient. - Fortinet Community FortiGate FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic. (Collect the file before and after the disconnection.). Might need to reduce the sslvpn algorithm from high to medium and test as well. -> Some logs/errors in the SSL-VPN logs could be seen with the Reason 'DH lib' and Action 'ssl-exit-error' after the user's connection disconnects and tries to connect again to the SSL-VPN. whether all users or some users are having the SSL-VPN disconnection issue. Sometimes in rare cases I have found the problem is caused by error on the FortiGate device, in this case no one is able to connect to the VPN neither using SSL VPN or IPsec but the internal networks can go to all local networks and the external internet connection. -> Check the configuration on FortiGate for any traffic shapers applied on the WAN interface, DoS policies, and local-in policies created. !data! We have a cert from a Public CA on the gate so I dont think thats the issue. Created on (-5), www script to login ssh with password com Portal Detailed Access Account Archives - bankep.com, How to provide SSH password inside a script or oneliner, Ubuntu Shows No Bootable Device After Installation In UEFI Mode - Ubuntu-Server.com, Ubuntu shows No Bootable Device after installation in UEFI mode, VirtualBox Returns Kernel Driver Not Installed On Ubuntu - Ubuntu-Server.com, VirtualBox returns Kernel driver not installed on Ubuntu, Clear Microsoft Teams company SSO login page on Ubuntu, How to convert from CentOS 8 to CentOS 8 Stream, Bluetooth headphones and YouTube videos stop working after upgrade to Fedora 35, Small WordPress backup script that sends email on failed backups and deletes old backups, Brave browser fails to open because of locked profile, PackageKit cant find file in /var/cache/PackageKit/. The ID (logid) is a 10-digit field. Destination IP address for the web. The problem can usually be solved by adjusting the host ornetworkfirewall rules on the client side. To troubleshoot getting no response from the SSL VPN URL: Go to VPN > SSL-VPN Settings . Port number of the traffic's destination. 4 Reply This is an expected behavior of FortiClient Window. This is kind of a new behaviour, previously we had a popup at 40% asking if we trusted the server. ssl-anomoly for Microsoft sites, 'untrusted'. DH lib and connection not established. Default value is 300 seconds (5 minutes). In ssl-new-con event, we also observed the reason of 'N/A' similar in customers logs. The VPN server may be unreachable. Sniffer2 on FortiGate in a SSH session: # diag sniffer packet 'host ' 6 0 l. 6). Best practice for compromised Fortigate 60F factory reset, Press J to jump to the feed. Before the actual login from user1 (Remote IP: 10.47.2.4), there were events of ssl-new-con and ssl-exit-error from user N/A. Created on On the FortiClient side, UserB sees Unable to establish the VPN connection. -> See if the end-user is connected using a Wired or Wireless connection on their network. To troubleshoot SSL VPN hanging or disconnecting at 98%: A new SSL VPN driver was added to FortiClient 5.6.0 and later to resolve SSL VPN connection issues. # ping -t a.a.a.a|cmd /q /v /c "(pause&pause)>nul & for /l %a in () do (set /p "data=" && echoecho(!date! The reason for this behavior is that we use Windows API to make those HTTPS calls for the login process. Once the connection drop occurs, then collect & attach the debug/sniffers, SSLVPN logs & System Event Logs from FortiGate, ask the client to note downtime if the issue occurs. Limit the count of failed login attepts until the user is banned User1 was considered as login successfully after these 2 events: user logged successfully and the tunnel was established with tunnel IP address: 10.212.134.200. Configuring the VPN overlay between the HQ FortiGate and AWS native VPN gateway Configuring the VIP to access the remote servers Configuring the SD-WAN to steer traffic between the overlays Under the vpn ssl settings the algorithm is set to high.Could you please let me know if you got it fixed and what was the solution?THX! (-5)so i decided to add another post describing some of the most common errors that may come up when connecting to FortiGate with SSL VPN. Go toC:\ProgramFiles\Fortinet\FortiClient\logs\traceand collect the file like 'sslvpndaemon_x.log'. Edited on So try to removetraffic logging on some of the rules or events. 04-08-2022 10). Press the Win + R keys enter inetcpl.cpl and click OK. diagnose debug application sslvpn -1 diagnose debug enable The CLI displays debug output similar to the following: After Forticlient VPN Update to 7.0.7.0345 it was fine with invalid VPN server certificate enabled again. Had the same issue with 6.4.5 and 6.4.7. I see from the stats that one of the posts with the most visits is the one about the FortiClient SSL VPN error the vpn server may be unreachable. you might be trying to connect to VPN from the wrong side of the interface (from one of your internal networks or from the network of one of the sites you already have a site to site connection. !data! Log Type Event Log SSL VPN session Port 1 generally being the outside internet facing interface. How to solve ssl vpn failure. The Internet Options of the Control Panel can be opened via Internet Explorer (IE), or by calling inetcpl.cpl directly. It just keeps the session open. !time! Create an account to follow your favorite communities and start taking part in conversations. Automatic backup of Ubiquiti ES-48-LITE over SSH, How to reset lost root password on SUSE Linux Enterprise Server, How to reset root password on Debian 8 (Jessie), blob data length is greater than 10% of the total redo log size, PackageKit can't find file in /var/cache/PackageKit/, How to check for, and clean Ebury SSH Rootkit. )&ping -n 2 x.x.x.x>nul". 05-20-2022 !data! Refer to the below document for more information: https://community.fortinet.com/t5/FortiGate/Technical-Tip-Enabling-the-preserve-session-route/ta-p/1 -> If a SSL-VPN tunnel connection is terminated with the log message 'Deleted to make way for another session', then apply the below commands: # config vpn ssl web portal edit set limit-user-logins disable nextend. This can cause the session to become 'dirty'. I think these are failed connection attempts on port 443. br Bernhard Still see the errors in my logs but it doesn't appear to be affecting users. Go to folder %appdata%\forticlient\logs\trace, get the file like 'sslvpndaemon_x.log'. and SSLVPN drops every 10-30 minutes if there are active clients in the LAN - at night or during weekends SSL-VPN works perfect. This site uses Akismet to reduce spam. In ssl-exit-error event, we also observed the reason of 'DH lib' similar in customers logs. 01:30 PM Press question mark to learn the rest of the keyboard shortcuts. Everything went great with the upgrade,but the client would bomb out at 40 percent with "VPN server maybe . If the server is not reachable, the windows API will take a long time to timeout (and there is no way to set the timeout for those calls), for the user, it looks very bad, so we first probe the server is OK, then start the login process. Copyright 2022 Fortinet, Inc. All Rights Reserved. Cookbook | FortiGate / FortiOS 6.2.9 | Fortinet Documentation Library 6.2.9 Download PDF SSL VPN troubleshooting The following topics provide information about SSL VPN troubleshooting: Debug commands Troubleshooting common scenarios Diagnose commands SSL VPN debug command Use the following diagnose commands to identify SSL VPN issues. -> Test with DTLS or TLS connections. Fortinet Community Knowledge Base A secure sockets layer VPN (SSL VPN) enables individual users to access an organization's network, client-server applications, and internal network . Learn how your comment data is processed. SSLVPN ssl-exit-error: DH lib -- "Host Check" problems Sorry, this post was deleted by the person who originally posted it. 8). To troubleshoot getting no response from the SSL VPN URL: - Go to VPN -> SSL-VPN Settings. With a trusted cert, the problem went away. I had been seeing what I thought was the issue at home but that turned out to be my own Internet. Sniff the ICMP packets on FortiGate for the internal machine's IP address that was started in step 8. Reddit and its partners use cookies and similar technologies to provide you with a better experience. You should also be on 629 minimum but better yet 646 or later. 12:53 AM, The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.. We have the same messages - allready with 4.3.3 and SSLVPN drops every 10-30 minutes if there are active clients in the LAN - at night or during weekends SSL-VPN works perfect. Adjust it as per the requirement or disable it while testing. Take a note of the "Web mode access will be listening at" URL as we will need this in the next section. br Bernhard. I have very strange issue. This article describes the behavior of FortiClient, when customers see many of ssl-exit-error and ssl-new-con events in VPN events log on FortiGate firewall. If your FortiOS version is compatible, upgrade to use one of these versions. Range: <0> to <259200>. A user will attempt five or six connections and get kicked back to initial login. Click to share on Facebook (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on Pocket (Opens in new window), Click to share on Skype (Opens in new window), Click to share on Telegram (Opens in new window), Click to share on WhatsApp (Opens in new window), Click to email a link to a friend (Opens in new window), Windows 2008 server hangs at Applying user settings, services not working, Add sidebar in WordPress Twenty Eleven single post pages, the vpn server may be unreachable. As the error states itself the most common problem is that either the username or the password isnt matching the one of the device. 7). -> Perform basic configuration checks on the FortiGate pertaining to SSL-VPN. 01:32 AM FortiClient is compatible with Fabric-Ready partners to further strengthen enterprises security posture. But what does this mean in detail, what produces this type of error message? According to Fortinet support, the settings are taken from the Internet options. On your FortiGate firewall VPN => SSL-VPN Settings. Our server cert is also from a Public CA. # config vpn ssl setting set idle-timeout 300. r/Fortinet has 35000 members and counting! Choosing a mode of operation and applying the proper levels of security depends on your specific environment and requirements. Create key and CSR for multi-domain certificate. cheers, Hi! As you can see in one of my earlier posts, the firewall rules on local machine, or on the network gateway ( I have rarely found this to be the problem with this error). there isnt acorrespondingfirewall policy rule that allows access for the user group to any of the internal networks. - Check the SSL VPN port assignment. You need to have the rule from the wan interface to one of the internal interfaces with action SSL-VPN and select the group of users which will have access, check if your user is in correct group. Default value is 28800 seconds (8 hours). The idle-timeout is the period of time in seconds that the SSL-VPN will wait before timing out. 3). Message ID 99841 FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic. The error does not necessarily indicate a problem with FortiGate if only 1 user or certain users are having issues. 12:36 AM, Created on # diag sniffer packet any 'host and icmp' 4 0 l, 12). Meaning An error occurred in the SSL connection. We do have a lot of older FCs (6.2.7) and I'm slowing getting them upgraded. It is a unique identifier for that specific log. In the Fortinet documentation it states: the user is not in the correct user group that has VPN access (either the local firewall group or the LDAP server group if youre using one). Its tight integration with the Security Fabric enables policy-based automation to contain threats and control outbreaks. Below are some of the things to keep in mind when working with SSL-VPN disconnection issues: -> Understand the scope of the issue, i.e. From FortiClient machine ping test to external IP like the Fortigate's Default Gateway (timestamp). I wanted to set up a SSL VPN. Sometimes in rare cases I have found the problem is caused by error on the FortiGate device, in this case no one is able to connect to the VPN neither using SSL VPN or IPsec but the internal networks can go to all local networks and the external internet connection. Copyright 2022 Fortinet, Inc. All Rights Reserved. Automated. Use a wired connection if possible in the user's network. Change the listening Port for the SSL-VPN portal Using another port is an easy but effective measurement if an attacker is only probing the default port of an application. - Check that the policy for SSL VPN traffic is configured correctly. Had. 9). 04-08-2022 Start a Wireshark packet capture on the client with the filter of the internal machine's IP address on the SSL-VPN interface. Moving to FortiGate, just got new hardware, what is Firewall policy to restrict usage of OpenVPN. Fortinet Community Knowledge Base FortiClient What is an SSL VPN? 11). I have installed openvps on centos 6, everything seems to be configured correctly, but I cant ping across the tunnel, any advice? In tunnel mode, the SSL VPN client encrypts all traffic from the remote client computer and sends it to the FortiGate through an SSL VPN tunnel over the HTTPS link between the user and the FortiGate. problems with the FortiGate device, in most of the time the device would be the problem and the problem would go away after the reboot of the FortiGate device, but would come again after the few days. A user will attempt five or six connections and get kicked back to initial login. My settings: Listen on any interface Listen on Port 10443 Usergroup TEST is mapped to fullaccess Split tunneling is disabled Web Access portal is function properly with 192.168.1.254:10443" but when i want to connect with FortiClient, i get the error # set idle-timeout 300. Sniffer1 on FortiGate in a SSH session: # diag sniffer packet 'host ' 4 0 l. 5). So, a good action plan is useful in determining whether the issue lies on FortiGate or not. The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.. Select the Advanced tab. HTTPS/SSH administrative access: how to lock by Country? -> Look into the crashlogs on the FortiGate. Hi, we are experiencing the same issue only on few PCs. Latency or poor network connectivity can cause the login timeout on the FortiGate. Device Key in Log Message: LogRhythm Schema: Data Type: Schema Description: logid <vmid> Number: The ID (logid) is a 10-digit field. I have many log entries in the event log stating ssl-exit-error. FortiOS version 4.0 Don't forget to change the port on all VPN clients too. Technical Tip : SSL-VPN disconnection issues when connected with FortiClient. If the SSLVPN connection is established, but the connection stops after some time, you should double-check the following two timeout values on the FortiGate configuration: # config vpn ssl settings. Provide a "diag debug app sslvpn -1" output. Copyright 2022 Fortinet, Inc. All Rights Reserved. The VPN server may be unreachable. (-14) In the logs I see: Tunnel-Up -> shows UserB group GrpB Tunnel-Down -> same, but shows tunnel connection setup timeout SSL-Exit-Error -> shows UserB group L1A, error: DH lib Any user setup as a member of GrpA + L1A = VPN works I'm planning to do that but I wondered if anyone else was noticing this behavior, especially after the start of 2022. - Go to Policy -> IPv4 Policy or Policy -> IPv6 policy. 02-21-2012 Range: <0> to <259200>. Severity Error Created on Each log entry contains a Level (level) field that indicates the estimated severity of the event that caused the log entry. A virtual private network (VPN) is a service that allows a user to establish a secure, encrypted connection between the public internet and a corporate or institutional network. 02-21-2012 It is a unique identifier for that specific log. i.e. The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges. Finally a connection is made, but the sslvpn logs show ssl-exit-error and the reason is DH lib. From FortiClient machine ping test to FortiGate external interface (timestamp). 3 Related Topics Fortinet Public company Business Business, Economics, and Finance 7 comments Best Add a Comment HappyVlane 2 yr. ago Pretty sure the free client doesn't do host checks since 6.2. # ping -t x.x.x.x|cmd /q /v /c "(pause&pause)>nul & for /l %a in () do (set /p "data=" && echo(!date! FortiGate SSL VPN supports SP-initiated SSO. The FC version is 6.4.6 and the VPN Gateway has 6.4.7 version. # ping -t z.z.z.z|cmd /q /v /c "(pause&pause)>nul & for /l %a in () do (set /p "data=" && echo(!date! I've worked with support and the suggestion was to reduce the vpn ssl setting algorithm from high to medium on the gate (6.4.8). Hi! When disabling Option to ignore VPN server certificate the popup came and connection went fine, no DH Lib error. Checking the SSL-VPN Monitor in the Forti shows the user as being connected but only with "Web Connections" instead of "Tunnel Connections" It almost like when authenticating Forticlient cant find the user in a User Group so assigned it to the Web-access portal Running Forticlient 7.0 and firmware 7.0.1 on the Forti The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.. Table of Contents. FortiClient FortiClient proactively defends against advanced attacks. The auth-timeout is the period of time in seconds that the SSL-VPN will wait before re-authentication is enforced. Edited on The problem was with the server cert that was not trusted (we were connecting using the server IP). ssl-exit-error on FortiGate for FortiClients with Reason as DH lib Since the start of 2022 I've been seeing frequent FortiClient sslvpn connection problems for users, me included. )&ping -n 2 a.a.a.a>nul". !time! Introduction Before you begin What's new Log Types and Subtypes Type Otherwise the connection will break. 01:17 PM. Below is an article on how to enable DTLS for SSL-VPN connections. 07:34 AM. We had set the algorithm to medium to no effect. These commands enable debugging of SSL VPN with a debug level of -1. FortiClient is compatible with Fabric-Ready partners to further strengthen enterprises' security posture. 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