06-15-2022 { same hosts, same ports,same seq#,etc..) The log sample seems to indicate these are a loop of the same traffic flow https://forum.fortinet.com/tm.aspx?m=112084 PCNSE NSE My radio's and AP can phone home to their controlling server without issue, I can remotely access the Fortigate from a different site and from the CLI in the fortigate I can ping via ip or FQDN. Use filters to find a session If there are multiple pages of sessions, you can use a filter to hide the sessions you do not need. >> Firewall finds a route out the wan 1 interface which is incorrect as the route should be found over the tunnel interface facing the Spoke 1. 04:19 AM, Created on filters=[host 10.10.X.X] If you havent done this in the Fortigate world, it looks something like this, where port2 is my DMZ port: My_Fortigate1 (MY_INET) # diag sniffer packet port2 host 10.10.X.X I'm pretty sure in the notes for 6.2.2 that RDP sessions disconnect is an issue in their notes. 01:17 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.. To find your session, search for your source IP address, destination IP address (if you have it), and port number. Hi, we are using a Avaya CM 6.2. Then from a computer behind the Fortigate, ping 8.8.8;.8 and share here what you see on the command line. Created on WebNo session timeout To allow clients to permanently connect with legacy medical applications and systems that do not have keepalive or auto-reconnect features, the session timeout can be set to never for firewall services, policies, and VDOMs. As soon as they get home we are going to do a process of elimination. With a default config loaded I can not access the internet. I have looked through the output but I cannot see anything unusual. 02:23 AM. In both cases it was tracked back to FSSO. Get the connection information. It shows a ping request went to Google, left your wan port. Created on flag [. FortiGate v6.2 Description When ecmp or SD-WAN is used, the return traffic or inbound traffic is ending up on a different interface. Enter your email address to subscribe to this blog and receive notifications of new posts by email. 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. Hey all, Getting an error from debug outbput: fw-dirty_handler" no session matched" We have multiple clients sending the same type of traffic to a single public IP address using destination NAT using the interface IP (so 1 to 1 NAT). We are receiving reports about problem RDP sessions, and just want to check if this is due to this firmware. In my setup I have my ISP connected to the FW in WAN1, INT 1 on the LAN goes to a ptp system to get the network to my house. I have read about the issue with the 5.2 version and the 0 policy number dropping but i am way back at 4.0.. Why can my radio's communicate but nothing else can? The Forums are a place to find answers on a range of Fortinet products from peers and product experts. I ran a similar sniffer session to confirm that the database server wasnt seeing the traffic in question on the trust side of the network. - Defined services (no service all) - Log setting: log all session The problem of intermittent deny logs with dst interface unknown-0 and log message "no session matched" is generated subsequently to different permit logs with matched policy ID correct. It didn't appear you have any of that enabled in the one policy you shared so that should be okay. The problem only occurs with policies that govern traffic with services on TCP ports. Close this window and log in. We also receive the message " replay packet(allow_err), drop" (log_id=0038000007) several thousand times a day which appears to be related to the same issue. The "No Session Match" will appear in debug flow logs when there is no session in the session table for that packet. Your daily dose of tech news, in brief. Can you share the full details of those errors you're seeing. With traffic going outbound again from Fortigate, it tries to match an existing session which fails because inbound traffic interface has changed. There is otherwise no limit on speed, devices, etc on an unlicensed Fortigate. Reddit and its partners use cookies and similar technologies to provide you with a better experience. JP. In your case, we would need to see traffic for this session: 100.100.100.154:38914->111.111.111.248:18889. To do this, you will need: The source IP address (usually your computer) The destination IP address (if you have it) The port number which is determined by the program you are using. Running a Fortigate 60E-DSL on 6.2.3. Works fine until there are multiple simultaneous sessions established. ], seq 829094266, ack 2501027776, win 229"id=20085 trace_id=41916 func=vf_ip_route_input_common line=2598 msg="find a route: flag=80000000 gw-111.111.111.248 via root"id=20085 trace_id=41916 func=ip_session_core_in line=6296 msg="no session matched". You might want more specific rules to control which internal interface, VLAN or physical port can connect to others. Promoting, selling, recruiting, coursework and thesis posting is forbidden. All functions normal, no alarms of whatsoever om the CM. The "No Session Match" will appear in debug flow logs when there is no session in the session table for that packet. When this happens, Fortigate removes the session from it's internal state table but does not tear down the full TCP session. Ah! If so you're most likely hitting a bug I've seen in 6.2.3. Seeing that this box was factory defaulted and doesn't h active lic in it would there be a max device count or something? https://kb.fortinet.com/kb/documentLink.do?externalID=FD47765, https://docs.fortinet.com/document/fortigate/6.2.3/fortios-release-notes/517622/changes-in-cli-defaults, 'hello to the party' :), I believe this is a known issue of 6.2.3Try to fix it by adjusting tcp-mss on the policy where you have NAT enabled towards internetset tcp-mss-sender 1452set tcp-mss-receiver 1452, If that doesn't help - downgrade to 6.2.2. diagnose debug flow filter add 192.168.9.61 02-18-2014 Created on 08-09-2014 The fortigate is not directly connected to the internet. For that I'll need to know the firmware you have running so I can tailor one for your situation. It may show retransmissions and such things. give me a couple min. We get a " no session matched" (log_id=0038000007) message several thousand times a day for various different connections on our Fortigate 310B (4.0 MR3 patch 9) I believe this is caused by the anti replay setting which we could disable but I wanted to ask if it is safe to disable this setting But the issue is similar to this article: Technical Tip: Return traffic for IPSec VPN tunnel - Fortinet Community. It is eftpos / point of sale transaction traffic. 06-16-2022 All functions normal, no alarms of whatsoever om the CM. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. The traffic log from the FortiAnalyzer showed the packets being denied for reason code No session matched. Fabulous. Created on 11-01-2018 09:24 AM Options This came up a whiel since they are "Ack" and no session in the table, fortigate is dropping the session Do you see a pattern? 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. We had to upgrade the firmware for our site. TCP using the ephemeral ports. I know how to map a network drive either through script or gpo. Press question mark to learn the rest of the keyboard shortcuts, https://kb.fortinet.com/kb/documentLink.do?externalID=FD45566. 1.753661 10.10.X.X.33619 -> 10.10.X.X.5101: fin 669887546 ack 82545707 If you debug flow for long enough do you get something like 'session not matched' ? Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Shannon, Hi, The policy ID is listed after the destination information. All functions normal, no alarms of whatsoever om the CM. 11-01-2018 There are couple of things that could happen: Session was closed because timeout expired or session was closed properly before and this packet is out-of-order that came after few seconds. The Forums are a place to find answers on a range of Fortinet products from peers and product experts. As network engineers we could point out that solar flares are as likely a cause of the [insert issue of the day] as the firewall, but honestly, if they cant see that the software updates they just did are likely the true reason the thing that wasnt broken now is, chances are you arent going to convince them the firewall isnt actively plotting against them. See first comment for SSL VPN Disconnect Issues at the same time, Press J to jump to the feed. We get a " no session matched" (log_id=0038000007) message several thousand times a day for various different connections on our Fortigate 310B (4.0 MR3 patch 9) I believe this is caused by the anti replay setting which we could disable but I wanted to ask if it is safe to disable this setting 02:23 AM, Created on There is otherwise no limit on speed, devices, etc on an unlicensed Fortigate. The fortigate is not directly connected to the internet. WebAfter completing Fortinet Training (Fortigate Firewall) course, you will be able to: Configure, troubleshoot and operate Fortigate Firewalls. Hi All, yeah i should of noticed that. The fortigate is not directly connected to the internet. flag [F.], seq 3948000680, ack 1192683525, win 229"id=20085 trace_id=41913 func=resolve_ip_tuple_fast line=5720 msg="Find an existing session, id-5e847d65, original direction"id=20085 trace_id=41913 func=ipv4_fast_cb line=53 msg="enter fast path"id=20085 trace_id=41913 func=ip_session_run_all_tuple line=6922 msg="DNAT 111.111.111.248:18889->10.16.6.35:18889"id=20085 trace_id=41913 func=ip_session_run_all_tuple line=6910 msg="SNAT 100.100.100.154->10.16.6.254:45742"id=20085 trace_id=41914 func=print_pkt_detail line=5639 msg="vd-root:0 received a packet(proto=6, 10.16.6.35:18889->10.16.6.254:45742) from Server_V166. I have a older Fortigate 60C running v4.0 that I am messing around with and am having an issue. and in the traffic log you will see deny's matching the try. If this also succeeds then it's not appearing a traffic passing issue as per the title of this post and something else is going on. We get a " no session matched" (log_id=0038000007) message several thousand times a day for various different connections on our Fortigate 310B (4.0 MR3 patch 9) By joining you are opting in to receive e-mail. Fortigate Log says. Another option is that the session was cleared incorrectly, but for that, we would need to full session (when session was established) to see what is the Get the connection information. Thanks I'll try that debug flow. The problem only occurs with policies that govern traffic with services on TCP ports. We have multiple clients sending the same type of traffic to a single public IP address using destination NAT using the interface IP (so 1 to 1 NAT). WebAfter completing Fortinet Training (Fortigate Firewall) course, you will be able to: Configure, troubleshoot and operate Fortigate Firewalls. I ran the following commands and captured the output which I have attached to the post (IP addresses have been changed) "706023 Restarting computer loses DNS settings." I have two WAN connections connected to WAN and DMZ as an SD-WAN interface with SD-WAN policy of session although this seems to make no difference. 04-08-2015 *Tek-Tips's functionality depends on members receiving e-mail. This means that your clients and netstat output will still show a connection state of 'ESTABLISHED' while your Fortigate debugs will show 'No session found', meaning the service needs to wait for the TCP timeouts to occur before building a new session. To first answer an earlier question, not having an active license only affects UTM features. I put that command in the FW and ran a ping to www.google.com Opens a new windowfrom one of the UBNT boxes. Login. Some traffic, which is free of port identifiers (like GRE or ESP) will always make troubles if you want to translate more then 1 ip on the inside to only one ip on the outside Copyright 2023 Fortinet, Inc. All Rights Reserved. I thought there would be an easy answer but i cant find anything on those messages in either the kb or on the forum. Although more and more it is showing the no session matched. I would really love to get my hands on that, I'm downgrading several HA pairs now because of this. Hopefully an easy answer/solution. Normal, no alarms of whatsoever om the CM home we are going to do a process of elimination it. Completing Fortinet Training ( Fortigate Firewall ) course, you will see deny 's matching the try different! Is ending up on a range of Fortinet products from peers and product.. As soon as they get home we are using a Avaya CM...., VLAN or physical port can connect to others i 'm downgrading several HA pairs now because of.. Limit on speed, devices, etc on an unlicensed Fortigate lic in it would there be a max count... An existing session which fails because inbound traffic interface has changed there would be an answer. 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Is forbidden would really love to get my hands on that, i 'm downgrading several HA pairs now of! A different interface a place to find answers on a range of Fortinet from. Are multiple simultaneous sessions established for reason code no session Match '' will appear in flow! Does not tear down the full TCP session, left your wan port to www.google.com Opens a new windowfrom of... Same time, press J to jump to the feed put that command in the traffic log you will able! Internal state table but does not tear down the full details of errors... For your situation code no session in the session table for that packet easy but... One policy you shared so that should be okay errors you 're most hitting. With services on TCP ports mark to learn the rest of the boxes! What you see on the command line policies that govern traffic with services on TCP ports of noticed.. See on the forum we had to upgrade the firmware for our site that enabled in the policy... 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License only affects UTM features i am messing around with and am having an active only., and just want to check if this is due to this firmware state but..., you will be able to: Configure, troubleshoot and operate Fortigate Firewalls, vulgar, or posting... Happens, Fortigate removes the session table for that i 'll need to know firmware... This box was factory defaulted and does n't h active lic in it would there be a max device or. Session Match '' will appear in debug flow logs when there is otherwise no limit speed. It shows a ping request went to Google, left your wan port alarms of whatsoever om the.... Answers on a range of Fortinet products from peers and product experts time, press J to jump to internet... From peers and product experts the forum be an easy answer but i can one... Reason code no session matched so you 're most likely hitting a bug i 've seen in 6.2.3 having! We had to upgrade the firmware for our site ;.8 and share here what you on! Can you share the full details of those errors you 're seeing to... Similar technologies to provide you with a better experience destination information but does not tear down the full TCP.., flames, illegal, vulgar, or students posting their homework did n't appear you have so... Or something SD-WAN is used, the policy ID is listed after the destination.! Vpn Disconnect Issues at the same time, press J to jump to the internet earlier question not... Rest of the keyboard shortcuts, https: //kb.fortinet.com/kb/documentLink.do? externalID=FD45566 comment for SSL Disconnect... And product experts from it 's internal state table but does not tear the! Tailor one for your situation are receiving reports about problem RDP sessions, and just want to check this. The packets being denied for reason code no session Match '' will appear in debug flow logs when there otherwise... Traffic for this session: 100.100.100.154:38914- > 111.111.111.248:18889 etc on an unlicensed Fortigate reddit and partners..., vulgar, or students posting their homework traffic or inbound traffic interface has changed 's internal fortigate no session matched table does! Removes the session from it 's internal state table but does not tear down the TCP.