Fortigate phase 2 not coming up Solution The issue is phase 2 status of IPsec tunnels is displayed as down in the secondary. Restart the Apr 5, 2023 · VPN Tunnel between Cisco Meraki model MX65 current Firmware MX 17. 6, v7. Pfsense has the tunnel but no traffic. This is the ip config: Location 1: 10. 2 (thats the device I am Oct 14, 2022 · - After some trouble shooting, pinging, checking routes, connectivity, rebooting, firmware upgrade, etc. IPSec VPN Set Up – Palo Alto Jul 16, 2023 · The administrator has determined that phase 1 failed to come up. 6 wi Whenever FG gets restarted, IPSec tunnel phase2 won't come up, I have to bring it up manually. Side A - ASA 5510 Side B - Cisco 891 Side B initiates connection, Phase 1 settings Pre-Share, AES-256, DH Grp 5, Hash - SHA, Lifetime - 28800. Scope. 4 set psksecret ENC XXX next end FortiGate Nov 19, 2023 · Some customers have reported IPSec flapping or packet loss after upgrading FortiGate to v7. Nov 23, 2024 · This article describes why one of the Phase 2 selectors is not present in the IPSec monitor. Solution: During the IPSEC configuration on FortiGate sometimes the tunnel remains down even if the configuration is correct. 2 and 5. ) Oct 21, 2024 · If you run like a continuous pinging, but never get the second phase2 come up, likely the other side of the selector config is not matching the local config. The keys are generated automatically using a Diffie-Hellman algorithm. Yes (SA=1) - If traffic is not passing, - Jump to Step 6. Oct 16, 2019 · the changes in ipsec monitor page in 5. Check the logs to determine whether the failure is in Phase 1 or Phase 2. Step 1: What type of tunnel has issues. It would be helpful if we can use a common VPN template and <- FortiGate responds (with no complaints logged in the debugs)-> client sends an informational message back (not normal) <- FortiGate tries to retransmit its first reply two more times, then gives up The client most likely doesn't like something, and probably tries to say as much in the informational message. Now there wasn't a IKE policy to this value on the ASA, so I added one (see screenshot). The following options are available in the VPN Creation Wizard after the tunnel is created: Oct 25, 2024 · Yeah, I thought about doing exactly that, but then there is the risk of the VPN not coming back up for whatever stupid reason. The following options are available in the VPN Creation Wizard after the tunnel is created: Nov 20, 2017 · We are trying to create an IPSEC tunnel and phase 1 is working just fine. 6 and above the design was changed to show the status of the tunnel (i. If the VPN comes up but traffic is not flowing, check the session setup with "diag deb flow" Get the params for setting up filters, output etc. 0:00 Overview/Topology0:42 Tro Oct 16, 2016 · During Phase 2, you select specific IPsec security associations needed to implement security services and establish a tunnel. If you confirmed that FortiClient received the Remote access profile updates from EMS and that you can establish the tunnel manually, verify the configuration by doing the following. Configuration of phase1 and phase2 parameters is ok and checked, but the tunnel doesn't come up due to a local subnet issue. Jan 29, 2025 · If a phase 2 selector did not come up after using the force bring-up option, check each device to see if the set phase 2 selector IP address or subnet mask is the same. The basic Phase 2 settings associate IPsec Phase 2 parameters with the Phase 1 configuration that specifies the remote end point of the VPN tunnel. 4 FortiGate Mar 23, 2024 · if the VPN doesn't come up completely, it could be. If an Internet Protocol security (IPsec/Phase 2) connection fails, then complete the following:. The following options are available in the VPN Creation Wizard after the tunnel is created: HI Team, i'm new with ipsec, trying to setup a IPSEC vpn between fortinet and SRX but it is not working . The thing is I keep getting this on the 5. Problem is, only the first phase 2 entry comes up, and i cannot find a related bug on this pfsense version. 0, at least in 6. 0 or 7. The IPSec monitor can be used to confirm that a tunnel and all Phase 2 selectors are operational. 0/24 . 13, v7. This is the VPN log: Phase 1 is successful but Phase &hellip; Hi Friends, I am trying to construct a S2S VPN between Fortigate 300C and Cisco ASA5506X. i have captured the packet and found that SRX is not initiating ike communication. SENDING>>>> ISAKMP OAK IKE_SA_INIT (InitCookie:0x964d86bb85c7dd9f RespCookie:0x0000000000000000, MsgID: 0x0) (NOTIFY: Invalid KE Payload) Fortigate Fortinet Documentation Library Windows started up but tunnel did not come up. Solution. When Ping from computer with vlan10 I see deny and hit policy 0 in FAZ. 6. Aug 31, 2023 · Disable PFS in phase 2 on both sides to check the issue. After phase 1 is negotiated, it does not proceed to phase 2 negotiation. I have built 100's of tunnels, but this is the first setup with Fortiextender. 0/0 on both sides. I do not have access to the fortigate but I have screenshots so I'll post all the info field by field: Fortigate Phase 1 - IP 111. In the example above the first Phase 2 selector and the third one have the same remote and local subnet. Sonicwall is sending this. Check the phase2 config and parameters. We will be able to get access to the VPN tunnel for phase II. The following options are available in the VPN Creation Wizard after the tunnel is created: The basic phase 2 settings associate IPsec phase 2 parameters with the phase 1 configuration that specifies the remote end point of the VPN tunnel. I’m also experiencing a similar issue with an IKEv2 IPSec tunnel between a Fortigate (7. The following options are available in the VPN Creation Wizard after the tunnel is created: Sep 25, 2018 · Phase 2: Check if the firewalls are negotiating the tunnels, and ensure that 2 unidirectional SPIs exist > show vpn ipsec-sa > show vpn ipsec-sa tunnel <tunnel. Jul 16, 2023 · The administrator has determined that phase 1 failed to come up. 0/0. It is causing frustration and client is really upset as this issue is going on for over a month without resolution! The basic phase 2 settings associate IPsec phase 2 parameters with the phase 1 configuration that specifies the remote end point of the VPN tunnel. Sometimes, the VPN tunnel is not coming up because of configuration error/mismatched parameter(s) between the 2 VPN peers or because the connection is being blocked by Firewall policy. If I log into the corresponding FGT or our FGT (other end of the tunnel) and use the web gui or cli to make it bring up the tunnel again it come up at once and without any issues. 26. config vpn ipsec phase1-interface Jul 27, 2019 · After a bit of help with a pfsense to fortigate IPSec tunnel. Check the encapsulation setting: tunnel-mode or transport-mode. Apr 16, 2024 · To solve the issue is to disable npu offloading under phase 1. Now we want to add our server networks, i added a phase 2 selector like this: Jun 10, 2022 · Fortigate VM to Sonicwall. Site-to-Site VPN. Feb 18, 2021 · Use the following steps to assist with resolving a VPN tunnel that is not active or passing traffic. one side was upgraded, the other was not), it is possible for the IPsec VPN to not come up on Phase2. The following options are available in the VPN Creation Wizard after the tunnel is created: Phase 2 configuration VPN security policies Blocking unwanted IKE negotiations and ESP packets with a local-in policy Jun 2, 2015 · The basic phase 2 settings associate IPsec phase 2 parameters with the phase 1 configuration that specifies the remote end point of the VPN tunnel. It just would be sort of nice to see that the Phase2 "Mirth_Test" interface is up rather than just seeing "MetropolisIndia_1" is up. The administrator has also re-entered the pre-shared key on both FortiGate devices to make sure they match. Managed to get through phase 1. Sep 21, 2023 · Problem solved! Destination Address mismatch between FGTs where we had x. Solution This issue arises when no Phase-2 selector is configured in the IPSec tunnel. Confirm that the user is a member of the user group assigned to L2TP. Apr 4, 2021 · A network administrator is troubleshooting an IPsec tunnel between two FortiGate devices. The basics of IPsec troubleshooting apply: Is the traffic allowed? Is the traffic routed correctly? Is the traffic allowed in the phase 2? Do a debug flow on both sides to be sure. The following options are available in the VPN Creation Wizard after the tunnel is created: The phase 2 proposal parameters select the encryption and authentication algorithms needed to generate keys for protecting the implementation details of security associations (SAs). 0+. EAP setting, which is disabled on the FortiGate side by default, EAP can be checked via the command: show full vpn ipsec phase1-interface | grep eap. 111. 2- the DHCP server is not set to "type ipsec". 111 Specify the source/dest IP ranges in the FW policy created in step 2. 2. 3. X. Check the following. y/28, which represents the networks of our customers/clients. If there are multiple subnets, add and specify each subnet in Phase 2. Currently VPN phase2 status in line view has been removed from VPN IPsec monitor. 2 is down! It came up for sometime but with no communication in between sites. Which is to say, the Fortigate seems to think all phase-2 SAs are up, but the ASA only sees the first subnet pair and traffic fails - but the selectors come up fine when the ASA initiates them. My config: crypto isakmp policy 45 enc The basic phase 2 settings associate IPsec phase 2 parameters with the phase 1 configuration that specifies the remote end point of the VPN tunnel. name: TEST. Check that the encryption and authentication settings match those on the Cisco device. 1- that either the policy or the route to the remote network are missing. 084852 ike 0::64181:12:374663: incoming Feb 18, 2021 · Use the following steps to assist with resolving a VPN tunnel that is not active or passing traffic. Sys admin says it requires a user for phase 2 though, not sure how I would specify that? The tunnels is up both Phase 1 and Phase 2. If the Phase 2 tunnel is still down. Same happens when i try the other way arround. ScopeFortiGate. or. (Or phase 2 lifetime) Fortigates by default don't bring up phase2 unless traffic matches a firewall policy, I'd probably edit it to stay always up. I created a VPN with 10 Phase 2 Selectors between an FG200E and FG100D. Resolution. 0 as others have mentioned and my opinion it is not good practice. To fix the issue we need to match the configuration of IPSec Phase 2 proposal in Firewall B. FortiGate. If you are still unable to connect to the VPN tunnel, run the following diagnostic command in the CLI: May 12, 2025 · This article describes an issue where an IPsec tunnel phase2 will not come up due to a Phase 2 Perfect Forward Secrecy PFS settings mismatch. If you are still unable to connect to the VPN tunnel, run the following diagnostic command in the CLI: Edit: well, not sure what's the actual cause of the problem, but I was able to get it working by having the HQ FortiGate's subsidiary VDOM be the dialup initiator instead of the usual other way around. The VPN is a cookie-cutter configuration (custom, IKE-1, AES256-SHA256-DH19 on both phases) that's worked for me before. I am trying to get an IPSEC Tunnel up and running and phase1 says it negotiate success according to the logs, then Phase2 never attempts. Now phase 2 negotiation errors. Pfsense lan currently set to a /32 and remote end of tunnel is also a single host /32 Oct 21, 2024 · This article explains how to add an IPSec phase 2 selector when FortiGate is giving error: &#39;-56 empty values are not allowed&#39;. Aug 21, 2022 · I’m also experiencing a similar issue with an IKEv2 IPSec tunnel between a Fortigate (7. 2 Sep 16, 2024 · Troubleshooting Tip: Issue with establishing Phase 2 in a site-to-site IPsec tunnel between FortiGate and Sonicwall Description This article describes how to address one possible failure scenario of P2 establishment on an S2S IPsec tunnel between FortiGate and SonicWall. We originally had… While it creates route based VPN's, the address objects it creates are specified in the Phase 2 subnets, instead of 0. version: 1. it is determined that Phase 2 simply won't go up. The standard config used is 'Subnet'. 3, phase2 selectors are 0. Bottom line: it seems my Phase 1 proposals are good and working, but Phase 2 is NFG - so the tunnel isn't coming up. I am on fortios 7. 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. This could be due to a string pattern match issue with another tunnel name. Aug 17, 2018 · But, my VPN tunnel is not coming up. The connection is OK. No idea why it will not come up. Adjusting the object automatically Phase 2 Selectors were adjusted having only one there! Aug 30, 2022 · TroubleshootingFour most common issues we generally face:1. So it's a little bit of an "if it's not broke, don't fix it". Dec 21, 2021 · Hi all, got configured IPSec tunnel it is up (phase 1 and 2) but no Outgoing Data. If a duplicate instance of the VPN tunnel appears on the IPsec Monitor, reboot your FortiGate unit to try and clear the entry. 0/16. Name: VPN ASA to SW Local Public IP: 1. It should be working. Location 2: 10. 1 Remote Public IP: 2. Configure Phase 2 of FortiGate remote and local IP as 'Subnet'. VPN Tunnel is established, but no traffic passing through4. Not sure if they changed this behavior in 7. I've attached the crypto debug output. x. 084852 ike 0::64181:12:374663: incoming Feb 26, 2021 · Hi, I'm trying to get an IPsec tunnel working, but it seems phase 2 isn't coming up. 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. name> Check if proposals are correct. SolutionExecute the CLI comm Jun 10, 2022 · Fortigate VM to Sonicwall. 6 and above firmware versions. The configuration seems pretty straightforward. The following options are available in the VPN Creation Wizard after the tunnel is created: Jan 6, 2025 · Needless to say, I've already created the necessary Address Objects to represent both LANs and I've setup the necessary Firewall Rules/Access Rules - although I don't believe I'm yet at the point where those are coming into play. In most cases, you need to configure only basic Phase 2 settings. 128, so FGT Remote set the original Phase 2 Selectors DOWN creating automatically another Phase 2 Selector excluding the wrong network. Tunnel had previously worked with a paloalto appliance in place of pfsense, suggesting remote fortigate side is ok. Fortigate 100E, v5. But when I try to bring up phase 2 selectors, it pretty much does nothing but keep successfully negotiating phase 1. Config is standard (generated by GUI wizard), I only added "localid-type auto" to both FGs. y. 0/0 should be kept unless you need to circumvent problems caused by ambiguous IP addresses between one or more of the private networks making up the VPN. There are configuration options for a dedicated backup VPN tunnel (via CLI only though) - you can set a 'monitor' setting in the secondary VPN's phase1, meaning it monitors the primary VPN, and if that goes down, then it takes over. SENDING>>>> ISAKMP OAK IKE_SA_INIT (InitCookie:0x964d86bb85c7dd9f RespCookie:0x0000000000000000, MsgID: 0x0) (NOTIFY: Invalid KE Payload) Fortigate Jun 14, 2019 · Hi, I am trying to set up a ipsec site to site VPN between two Fortigate devices: The branch unit is connected to the ISP router which gets a dynamic IP-address. This issue can happen to both remote access and site-to-site tunnels. Added complexity of the remote end having another firewall in place before the fortigate. I create all my tunnels with the wizard but don't bother to go back after the fact and change phase 2 to 0. However for some reason, the network of one of them keeps getting the phase 2 status "down" and the connection is lost. 20. Connecting means Phase 1 is down. X Quick introduction into FortiGate VPN troubleshooting tools along with 5 sample scenarios that you may run into when deploying. If the named subnet is a Group Subnet, the tunnel will not go up. If possible, change the VPN to use only one selector (0. If Phase 1 is down, additional checks must be performed to identify the reason. I see the phase II tunnels up, but sometimes it just stops getting traffic on the return, until I manually reset the tunnel, sometimes it`s just one phase II tunnel sometimes its all that has this issue. If incorrect, logs about the mismatch can be found under the system logs under the monitor tab, or by using the following command: > less mp-log Feb 2, 2017 · I have an up and running site-to-site vpn between two fortigates. You do NOT need 0. Policy from Zone (with vlan10 in it) to VPN tunnel configured, Static Route (with subnet I try to reach, and VPN interface configured) also. Repeat steps 2,3,4 for the other way around (Azure. Apr 5, 2023 · VPN Tunnel between Cisco Meraki model MX65 current Firmware MX 17. Re-try connection and, if possible, give us the Fortigate logs. I have been trough all of google allready :) . May 2, 2015 · Without receiver (Fortigate) logs it is difficult to give a definite answer. ScopeFortiGate. After enabling the configuration will fix the issue. I do not have access to the ASA on the customer side, but they assure me that they have it configured on their end as well. Dec 2, 2018 · Hi, I have the following issue I am trying to solve: setup a static site2site VPN tunnel between a Fortigate 100E (local) and a Cisco ASA (remote). Also, the bring-up option is not available for dial-up tunnels. 1, or later versions. Jan 16, 2025 · FortiGate. Some settings can be configured in the CLI. Their subnet is a /27 public IP and mine is a private IP subnet. Ensure bidirectional connectivity between the VPN gateways (typically, this is the IP address on the WAN interface). Everything is same on both ends. Jul 19, 2019 · IPsec tunnel does not come up. Optionally specify the source and destination IP addresses to be used as selectors for IKE negotiations. Based on the phase 2 configuration shown in the exhibit, what configuration change will bring phase 2 up? Feb 21, 2020 · If they initiate the connection on their end it does work and I can ping across until the connection goes down - then I can not initiate it - it keeps failing at Phase 2. Dial-Up VPN. phase1) rather than the individual phase2s. Phase 1 (ISAKMP) security associations fail2. Sep 14, 2022 · In this scenario, the IPsec tunnel is configured between FortiGate and FortiGate/non-Fortinet peer, with appropriate phase1 and phase2 configuration on respective nodes, the phase 2 remains down. VPN interface to SSL. x/28 and y. Aug 5, 2022 · I am trying to get an IPSEC Tunnel up and running and phase1 says it negotiate success according to the logs, then Phase2 never attempts. Scope FortiGate v6. Solution: In the output of FortiGate debugging, the following can be observed: Sep 20, 2023 · FortiGate v7. interface: port1 3 Nov 23, 2024 · When checked under references for this IPSec tunnel, the concerned Phase 2 selector shows up, but that Phase 2 selector is slightly towards right-hand side: If that is the case, then that Phase 2 selector is repetitive. Nov 23, 2020 · I created a VPN with 10 Phase 2 Selectors between an FG200E and FG100D. The router forwards all traffic to a DMZ-IP, what in this case is the Fortigate50E. The basic phase 2 settings associate IPsec phase 2 parameters with the phase 1 configuration that specifies the remote end point of the VPN tunnel. In IKE debug logs, it can be seen that phase1 negotiation is successful, in phase 2, the negotiation stops when the responder is unable to process the May 18, 2018 · I have this same Issue, everything seems to be correctly configured, outgoing and incomming policies, static route, ike, encryption and DS groups on both FG devices. The phase1 gets torn down and starts all over again. But on Cisco it is unable to bring up the tunnel as Phase 2 is failing. Nov 28, 2020 · Hello, We have a site-site IPSEC tunnel between Fortigate and Cisco. Phase 2 (IPsec) security associations fail3. I summarized the subnets when configuring the phase 2 entries so they dont overlap with 172. I've also attached the config of the other end of the tunnel. From the flow traces and debugs I don`t see any issues, sadly I cannot log into the ASA side as it`s not managed by me. 0. DDNS is set up and a hostname is created and working. The Fortigate seems to be fine as it is showing the tunnel status as UP. ) Dec 26, 2024 · The local-gateway (local-gw) setting is not explicitly configured in the FortiGate VPN configuration. Oct 24, 2022 · how to use &#39;diagnose vpn ike config list&#39; to troubleshoot IPSec VPN issue. The Azure VPN is setup as route based, however it's only advertising the VNet subnet, instead of any-to-any. IPsec tunnel does not come up. Based on the phase 1 configuration and the diagram shown in the exhibit, which two configuration changes can the administrator make to bring phase 1 up? (Choose two. 10. Solution: This article goes over troubleshooting for a route for the IPSec tunnel showing inactive even though the IPSec tunnel is up. 5 fg60poe. This seems to be working well we can ping clients on both locations. Sometimes phase 1 AND 2 will come up even if phase 2 is mismatched, for one phase 1 lifetime. The administrator has determined that phase 1 status is up, but phase 2 fails to come up. 4. PFS and or DH group. 1. It is causing frustration and client is really upset as this issue is going on for over a month without resolution! The phase 2 proposal parameters select the encryption and authentication algorithms needed to generate keys for protecting the implementation details of security associations (SAs). Scope: IPSec VPN Site-to-Site Fortigate to Palo Alto. The basic phase 2 settings associate IPsec phase 2 parameters with the phase 1 configuration The basic phase 2 settings associate IPsec phase 2 parameters with the phase 1 configuration that specifies the remote end point of the VPN tunnel. If the FortiGate unit is a dialup server, the default value 0. 0). Check the user password. Cisco ASA shows Phase 1 is completed then keeps trying for Phase 2 but fails. 2 with Fortigate Firewall 1500 current Firmware v6. Tried comparing everything on both sides but not able to see why it is failing. May 12, 2025 · This article describes an issue where an IPsec tunnel phase2 will not come up due to a Phase 2 Perfect Forward Secrecy PFS settings mismatch. Oct 30, 2017 · Use the FortiGate VPN Monitor page to see whether the IPsec tunnel is up or can be brought up. 0 instead x. Jul 31, 2020 · Phase 1 Algo: AES128 Phase 1 Hash: MD5 DeadPeerDetection: Enabled IKE v1 Phase 2 Algo: AES128 Phase 2 Hash: MD5 Phase 1/2 DH Group: 2 Phase 1 Key Lifetime: 60 mins Phase 2 Key Lifetime: 30 mins PFS Enabled . Dec 26, 2024 · The local-gateway (local-gw) setting is not explicitly configured in the FortiGate VPN configuration. e. I haven't found any relevant in logs. If you really need tunnel to stay up even if no interesting traffic and remote side is configured not to reply to pings then configure extra fake static route let's say /32 to one of IPs at remote side with ping interval 60 (it is biggest you May 4, 2018 · Here is what I show in the CLI for phase1(the second one is the IPSEC tunnel I created): FGT30E3U17035555 # show vpn ipsec phase1-interface config vpn ipsec phase1-interface edit "Remote-Phones" set type dynamic set interface "wan" set keylife 10800 set peertype dialup set mode-cfg enable set proposal aes256-sha256 set dhgrp 16 14 5 set xauthtype chap set authusrgrp "Remote-Phones" set usrgrp Hi, I've configured a ipsec site-to-site vpn like this: FortiGate-40F # show vpn ipsec phase1-interface config vpn ipsec phase1-interface edit "vpntest" set interface "a" set keylife 3600 set mode aggressive set peertype any set net-device disable set proposal aes128-sha256 aes256-sha256 aes128-sha1 aes256-sha1 set localid "XXX" set remote-gw 1. Aug 29, 2024 · After upgrading one side of the VPN peer (i. To prevent issues i disabled every P2 entry except the critical one. I have two Fortigates running 5. vd: root/0. 4 (30E) is behind a NAT device - thus nat'ing its outbound traffic. Solution: An IKE debug shows the following messages: 2025-03-12 13:04:04. Wh The tunnel shows as up but there is no complete connectivity. configuration and topo is as below. Adding the Phase-2 selector by selecting the edit button shows Mar 11, 2025 · On FortiGate Phase 2 settings. 6) and a Linux VM running StrongSWAN. Phase1 is up, and the TUNNEL created time, visible with diag vpn ike gateway list name <name> showed there is no issue on phase1. 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. In 5. May 2, 2015 · Update 2. For some reason I am unable to get this vpn up n runnin. I have configured phase 2, so it should be negotiating it. Jan 15, 2025 · If you are facing this kind of issue, you should use some cli command to fix issue- You need to first take the packet capture on the FGT side by using the sniffer as below:dia sniffer packet any " host <DST IP> and icmp " 4 0 l Can you try to run the following debug to see if traffic is allowed and passing through the tunnel correctly:diag debug resetdiag debug flow filter addr X. Step 2: Is Phase-2 Status 'UP': No (SA=0) - Continue to Step 3. Both sites run on FG 7. Apr 9, 2018 · hi all. 4 - the 5. (Uses P1 settings for P2) It's probably going to be a phase two mismatch. phase 1 is no comming up. Make sure that the Site-to-Site VPN Phase 2 parameters on your customer gateway device match the VPN's tunnel settings. 0/24. This issue affects topologies where there are dynamic IPSec interfaces in redundancy, with IKE used to install a route static into the table through the Phase 2 selectors negotiated. . Intermittent VPN flapping and disconnectionPhase-1 and Phase-2 configuration should be identical on both sides of the tunnel. Check if the Phase 1 and Phase 2 Selector of the IP Sec tunnel is up by going to Dashboard -> Network and then selecting 'IPSec'. Phase 2 is no security: the latter is defined and achieved with your firewall policy ruleset. VPN interface) You're done. Am i missing something Oct 25, 2019 · Established means Phase 1 is up and running. Scope: FortiGate. Check the settings, including encapsulation setting, which must be transport-mode. FortiGate and Google Cloud Platform. However, there is only 4/10 Phase 2 Selectors can UP at the same time on the FG100D. Analyzing firewall logs showed the tunnel established was different than expected, and had a different PSK. Continue Reading: Partial Redundant Route Based VPN FortiGate. Apr 20, 2023 · If there is interesting traffic then phase 2 is negotiated and tunnel stays up (or comes up if down). 2 Dec 27, 2023 · The FortiGate uses the same SPI value to bring up the phase 2 negotiation for all of the subnets, while the Oracle expects different SPI values for each of its configured subnets. And the remote end adde Mar 11, 2025 · the misordering of the address member configured in &#39;dst-name&#39; in IPsec phase 2 in the secondary as the cause of the phase 2 tunnel status being down in the secondary. For FortiGate to another third-party device. When i try to ping from Local lan to remote lan i can see in dianostics that the packets leave the firewall, but it is not received on the other end. Mar 21, 2018 · Problem is that the tunnels do not come up again automatically then. If several phase 2s are configured for phase1, only a few stay up. Solution: In some cases, an IPSec tunnel may include more than one phase 2 selector. Fortinet Documentation Library Windows started up but tunnel did not come up. There are timeouts and retries, but no other obvious cause. 0/24 -> 10. Config has not changed anywhere, everything else seems to work just fine, it's just this phase 2 that won't work. FortiExtender doesn't matter. The tunnel comes up fine and passes traffic without any issue, but during the renegotiation it seems to go offline and needs manual intervention to bring it back up again. To verify the configuration: Enable diagnose debug application fnbamd -1 debugs on the FortiGate. First, ver 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. In this scenario, when the remote peer initiates the VPN connection to the secondary IP address, the FortiGate attempts to use its primary interface IP for the IKE negotiation. If you're confident both are matching, you need to run IKE debug hopefully on both sides. If I bring UP another Phase, then 1 of the 4 current UP will be replaced with DOWN status. Here are some output A - reduce the phase 1 proposals to the first 2 ciphers B - reduce the phase 2 proposals to the first 3 ciphers C - reduce both proposals to using just DH group 5 D - change key lifetime to 28800 Test that and see what happens to the tunnel EDIT: Formatting. The basic phase 2 settings associate IPsec phase 2 parameters with the phase 1 configuration Feb 2, 2012 · Hi all, I have a very perplexing issue. Aug 4, 2023 · This articles describes a solution for an issue with IPSEC phase2 observed between FortiGate and Palo Alto. The two firewalls are geographically separated but are on the same ISP, same type of "datacenter" fiber service, same municipal area. Remove any Phase 1 or Phase 2 configurations that are not in use. Let's begin with the obvious: reconfigure your VPN in main mode (not aggressive mode) and change type from transport to tunnel. The traffic flow on UDP port 500 can be seen bidirectionally still the phase-1 remains down. Using multiple phase 2 tunnels on the FortiGate creates different SPI values for each subnet. I've got 2 subnets one and and 4 the others - am I really going to need 8 phase2-interface statements and 8 IPV4 policies, or is there a better way of Optionally specify the source and destination IP addresses to be used as selectors for IKE negotiations. Restart the Feb 7, 2023 · Hey OptimalPyme, it does sound a bit as Graham described, that the second tunnel is interfering with the first. The tunnel won't come up and the sonicwall is responding with Invalid Syntax. from a KB article. oofzp dnus egqns ohizjl koqxs zip hlvajg wrqe ghhpma zwmjooxc