Fortigate multiple phase 2 selectors See the dst-addr-type, dst-name, src-addr-type and src-name keywords for the vpn ipsec phase2 command in the FortiGate CLI Reference. 0 on the FortiGate side, could lead into multiple phase2 if the remote side uses more specific phase2 selectors. When configuration method (mode-cfg) is enabled in IPsec phase 1 configuration, enabling mode-cfg-allow-client-selector allows custom phase 2 selectors to be configured. Using 0. Apr 17, 2025 · how to confirm a Phase 2 Selectors mismatch configuration when there is no access to the peer device. Use the following command to add phase 2 selectors. Phase 2 is no security: the latter is defined and achieved with your firewall policy ruleset. 0). Some VPNs have multiple "Phase 2", and the IPsec tunnel only goes down when all of them are down. 12. The keys are Is the peer FW also a FortiGate? If not, I would suggest to make the p2-selectors be subnet to subnet rather than address group to address group. Solution To add a new subnet in the phase2 selector of a custom tunnel, there are 2 approaches: If the phase 2 selector is specified as a name Sep 18, 2023 · In Phase 2 selectors, instead of having one remote network, I used a named adress which consists of two different networks x. In addition, make sure IK Feb 19, 2022 · This article addresses the issue of not being able to reach out to peer IPs when connecting to a non-FortiGate unit with multiple subnets configured. Oct 4, 2025 · Learn how to configure Phase 2 of Fortigate VPNs with detailed steps on setting encryption, authentication, and IPsec security association parameters. ScopeFortiGate. The negotiation happens per phase 2 traffic selector. 30. 2 and above. Solution In this example, subnets of two selectors are to be combined into one super net. Normally, phase 2 would just be 0. 0/24 <-> 192. Adding more Phase 2 selector subnets to the same Phase 2 selector, using an address object group, by adding address objects to the same address object group used in Phase 2 in either loca Nov 10, 2004 · Article DescriptionThis article describes how to configure VPN for multiple subnets. Jul 23, 2023 · Phase 2 configuration with multiple subnets. Phase 2 configuration VPN security policies Blocking unwanted IKE negotiations and ESP packets with a local-in policy Configurable IKE port IPsec VPN IP address assignments Site-to-site VPN FortiGate-to-FortiGate Basic site-to-site VPN with pre-shared key Site-to-site VPN with digital certificate Site-to-site VPN with overlapping subnets GRE Oct 16, 2019 · the changes in ipsec monitor page in 5. See the FortiGate-7000 for FortiOS 5. Solution Apr 23, 2024 · Hello, I am trying to setup a IPSec VPN tunnel between a Fortigate VM and a Cisco ASAv in GNS3. 0/24). IPsec tunnel’s weird phase 2 selectors issue (story) Hello r/fortinet! Today I’ll be sharing a little story about an issue I faced while creating an IPsec tunnel (policy-based) which eventually was solved by the TAC. Hi, I am thinking about why you want to specify local/remote subnets in the Phase 2 selector in the IPSec setup. There are some configurations that Phase 2 configuration After phase 1 negotiations end successfully, phase 2 begins. DHCP–IPsec Select this option if the FortiGate unit assigns VIP addresses to FortiClient dialup clients through a DHCP server or relay. When defining Phase 2 parameters, you can choose any set of Phase 1 parameters to set up a secure connection and authenticate the remote peer. Oct 16, 2016 · Phase 2 advanced configuration settings In Phase 2, the FortiGate unit and the VPN peer or client exchange keys again to establish a secure communication channel between them. I understand in some case it requires to use 0. The keys are generated Phase 2 configuration After phase 1 negotiations end successfully, phase 2 begins. Currently VPN phase2 status in line view has been removed from VPN IPsec monitor. 0 on both sides all you need to do is allow the traffic via your policies and add a route on FortiGate B for the new subnet. However, I noticed that this table only shows the status of the "Phase 2" selectors and not the tunnel config vpn ipsec phase2-interface Parameter Description Type Size Default add-route how to add a subnet on the local or remote side or both. This command is only available in NAT mode. 0/0 each time a VPN came up. Scope FortiGate v7. However, peer ID functionality is limited with IKE version 2 because the peer ID is not included in the initial IKE message. Solution FortiOS uses an add-route to announce the network has been encrypted by a spoke or dialup client to the HUB and eventually adds this rou how to configure an IPsec VPN on a FortiGate firewall using an IPv6 address as the gateway, while enabling both IPv4 and IPv6 selectors for phase 2. ScopeFortiGate, Cisco, or any other vendor, an IP true1. New Phase2 Name: Enter the name of the first subnet pair, it should have a local subnet and the remote and it is important that both sides match when you set the phase2 on the branch side. But, in the last step of the configuration I didn't find the option "Selectors of Phase 2". how to combine two Phase Two selectors in an IPSEC VPN into one Phase Two selector using a super net. 0. 14 upgrades FortiGate-7000 platforms to support ForitOS 5. In the quick mode selector in Phase 2 configuration i chose one source subnet (Fortigate side) and destination subnet (ASA side). I found the following Technical Tip where they say that I need to create multiple phase 2 selectors for each local subnet from the Fortigate. 0/24 In such a scenario you'd have two phase 2 negotiations . As a result, FortiGate as IPsec dialup server is unable to accurately match the correct phase 1 configuration among multiple dialup IPsec tunnel configurations. Aug 15, 2017 · Since Phase 2 selectors are set to all zeroes, and add-route is enabled by default for a dynamic peer, the hub firewall was adding a static route for 0. Jan 29, 2025 · Technical Tip: How to bring up specific phase 2 selectors or all selectors of IPSec VPN from GUI FortiGate IPsec 8509 0 Jul 23, 2025 · This article explains the function and behavior of the IKEv2 IPsec phase2 setting ‘initiator-ts-narrow’ this feature can be used where only one phase2 selector is configured on a FortiGate with multiple source/remote subnets in an address group, and the remote peer has multiple individual phase2 sel Phase 2 selectors and ADVPN shortcut tunnels Phase 2 selectors can be used to inject IKE routes on the ADVPN shortcut tunnel. But is there a way to only need one phase 2 selector for every local subnet? You can add a route to a peer destination selector by using the add-route option, which is available for all dynamic IPsec phases 1 and 2, for both policy-based and route-based IPsec VPNs. 6 and above firmware versions. 100 are in the Fortinet community encryption domain. x. Solved! Go to Solution. Both sites run on FG 7. 3 SNMP table to monitor FortiGate's VPNs. x/28 and y. The default settings are as broad as possible: any IP address, using any protocol, on any port. 15. ScopeFortiGate v7. I have multiple subnets behind the Fortigate and one subnet behind the ASA. 0/0 for remote and destination between 2 FortiGate's that I manage. Add the multiple subnets one by one. Phase 2 configuration After phase 1 negotiations end successfully, phase 2 begins. In my configuration traffic from the ASA (172. 14. ScopeFortiGate. 168. The keys are Don't even think about using policy-based IPsec. Ps. Assuming you have your phase 2 selectors as 0. ietf. The phase 2 proposal parameters select the encryption and authentication algorithms needed to generate keys for protecting the implementation details of security associations (SAs). May the Fortigate and the other device have talkt to another and the Fortigate has get a matching ISAKMP but not put together because of Routing or Firewall policy problems, DNS Match, Password or Phase 2 configuration After phase 1 negotiations end successfully, phase 2 begins. Is there any limitation or any incorrect configuration happened? Solved! Go to Solution. ), then multiple Phase 2 selectors must be created on the FortiGate, and not multiple subnets within a single Phase 2 selector. 4. 13 or v7. 0/24) and Remote Address (10. The keys are Use phase2-interface to add or edit a phase 2 configuration on a route-based (interface mode) IPsec tunnel. This article explains how to add an IPSec phase 2 selector when FortiGate is giving error: '-56 empty values are not allowed'. 10. 100 and 10. 0 or should it be external addresses? Thank you. phase1) rather than the individual phase2s. Maybe you have to fallback to ikev1 2. No need to add any routes on the Fortigate as the route is directly connected. Is there any misconfiguration in my setting or this is the limit of the device (Fortigate 100D)? This is the 10 Phase 2 Selectors in VPN setting This is the status of the 10 Phase 2 Selectors. This enables configurations in which multiple subnets at each end of the tunnel can communicate, limited only by the firewall policies at each end. This setup works as intended after I add a static route on the HQ device for the /16 subnet of Branch A pointing to the Dialup tunnel. You select the encryption and authentication algorithms needed to generate keys for protecting the implementation details of Security Associations (SAs). config vpn ipsec phase2-interface Parameter Description Type Size Default add-route Configuring DrayTek router as a VPN Server. This command is available only in NAT/Route mode. Nov 23, 2024 · why one of the Phase 2 selectors is not present in the IPSec monitor. This option exists only in the CLI. However for some reason, the network of one of them keeps getting the phase 2 status "down" and the connection is lost. 0/24 10. 0/0 on both sides. Solution Identification. Tunnel 10 is presenting 2 Phase-2 Se Since someone has already responded about using the wildcard phase 2 selector, to specifically respond for you are asking for, you need to create another phase 2 in the cli (phase2-interface) that references the same phase 1 name (phase1-interface). Jun 27, 2019 · When phase 2 has auto-negotiate enabled, and phase 1 has meshselector-type set to subnet, a new dynamic selector will be installed for each combination of source and destination subnets. We originally had… Nov 6, 2023 · Created on 11-06-2023 03:08 PM Is this a Fortigate to Fortigate IPsec VPN tunnel? If it is then both groups and separating the subnets into there own phase two selector should work? You will also have to create security policies in order for the traffic to be allowed through the firewall. - 3rd party VPN gateway. You can also use phase2 to add or edit IPsec tunnel-mode phase 2 configurations to create and maintain IPsec VPN tunnels with a remote VPN gateway or client peer. If I bring UP another Phase, then 1 of the 4 current UP will be replaced with DOWN status. So having a single 0. Scope FortiOS v7. IKEv2 Phase 1 AES-254 SHA256 Group19 Phase 2 AES-254 SHA256 Group19 Had to select "One VP Would the FortiGate differentiate traffic matching Phase 2 selectors ( local subnets) I saw this KB below which is a similar setup, EXCEPT I have 2 different local subnets. 0 at our site and the remote address an internal address for the remote site lika 192. Components - FortiGate Antivirus Firewalls. With this, you'll fix your issue and at the same time possibly prevent further issues in the In the Phase 2 Selectors section, enter the subnets for the Local Address (10. Why not always use 0. patre Hi guys, I've got an interesting case where we have a VPN tunnel with one of our partners that works with a single phase 2 selectors but the moment we add additional selectors none of them work and they alternate between up and down constantly. And if you need to access different subnets through the vpn tunnel, you have to create several p2 selectors so I do not see the advantage Oct 21, 2017 · The basic Phase 2 settings associate IPsec Phase 2 parameters with a Phase 1 configuration. 3. Config is standard (generated by GUI wizard), I only added "localid-type auto" to both FGs. 2. 98. The Phase 2 selectors are also set to local 0/0 and remote 0/0. Why is that? Thanks and regards, Konsta What happens if you remove the new selector you added? To me it sounds like an issue on the other end, as the other redditor suggested that weird vendors eventually only support a limited number of phase 2 selectors. Subnet of first phase two selector: 192. In Phase 2, the VPN peer or client and the FortiGate exchange keys again to establish a secure communication channel. ASAs don’t support single phase 2 child SAs with multiple selectors in them, and require that each selector be in its own child SA, but ASAs support route-based VPNs as of 9. If route-add option is enabled for any valid phase2 selector a route will be dynamically added to the routing table. ScopeFortiOS. The keys are generated Phase 2 selector sources from dial-up clients will all establish SAs without traffic being initiated from the client subnets to the hub. Note: The following entries are not available under the phase2 command: config vpn ipsec phase2-interface Parameter Description Type Size Default add-route Also, If there are more than one subnets (both local and remote) configured over the IPsec VPN, there should be more than one phase2 selector configured instead of including multiple firewall addresses in a single firewall deal with group and defining it as a single phase2 selector Ref: Whenever FG gets restarted, IPSec tunnel phase2 won't come up, I have to bring it up manually. The keys are Jun 24, 2021 · This article explains the result of selector narrowing in conjunction with IKE v2. About Phase Selectors 2 Fortigate 1. 0, v7. 0/8) for both source and destination Your partner may help by sniffing on his firewall to check if the 4 sources' traffic is being correctly forwarded through the tunnel (I guess not) Some vendors just "show" this information as multiple phase 2 tunnels? Not tunnels specifically, but Security Associations (SAs) of which you need two for a tunnel. 140. As you can see, only 4 can UP at the same time. 14 Release Notes for details about this release. Solution In some cases, an IPSec tunnel may include more than one phase 2 selector. Jan 24, 2013 · You need multiple phase2 selectors or the FortiGate firewall will try to use the same SA for multiple subnets instead of creating a new SA. Solution During Phase 2 selectors, there will be the next option to configure the source and destinations. If you specify your networks in phase 2 you need to add the subnet that resides in VLAN2. Both tunnels are working as expected where we have connectivity from both sides. S Oct 25, 2019 · techniques on how to identify, debug, and troubleshoot issues with IPsec VPN tunnels. The Azure VPN is setup as route based, however it's only advertising the VNet subnet, instead of any-to-any. Feb 20, 2025 · Hello, R81. Does anyone have experience with this? Some more background. 0 defined for the local subnet on them, which is a no-go for this configuration. Dec 27, 2023 · some known issues between FortiGate and third-party devices and provides suggested fixes. Jun 30, 2025 · how FortiOS manages route overlap (when two or more dialup clients advertise the same protected network/subnet to the HUB). Oct 24, 2022 · how after configuring the IPsec tunnel and testing phase 1 and phase 2 are up and the tunnel is passing traffic. y. If you're going to a different vendor, in my experience you'll likely need to create Phase 2 Selectors for each possible combination. It results in only one subnet working at a time. It could also be a cause of stability issues. Jun 2, 2012 · Phase 2 configuration After phase 1 negotiations end successfully, phase 2 begins. Apr 10, 2025 · FGT-HUB (test_4_0) $ next In VPN Manager, there is no option to add Phase 2 Selectors as per FortiGate. Does anyone have experience with making it so I can connect to this server when I am connected to WIFI on a different subnet rather than having to hardwire every single time I need it? Sep 5, 2023 · I need to perform all configuration of a VPN Site-to-site "External Gateway" through Fortimanager. Multiple phase 2 definitions can be added for each phase 1 to allow using multiple subnets inside of a single tunnel. org/doc/html/rfc5996 Scope FortiGate. I have faced issues in the past with FortiGate-to-3rd party VPN that when you use address groups in the phase2-selector, the tunnel was being unstable. Aug 11, 2025 · Technical Tip: Explanation of different VPN IPsec phase2 selector configuration types on FortiGate Description This article describes the multiple options to configure phase2 selectors on VPN IPsec. 12356. Feb 2, 2024 · You may start by "temporarily reconfigure the tunnel's phase 2 selector from both ends (FortiGate & Checkpoint) with 0. 20 Take 92 trying to establish the tunnel with Fortinet. 0? Are there any benefits with it? In terms of security, you control it anyway through the security policies. 2, and v7. This article explains how to resolve Site-to-Site IPsec VPN Intermittent Connection due to phase 2 mismatch on each local and remote site respectively. SolutionWhen having a FortiGate act as a HUB/Dialup Server with multiple spokes/dial-up clients and the clients have overlapping phase2 selectors, for example, 0. e. Solution This method is used as a workaround if changing the subne Sep 18, 2023 · phase 2 selector keeps getting Status "down" after some days Hello everyone, right now we are having some strange problems regarding a vpn ipsec connection between our gateway and an external host who grants us access to two different networks (2 different customers). 0 will also accept any phase2 selector that is advertised inbound. Sep 19, 2019 · If the site-to-site tunnel is established between a FortiGate and a third-party firewall (such as Cisco, SonicWall, etc. The keys are May 18, 2018 · Phase 2 Selectors Hi! Should the Local Address be an internal address like 192. 0/0. Apr 23, 2024 · Hello, I am trying to setup a IPSec VPN tunnel between a Fortigate VM and a Cisco ASAv in GNS3. **If FortiGate to other firewall brand IPsec VPN, do it individually. Feb 18, 2021 · In cases where ping is used as the diagnostic tool to test connectivity between local and remote sites, it will fail despite having the required firewall policy, phase 2 selectors (if defined), and static routes/blackhole routes configured on the FortiGate. Scope FortiGate. To do that, it is necessary to make changes in phase2 of the existing custom tunnel. The keys are Checkpoint is policy based, Fortigate is route based. 200. But is there a way to only need one phase 2 selector for every local subnet? DevOps & SysAdmins: FortiGate IPsec VPN: Configuring Multiple Phase 2 Connections (Multiple Subnets)Helpful? Please support me on Patreon: https://www. May 22, 2023 · I'm trying to make a BGP enabled VPN connection from Azure to a local FortiGate and we're getting phase 2 selectors mismatch. 7 code. Jun 1, 2022 · how to add an automatic route towards each remote side with a different subnet when multiple Dial-Up VPN Clients are used. 3, phase2 selectors are 0. SolutionExecute the CLI comm Jan 28, 2025 · , in detail, how traffic can flow between three FortiGates in the GUI. The keys are **If FortiGate to FortiGate IPsec VPN, you can use groups. 6 and above the design was changed to show the status of the tunnel (i. The requirement is to do NAT as well as per below: Both 192. Optionally, expand Advanced and enable Auto-negotiate. The keys are If you are editing an existing phase 2 configuration, the Source address and Destination address fields are unavailable if the tunnel has been configured to use firewall addresses as selectors. I'm monitoring the device with Zabbix, which reads the 1. I'm gonna guess you have 0. The keys are Jun 16, 2022 · Hello, I have set up a custom S2S VPN At the Phase 2 Selectors I have configured "Named Address" objects with groups The local group contains 2 IPs, and the remote contains a subnet and 2 IPs. Jan 23, 2014 · I created multiple phase 2 on the fortigate side for a single Phase 1. Dec 13, 2022 · IPsec VPN Phase 2 Selector Subnets Best Practice Hi Firewall Gurus, I'm looking for best practice for the phase 2 selector subnets in a general case. Solution When configuring a site-to-site VPN between a FortiGate and another vendor's VPN gateway, it is necessary to only configure one (1) su Sep 21, 2023 · Hi Community, We have 2 IPsec Tunnels (Tunnel 10 and Tunnel 20) between Fortigates (Remote and Concentrator) with only 1 Phase 2 Selector configured and auto-negotiate disabled. Reference:https://datatracker. Jan 13, 2022 · Phase 2 Selector Limitation Hi, I'm trying to add some local and remote addresses on my VPN Tunnel Phase 2 Selectors and after I added all of them, I've encountered a red box when saving it. There is an option "Create Phase2 by Protected Subnet Pair" , but I didn't identify where I define the remote Nov 28, 2016 · This article describes how, when a FortiGate is behind an ISP that provides a dynamic IP address via DHCP or PPPoE, it is necessary to use an IPsec VPN dial-up client configuration on that device. 8. Within FortiGate to add communication on the WIFI networks we configured the phase 2 selector but need to add that subnet in AWS somewhere. In 5. ) what is the device on the other Side If no Fortigate may read recommendations from other Vendor. Set configurations of IPsec profile. 101. Solution To troubleshoot this, make sure there are enough phase 2 selectors on both local and remote sites. 0/26Subnet of second phase two selector: 192 Use this command to add a phase 2 configuration for a route-based (interface mode) IPSec tunnel or edit an existing interface-mode phase 2 configuration. 0/0 (or 10. Go to FortiGate, VPN -> IPsec Tunnels -> Select tunnel -> Phase 2 Selectors and select 'Add': This option can be done from Device Manager instead after the tunnel are created from the VPN Manager, using a GUI and also a Scripts. If there are 300+ Dial-Up Clients, then it would be hectic to add a quick mode selector in phase 2 for each Dial-Up client. It didn't affect any other VPN tunnels or traffic, just the dynamic peers; guessing due to route cache. However this VPN has the local and remote subnets configured in the phase 2. Check your phase 2 selectors on the spokes. Scroll down to Phase2 selectors. Sometimes, peer non-FGT FW will not be able to successfully negotiate if you use address group in p2-selectors. After phase 1 negotiations end successfully, phase 2 begins. Solution If there is more than one subnet (both local and remote) configured over the IPsec VPN, there should be more than one phase2 se I set the phase 2 selectors on the cradlepoints as the 192. The Quick Mode selectors determine who (which IP addresses) can perform IKE negotiations to establish a tunnel. At the IPSEC Monitor though I see two phase 2 selectors. Jun 22, 2023 · Once again, I used IKEv1 and Main mode, and set up multiple proposals. Jul 17, 2025 · I have a FortiGate 1000D, v7. Nov 9, 2023 · issues with multiple dial-up IPsec VPNs on the HUB after upgrading to v7. The IPSec monitor can be used to confirm that a tunnel and all Phase 2 selectors are operational. 0/0, it is possible to experien Jan 6, 2023 · how to configure an IPsec tunnel with Overlapping Subnets using vips. The configuration is pretty simple and straightforward. Solution When IPSec VPN is implemented between F Apr 23, 2024 · Hello, I am trying to setup a IPSec VPN tunnel between a Fortigate VM and a Cisco ASAv in GNS3. Solution The three FortiGates in this example are Glendale (A), Mo Enable to use the FortiGate public IP as the source selector when outbound NAT is used. 1. How to configure VPN for multiple subnets - Fortinet Community When I do this, the VPN works as it should. If possible, change the VPN to use only one selector (0. Apr 23, 2024 · Multiple phase 2 selectors needed for multiple subnets? Hello, I am trying to setup a IPSec VPN tunnel between a Fortigate VM and a Cisco ASAv in GNS3. x network, then configured the static route/policies on the Fortigate accordingly and was finally able to ping the vendor's app servers from a laptop connected to the Cradlepoint. I created a group for the local subnets, and another for the remote subnets. Apr 29, 2010 · Hi Gentlemen, Do you know if there is a way (GUI, CLI) to put multiple " source addresses" in the quick mode selector ? I need around 20 subnets, is there a syntax to put em all on a single line or, do I have to create a specific phase 2 for each and every subnet that will go thru my VPN ? PS : 0. When using a route-based IPsec VPN configuration, Phase 2 or quick-mode selectors must be defined with internal/protected subnets to allow the IPsec VPN dial-up server configuration on the peer Phase 2 configuration After phase 1 negotiations end successfully, phase 2 begins. I'm talking about in decent network segmentation internal network that connects to outside. The keys are After phase 1 negotiations end successfully, phase 2 begins. ) Negotiation success do not meen that initiated an SPI. Let's assume you have the following traffic selectors: 10. If you're doing Fortigate to Fortigate, you can create one Phase 2 Selector and use address groups containing all your subnets. So, this article describes how to add an automatic Phase 2 configuration After phase 1 negotiations end successfully, phase 2 begins. I haven't found any relevant in logs. FortiGate-7000 for FortiOS 5. y/28, which represents the networks of our customers/clients. 13, with some VPN connections. As Apr 23, 2024 · I found the following Technical Tip where they say that I need to create multiple phase 2 selectors for each local subnet from the Fortigate. 20. If Phase 2 does not appear when u Phase 2 configuration After phase 1 negotiations end successfully, phase 2 begins. When I create a IPSec tunnel on the Fortigate, I use a group-object with all the local subnets from the Fortigate as the local-network at the phase 2 selectors. 6. phpviw hhy iwzif ccggl trfmfpm jugm mswzzo odrz amckaf fxozn nwnrlwf xbe zubaha qdq bagp