DPD works by sending ISAKMP/IKE keepalives via UDP/500 (or UDP/4500 with NAT-Traversal in-use), and in the event that the keepalives fail, the VPN tunnel is restarted (which can help to re-synchronize the SPIs and Security Associations between both VPN endpoints). name=Jason ver=1 serial=2 0.0.0.0:0->175.*.*. Traffic capture (or IKE debug) shows that the Check Point ClusterXL keeps sending the IKE Phase 2 "Child SA" packets with the SPI from the previous IKE negotiation. set dstintf "wan1" Have you tried the Tunnels using their Public IPs on each side instead of DDNS? proxyid=TestJason proto=0 sa=1 ref=2 auto_negotiate=0 serial=12 https://kb.fortinet.com/kb/documentLink.do?externalID=FD41601 This line -> set use-public-ip enable sets the DDNS to the public IP adres instead of the WAN1 IP adress 2 [deleted] 3 yr. ago Hey guys, Administrators may also see the following when running IKE debugs (diag debug app ike -1) while these logs are occurring: The Security Parameter Index (SPI) is a value that is sent with every ESP packet, and is used as a means of matching incoming ESP packets to the correct IPsec tunnel on the VPN endpoint. set logtraffic all Fortigate Log Screenshot: Hi all, * npu_lgwy=0.0.0.0 npu_selid=c, dec:pkts/bytes=0/0, enc:pkts/bytes=0/0 edit 28 This topic has been locked by an administrator and is no longer open for commenting. Adjusting the KeyLife value in Phase2 (on both the gateway and client) can be useful for verifying if the unknown SPI problem occurs more or less frequently. http://kc.forticare.com/default.asp?id=1654&SID=&Lang=1 Compatibility This integration has been tested against FortiOS version 6.0.x and 6.2.x. Pulling lack of hair out!! This is a pcap interpretation of the first 3 packets of the VPN attempt: SSwan port 500 -> Fortigate port 500. The Phase 1 parameters identify the remote peer or clients and supports authentication through preshared keys or digital certificates. Jul 17 23:03:33 localhost pluto[31358]: " twghnet" #5: transition from state STATE_MAIN_I3 to state STATE_MAIN_I4 The meaning of the message is that one side of the IPSEC tunnel received a packet with an invalid SPI. When an IPsec VPN tunnel is up, but traffic is not able to pass through the tunnel, Wireshark (or an equivalent program) can be used to determine whether there is an encryption mismatch. - In some scenarios, it's possible that a random host on the Internet is simply sending ESP packets to the FortiGate's public IP, even if a VPN tunnel had not been established between this remote peer and the FortiGate beforehand. Wireshark (tethereal) Thanks. As a side note, it is not possible to drop incoming ESP packets as an attempt to prevent the 'unknown SPI' log message from being generated. I also don't think this is specific to advpn-related config as I've seen this in dialup and standard site-site configs. # For Red Hat Enterprise Linux and Fedora, leave protostack=netkey Created on Note: For PFS, it is the same if it is on or off. ------------------------------------------------------ leftnexthop=175.45.62.181 NVM guys, set action ipsec " Received error notification from peer: INVALID_SPI" on the remote peer Finally the myth is solved eventually. 1st what' s your config looking like? Of course remember to set those Firewall Policy, as in the Fortigate Manual Appendix B: Maximum configuration values. ah=sha1 key=20 df3c7aaa9cfecb0b8ef13f43b53fb83020facbdd Thanks! 12:45 PM, Created on esp=3des-sha1 spi='3a4e6946' seq='0000002d'. stat: rxp=0 txp=0 rxb=0 txb=0 Inside the Fortigate web control center there is a icon that links directly to the Fortigate help desk. life: type=01 bytes=0/0 timeout=7150/7200 * => 175.*.*. That error normally means that something is trying to connect to the MX's VPN service - but that there is something invalid in the negotiation. * ESP ESP (SPI=0xe30e81f4) * -> 116.48.*. Uses the appropriate lifetime in seconds for IKE (phase1) for your IKE version. Use these resources to familiarize yourself with the community: Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. First thing first, why in my tunnel (the upper tunnel is for another office), there is a 0.0.0.0 IP point to my 175.*.*. fortimail dataset: supports Fortinet FortiMail logs. 740475. * -> 116.48.*. These SPIs are created when an IPsec tunnel is formed between two endpoints, and also these SPIs are recreated whenever the VPN tunnel Phase 2 Security Associatiations (SAs) are rekeyed, or when the tunnel is restarted. And more so on the ipsec SPIs? Your fgt side is set for 2hrs nd iirc the keylife on openswan is like 1hour, but I ' m not 100% sure. To inquire about a particular bug or report a bug, please contact Customer Service & Support. thanks so far. * server instead of 116.*.*. Anti Virus Application Control DNS Filter Endpoint Control Explicit Proxy Firewall FortiView GUI HA Hyperscale Intrusion Prevention IPsec VPN Log & Report Proxy REST API Routing Security Fabric 04-17-2007 You can increase access security further . list all ipsec tunnel in vd 0 IPsec server with NP offloading drops packets with an invalid SPI during rekey. 2 Nysyr 2 yr. ago FGT and Openswan? Does Anyone know what this is about? 10:24 AM, Created on Find answers to your questions by entering keywords or phrases in the Search bar above. dpd: mode=active on=0 idle=5000ms retry=3 count=0 seqno=36393 seems to default to 0 always? *' These are the VPN parameters: Route-based VPN, that is: numbered tunnel interface and real route entries for the network (s . charon [5424]: 03 [NET] received unsupported IKE version 9.9 from (FORTIGATE), sending INVALID_MAJOR_VERSION. How to troubleshoot. The ESP packet invalid error is due to an encryption key mismatch after a VPN tunnel has been established. Using the sniffer, and decoding the packets is explained in the following Fortinet Knowledge Base article: Troubleshooting Tool: Using the FortiOS built-in packet sniffer. Jul 18 00:41:52 localhost pluto[31358]: " twghnet" #6: STATE_MAIN_R2: sent MR2, expecting MI3 The following issues have been identified in version 6.4.8. The SPI (Security Parameter Index) is used to identify the SA (Security Association) of the packet - which contains the information needed to handle the encrypted traffic. firewall dataset: consists of Fortinet FortiGate logs. replay-window 32 flag 20 2.999971 175.*.*. here is the 60c Setup and 100D setup What you need todo is monitor the keylife and when the SA re-neg a new SPI seen if fortinet and OpenSwan matches ( ipsec status and ipsec spi ) Invalid SPI SPI IPsec SA Invalid SPI Recovery Command Refernce Usage Guidelines This command allows you to configure your router so that when an invalid security parameter index error (shown as "Invalid SPI") occurs, an IKE SA is initiated. The following sections are covered: IPsec VPN Log dissecting Example problems Product and Environment Sophos Firewall IPsec VPN type=tunnel The FortiGate must be connected to the Internet in order to automatically connect to the FortiGuard Distribution Network (FDN) to validate the license and download FDN updates. Regards, ah=sha1 key=20 153b47eb5b860f2749ac72d3b5b2bfb21ce7461c set dst-subnet 192.168.2.0 255.255.255.0 ikelifetime=2h Once in a while I'm seeing a "%CRYPTO-4-RECVD_PKT_INV_SPI: decaps: rec'd IPSEC packet has invalid spi" error, even though my VPN connection works well. * is the main Fortigate). 01:50 PM. However when I tried to ping on either side, I got " Invalid SPI" error in the Foriwifi VPN log. src: 0:0.0.0.0/0.0.0.0:0 Created on 1.000096 175.*.*. The Invalid SPF problem appears right after the connection is established. After checking my P2 settings (they were the same on both peers), I just rebooted both units and everything went fine. FortiGate NGFW is the world's most deployed network firewall, delivering unparalleled AI-powered security performance and threat intelligence, along with full visibility and secure networking convergence. To continue this discussion, please ask a new question. Jul 18 00:41:42 localhost pluto[31358]: " twghnet" #5: DPD: received old or duplicate R_U_THERE ====== Solutions by issue type. I have a simple network of a few Cisco routers. set srcaddr "Pats Fortigate 60" leftsubnet=192.168.0.0/24 conn twghnet Resolution Check the AWS Virtual Private Network (AWS VPN) configuration to confirm that it: Meets all customer gateway requirements. Welcome to the Snap! Technical Tip: Difference in ESP and IKE packet handling of local-in policies. nhelpers=0 Bonus Flashback: Back on December 9, 2006, the first-ever Swedish astronaut launched to We have some documents stored on our SharePoint site and we have 1 user that when she clicks on an Excel file, it automatically downloads to her Downloads folder. 02:25 PM, Created on src 116.48.149.137 dst 175.45.62.182 set remotegw-ddns "xxxxxx.fortiddns.com" virtual_private=%v4:192.168.0.0/16 Using DDNS from fortigate. Not applicable For checking specific tunnels by name, use the commanddiagnose vpn tunnel list name : Note that there are two SPIs per IPsec tunnel. This link may help provide some back and hopefully a resolution. natt: mode=none draft=0 interval=0 remote_port=0 INVALID_SPI It is no use to set DPD on. . natt: mode=none draft=0 interval=0 remote_port=0 Copyright 2022 Fortinet, Inc. All Rights Reserved. Flashback: Back on December 9, 1906, Computer Pioneer Grace Hopper Born (Read more HERE.) Jul 18 01:16:13 localhost pluto[31358]: " twghnet" #6: received and ignored informational message stat: rxp=0 txp=0 rxb=0 txb=0 Complete the steps in order to get the chance to win. 1.999981 175.*.*. FWF60C3G12008615 # diag vpn tunnel list 09:27 PM. 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. Jason. in /var/log/secure rightsourceip=192.168.20.1 Phase 1 parameters. dst: 0:0.0.0.0/0.0.0.0:0 Without doing too much much debug, you can just assume that this is some issue in tunnel params/negotiation, and the 2 ends have then renegotiated the tunnel with new params (what you want). This error is related to EAP it seems, try the following in the configuration of your tunnel on the FortiGate: config vpn ipsec phase1-interface edit IPSECVPN (this is the name of your tunnel) set eap enable set eap-identity send-request set authusrgrp 'the group your user is in' next end Make sure your Phase 1 and Phase 2 configs match - EXACTLY - also try turning off NAT-T in the FortiNet device if you can 1 level 2 [deleted] Once again, thanks for your reply! dst: 0:192.168.0.0/255.255.255.0:0 Jason. " Received ESP packet with unknown SPI." 09:36 AM, Created on The problem I have now is that my VPN goes up, but it comes down in about 30 secs, renegotiating, and being up again. Jason. Both Fortigates use different ISPs. Initiator SPI: 15fdb0398dcc1262. Of course I made the same setting in Fortigate. 07-15-2013 For Fortigate Setting. conn %default * -> 116.48.*. Technical Tip: Explanation of 'Unknown SPI' messag Technical Tip: Explanation of 'Unknown SPI' message in Event log. Both should match. Usually, this message indicates that the SAs of the the peers are out of sync, which happens sometimes when the SA ages out and is reestablished. ESP errors are logged with incorrect SPI value. There may be various reasons for why the FortiGate will generate a log message regarding an unknown SPI, but ultimately the root issue is that the FortiGate received an ESP packet whose SPI does not match to any currently-active IPsec tunnel. I would hardcode theopenswan to match the FGT for keylife and ikekeylife or identify what OpenSwan is running for that version and match the FGT. set dstintf "internal_lan" set src-subnet 10.0.0.0 255.255.255.0 Jul 17 23:03:33 localhost pluto[31358]: " twghnet" #5: STATE_MAIN_I4: ISAKMP SA established {auth=OAKLEY_PRESHARED_KEY cipher=oakley_3des_cbc_192 prf=oakley_sha group=modp1536} oe=off I was messing around with the encryption and hashing, when the tunnel fell over. 07-22-2013 set proposal 3des-sha1 I don' t know which one solve my case but anyway, it is solved.. =) protostack=netkey We have a Windows XP computer (don't ask) with network shares that, as of yesterday, are no longer reachable by other computers on the LAN. leftsourceip=192.168.0.1 Jul 18 01:16:10 localhost pluto[31358]: " twghnet" #6: received and ignored informational message does this have to be enabled both ends. The Phase 1 parameters identify the remote peer or clients and supports authentication through preshared keys or digital certificates. next, edit 27 set dstaddr "Pats Fortigate 60" The crypto isakmp invalid-spi-recovery command attempts to address the condition where a router receives IPsec traffic with invalid SPI, and it does not have an IKE SA with that peer. 09-13-2018 . Of course I made the same setting in Fortigate. set action accept Leave Quick Mode Selector blank. 11:46 AM, Created on Thanks everyone . Jul 18 00:41:52 localhost pluto[31358]: " twghnet" #6: transition from state STATE_MAIN_R1 to state STATE_MAIN_R2 clientendpoint dataset: supports Fortinet FortiClient Endpoint Security logs. 07-16-2013 -Another situation is when the VPN gateway 'disappears', such as the FortiGate being rebooted, powered off, or the Ethernet link goes down. set srcintf "wan1" Have resorted to using dialup. set service "ALL" The SPI is provided to map the incoming packet to an SA at the destination. The meaning of the message is that one side of the IPSEC tunnel received a packet with an invalid SPI. I' ve checked my event log and i found this: what do remote/local ports do? fwiw: I would 1st disable pfs to make it simple ( on both devices ) and the run some diagnostic and pcap captures from the linux host. phase 2 This article describes a common VPN Event log seen on the FortiGate that states 'Received ESP packet with unknown SPI'. auto=add A prv VDOM Partitioning se nakonec ukzal jako dvod problmu s IPsec Rekey.. proxyid_num=1 child_num=0 refcnt=8 ilast=1 olast=1 To manually force the SAs to sync, issue the "clear crypto isakmp" and "clear crypto sa" commands. Jul 18 00:41:52 localhost pluto[31358]: " twghnet" #6: transition from state STATE_MAIN_R0 to state STATE_MAIN_R1 proto esp spi 0xe30e8225 reqid 16385 mode tunnel fo a working openswan cfg; Here is the config file in Linux side: Jul 18 00:41:52 localhost pluto[31358]: " twghnet" #6: transition from state STATE_MAIN_R2 to state STATE_MAIN_R3 Jul 18 00:41:47 localhost pluto[31358]: " twghnet" #5: DPD: received old or duplicate R_U_THERE config setup Yeah that was the diag command output I wanted ; set outbound enable This chapter provides detailed step-by-step procedures for configuring a FortiGate unit to accept a connection from a remote peer or dialup client. Jul 18 00:41:52 localhost pluto[31358]: " twghnet" #6: responding to Main Mode Error Description: The tunnel can't be established and the following error is recorded in the event logs in the Dashboard " msg: failed to pre-process ph2 packet (side: 1, status: 1), msg: failed to get sainfo. please ask if anything else needed? Hey guys, I changed my WAN connections: WAN1 to WAN2, and in order make my VPNs work I had to change my policies as well as my VPNs P1 external interfaces. Also the tunnel will go up and down for newer firmware. I changed my WAN connections: WAN1 to WAN2, and in order make my VPNs work I had to change my policies as well as my VPNs P1 external interfaces. 721733. . SA: ref=3 options=0000000d type=00 soft=0 mtu=1280 expire=6982 replaywin=0 seqno=1 The SPI (Security Parameter Index) is used to identify the SA (Security Association) of the packet - which contains the information needed to handle the encrypted traffic. Traffic cannot be sent out through IPsec VPN tunnel because SA is pushed to the wrong NP6 for platforms where NP6 is standalone. Enabling FEC causes BGP neighbors to disconnect after a while. The following are some examples of how this might occur: - The VPN gateway or client performs a re-key for this IPsec tunnel (as defined in the VPN Phase 2 settings), and the other endpoint fails to synchronize with this change for some reason. dec: spi=e30e81f4 esp=3des key=24 2f2005f432d5808a7a769ef4ab75357f6b129e3f086dcef3 Affected models: FG-2000E . As my Linux server set auto=start, in Fortigate please set Remote Gateway to Dialup User instead of Static IP trying to figure routing and remote port setup. https://docs.fortinet.com/document/fortigate/latest/administration-guide/790613/phase-1-configuratio Troubleshooting Tool: Using the FortiOS built-in packet sniffer, 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.. This is my setup for this tutorial: (Yes, public IPv4 addresses behind the Forti.) keyexchange=ike The following Community KB article discusses why it is not possible to drop ESP packets using local-in policies, and why an administrator should expect to see the 'unknown SPI' message in the event that such a packet is received by the FortiGate:Technical Tip: Difference in ESP and IKE packet handling of local-in policies. Pozn. Hi emnoc, Use the following FortiGate CLI commands toproduce live debugs when a re-key occurs: As mentioned above, theactual SPI values for each tunnel are displayed using the diag vpn tunnel list command on the FortiGate. I think my favorite is #5, blocking the mouse sensor - I also like the idea of adding a little picture or note, and it's short and sweet. I' ve checked my event log and i found this: INVALID_SPI " Received . Phase 1 parameters. I' ve found this inside Fortinet' s KB: life: type=01 bytes=0/0 timeout=7153/7200 Nothing else ch Z showed me this article today and I thought it was good. *:0 lgwy=dyn tun=tunnel mode=auto bound_if=1118 On the FortiGate, the SPIs for each VPN tunnel (along with other information) can be found by runningdiagnose vpn tunnel list. To view FDN support contract information, go to System > FortiGuard. Here is more findings: EDIT: I don' t think the SPI is not correct: #Site B Fortigate Reports of the VPN keep showing loads of errors with " 'Quick Mode Received Notification from Peer: invalid spi " It's not every time, so with it being intermittent I have ensured both Sites have the same Encryption settings, and the Phase 1 and Phase 2 timers are definitely set to the same time/interval. Jul 18 00:41:52 localhost pluto[31358]: " twghnet" #6: ignoring informational payload, type IPSEC_INITIAL_CONTACT msgid=00000000 I've had off and on issues with IPSec tunnels using DDNS on Fortigates. AI-POWERED SECURITY Protect your branch, campus, co-location, data center & cloud with features that scale to any environment DEEP VISIBILITY 02:37 PM, Created on check in the blogs and forums and all discussions end in "support engineer solved this" but there is no explanation on how. npu_flag=00 npu_rgwy=175.45.62.182 npu_lgwy=0.0.0.0 npu_selid=c, dec:pkts/bytes=0/0, enc:pkts/bytes=0/0 Pozn. FortiGate sends an invalid configuration to FortiManager, which causes the FortiManager policy packages to have an unknown status. * ESP ESP (SPI=0xe30e81f4) Phase I: * ESP ESP (SPI=0xe30e81f4) If a remote VPN peer is unaware of this disruption, then it may continue to send encrypted IPsec traffic to the FortiGate. set logtraffic all It is no use to set DPD on. natt: mode=none draft=0 interval=0 remote_port=0 we have two XG F/W across a WAN working site-2-site VPN flawlessly for about 4 days, out of the blue one end receives the "received IKE message with invalid SPI (C8A9D1D2) from other side" and the VPN goes down. enc: spi=810a5863 esp=3des key=24 321584d1f8381dec76d0189aef6f861ee052f0682d6a2dbf FortiGate IPSec Phase 1 parameters. # plutodebug=" control parsing" set service "ALL" On some FortiGate units, such as the FortiGate 94D, you cannot ping over the IPsec tunnel without first setting a source-IP. we are using a Fortigate 60D Firmware Version 5.4.4 build 1117 We are running various IPsec Connections from our vpn Gateway to the different Fortigate 60Ds. Jul 18 00:41:52 localhost pluto[31358]: " twghnet" #6: STATE_MAIN_R1: sent MR1, expecting MI2 I would like to know if Fortiwifi 60C is OK to use with a Openswan Linux server by IPSec. 07-24-2013 * ESP ESP (SPI=0xe30e81f4) and set dstaddr "Local LAN" *:0 lgwy=dyn tun=tunnel mode=auto bound_if=5 Does someone have any idea what it could be? ike=3des-sha1 Restoring firmware ("clean install") Appendix A: Port numbers. If you have a active fortinet service plan you can use that to have a tech join and he can walk you through your problems and you can visually see how he does it. version 2.0 # conforms to second version of ipsec.conf specification ah=sha1 key=20 0a429b93bc3e2aaed786588b746de3a79d41f113 Everytime that SPI counts down, a new SPI will be generated and once again your transmit SPI is the other guy receive SPI. edit "HotelToPats_P2" src 175.45.62.182 dst 116.48.149.137 What keylife are you running on Openswan? 12:00 AM : Popis v lnku vychz z FortiGate FG-300E s FortiOS verz 6.2.7.Kter je nakonfigurovan jako FGCP cluster a vyuv VDOM Partitioning (Virtual clustering). No Phase II action is logged/seen in both Fortigate and Linux log. fortimanager dataset: supports Fortinet Manager/Analyzer logs. - edited 1) Go to VPN -> IPSec Tunnels and select the VPN Tunnel to edit. enc cbc(des3_ede) 0x64105d34883f8e02d8b480c44d9725c4f2113fb01cc9bd81 07-18-2013 09:03 AM, Created on rightsubnet=192.168.20.0/24 dst: 0:192.168.0.0/255.255.255.0:0 SA: ref=3 options=0000000d type=00 soft=0 mtu=1280 expire=6815 replaywin=0 seqno=1 here is the diag vpn tunnel list instead. if you use more than 1 authentecation then ipsec fails automatically from 60d! The Forums are a place to find answers on a range of Fortinet products from peers and product experts. Fortigate 60c to 100D IPSEC VPN up but INVALID SPI Error on lost traffic from 60 Posted by albertkeys on Jan 16th, 2015 at 10:03 AM General Networking here is the 60c Setup and 100D setup Link comes up but no message on 60c except on ping when INVALID SPI appears port 500. phase 2 messages appear on 100D and link up. right=219.76.177.121 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. 07-16-2013 07-15-2013 " Error Solution: This can result from mismatched subnets in the IPsec tunnel definitions, typically a mismatched subnet mask. rightnexthop=%defaultroute Notably, these keys are the same on both VPN endpoints, but are flipped in terms of their usage (i.e. I receiving the log "INVALID-SPI" and after this Received ESP packet with unknown SPI. The Forums are a place to find answers on a range of Fortinet products from peers and product experts. name=LOffice ver=1 serial=1 116.*.*.*:0->*.*.*. next. Traffic capture (or IKE debug) shows that when the 3rd party VPN peer sends the IKE "Child SA" packet, the Check Point ClusterXL responds with the "Invalid SPI" packet. I tried to use the Openswan to collect the Fortiwifi, the tunnel is up and everything seems OK. IPsec utilizes two separate encryption keys (one for sending/encryption, the other for receiving/decryption), and so there are also corresponding SPIs used for either matching incoming ESP packets (decryption) or for attaching to outgoing ESP packets (encryption). enc: spi=88081883 esp=3des key=24 e862a4412b8fe4f9e08b6bb01c362f129ffd8b3c71910a70 Is there anything I' m missing? However, can anyone here tell me what this message means: So how invalid it could be.. LOL..! proto esp spi 0x810a5863 reqid 16385 mode tunnel src: 0:192.168.10.0/255.255.255.0:0 compress=no * ESP ESP (SPI=0xe30e81f4) * (which 116.*.*. The SPI number can be checked on the firewall with the following command: show vpn ipsec-sa . pfs=yes 07-22-2013 disablearrivalcheck=yes set srcaddr "Local LAN" 10:33 AM, Created on Fortinet Community Knowledge Base FortiGate Technical Tip: Explanation of 'Unknown SPI' messag. 04:29 AM tethereal -i eth1 -R esp.spi Uses the appropriate IKE version for your use case (AWS supports both IKEv1 and IKEv2). Go to Network -> Select Interface -> Select the interface you want as an WAN port to dial the PPPoE -> Click Edit In Role: Choose WAN In Address: Choose PPPoE In Username and Password: Enter username and password provided by your carrier In Restrict Access: Choose the features allowed on the Interface such as HTTP, HTTPS, This chapter provides detailed step-by-step procedures for configuring a FortiGate unit to accept a connection from a remote peer or dialup client. Jul 18 01:16:10 localhost pluto[31358]: " twghnet" #6: ignoring informational payload, type INVALID_SPI msgid=00000000 set schedule "always" Created on proxyid_num=1 child_num=0 refcnt=7 ilast=3 olast=3 Also the tunnel will go up and down for newer firmware. on the local Peer. This article describes the steps to troubleshoot and explains how to fix the most common IPSec issues that can be encountered while using the Sophos Firewall IPSec VPN (site-to-site) feature. Your daily dose of tech news, in brief. I would have thought you would mapped the left/right subnet in your phase2 cfg. The License Information table shows the status of your FortiGate's support contract. Was there a Microsoft update that caused the issue? Can you post a copy of your vpn phase2-interface cli cmds.? I am using a Fortinet FortiWiFi FWF-61E with FortiOS v6.2.5 build1142 (GA) and a Cisco ASA 5515 with version 9.12 (3)12 and ASDM 7.14 (1). proxyid=KongWahtoLongPing proto=0 sa=0 ref=1 auto_negotiate=0 serial=1 Resetting the configuration. proxyid=TestJason proto=0 sa=1 ref=2 auto_negotiate=0 serial=12 SPI is arbitrary 32-bit value that is used by a receiver to identify the SA to which an incoming packet should be bound. And compare SPIs from the two devices. And yes the relevant FGT ipsec config? # basic configuration * -> 116.48.*. 09-09-2022 10.303062 175.*.*. 3.999999 175.*.*. The Invalid SPF problem appears right after the connection is established. (From a Fortigate to a Cisco ASAv). 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