10-23-2017 The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.. We have a Fortigate 100F on 6.2.3 with the following configuration: We have a Virtual IP (NAT) on the Fortigate to route 172.16.50.10 -> 172.31.160.10. If auxiliary session is enabled, the traffic will egress from an interface based on the . To configure Policy-based Routing on Fortigate, you must know this information: source network/host (incoming interface), destination network/host . It's an outer/perimeter FW installation, one Internet breakout, couple of interface based IPSec VPN terminated. This is a small example on how to configure policy routes (also known as policy-based forwarding or policy-based routing) on a Fortinet firewall, which is really simple at all. Policy Based Routing does not work as expected, fortigate 5.2.11. Copyright 2022 Fortinet, Inc. All Rights Reserved. That traffic is sent to a NetScaler SD-WAN box which is deployed virtually inline. Well it turns out that the scenario I was postulating cannot be provided by a Fortinet appliance. Basically traffic sent by PBR rules is being encapsulated (gets new DST IP, SRC IP is now SD-WAN) and sent it back to same the interface of firewall, but then due to new source and destination IP in new IP header, it simply follows the routing table. Turns out, it was because one of the remote networks being routed to also contained the site to site VPN destination IP. FortiWeb's Static Routes configuration directs outgoing traffic based on packet destination. However, the appliance also has a virtual server with the address 2.2.2.2 that . The FortiGate continues down the policy route list until it reaches the end. Review this document for detailed explanations of different scenarios. So if remote site (2.2.2.2) starts pinging (1.1.1.1) which is the SD-WAN box Public IP, we need NAT rules to translate the destination address to the range (172.14.198.x) which is the local subnet between SD-WAN box and FG firewall. 09-12-2020 The following Policy Route settings fix this asymmetric routing issue by directing outgoing traffic based on the source IP. 09-12-2020 However when I configure it that way, I cannot get the firewall policy the be matched when testing. The system evaluates policy routes, then static routes. That is rather not problematic. However, the appliance also has a virtual server with the address 2.2.2.2 that receives traffic from the ISP2 gateway, which has an IP address of 2.2.2.254. I have a firewall policy in Proxy-Mode that allows traffic from the IPsec tunnel interface to the interface that has 172.31.160.10 with source 172.16.50.0/24 and destination the named VIP. I live in hope that a real engineer will eventually take the ticket and give me an answer based on actual knowledge of the appliances in question. Whenever I do anything on this machine, all the traffic still uses wan1. set dst "172.60.99.0/255.255.255.0" To continue this discussion, please ask a new question. A community for Fortinet users to help each other with products, share best practices and to share feedback directly with the R&D team. The distance must be the same so that both routes are installed in the routing table, but the priority can be set lower on the wan1 circuit so that traffic only hits that unless it hits your policy route. After processing is finished FortiGate forwards the packet towards its destination. Does anyone have an idea of how to set up these policy routes. Also when host from local subnet 172.14.192.0/22 sends ICMP packet to host subnet on remote site 172.60.80.0/24, the packet is by PBR sent to local NetScaler SD-WAN (172.14.198.2). I came across this thread (which is little old) however I thought to add this comment in case it will help anyone reading the thread. However, I can not find the way to instruct the Fortigate to work in a similar manner. Any user ccessing internet from LAN will first check policy based routing if ip matches packet will be send to policy of secondary link as per policy if traffic is 80 and 443 is allowed nd . Well it turns out that the scenario I was postulating cannot be provided by a Fortinet appliance. why do so many support desks operate this way. we can websearch for things just as well as they can ! set gateway 172.14.198.2 In my opinion I can see that Outbound Ping is working because the SD-WAN box is configured properly to handle Outbound Many-to-One NAT (or what is known as PAT). Please could you explain it a bit more? It's an outer/perimeter FW installation, one Internet breakout, couple of interface based IPSec VPN terminated. 07:01 AM. There is one 1:1 NAT rule which translates SRC IP 172.14.198.2 to public routable IP, let's say 1.1.1.1, but that's not that important here. You need a policy Route, which is different than your standard routing. If no routes are found in the routing table, then the policy route does not match the packet. . In addition, the configuration directs any outgoing . Policy-based routing can correct this problem by ensuring that replies to clients use the same interface as the original request. lets invent some imaginary IP ranges to simplify the question . To enable the feature, go to System, and then to Feature Visiblity. The pool members reply contains the destination provided by FortiWeb (4.4.4.4) but not the interface associated with the request. (I say get to v5, because otherwise that will be the first thing they say). Will post back here if I get any results! The Forums are a place to find answers on a range of Fortinet products from peers and product experts. Help shape the future of Fortinet! In addition, the configuration directs any outgoing traffic from the virtual server with an IP address 1.1.1.1 (which receives traffic over the default gateway) to the default gateway: Fixing asymmetric routing problems with policy-based routing. VPN and i place my fortigate on 10.0 planning to route 40.0 to 70.0 using the internet. If necessary, you can have FortiGate provision the IPSec tunnel in policy-based mode. 40.0 -> 10.0 via VPN(fortigate ip is 192.168.10.254) . On the static routing it is not required so I didn't think Policy Routing required it. That part works without any problem. When I set a static route for traffic to 10.100.0.0/16, this policy matches when I do a policy lookup. Routing is static only. This version adds policy route look up support and prioritizes it over static/dynamic (normal) routes when doing route lookup . Created on Created on The distance must be the same so that both routes are installed in the routing table, but the priority can be set lower on the wan1 circuit so that traffic only hits that unless it hits your policy route. If that NAT is configured properly then it should have a corresponding VIP configured on FG to further translate the incoming traffic to other local subnets/hosts, with suitable inbound firewall policies to allow this traffic. Due to order of processing on the device it will always route traffic between 2 directly connected interfaces/VLAN using the policy rules between them. I am uncertain on how exactly to set up the Policy Route, since I think it is actually "return" traffic that would not be able to find its way back to the originating source-IP?I currently have: Incoming Interface: The interface containing IP 172.16.50.10 and 172.31.16.10, Source Address: 172.16.50.0/24 and 172.31.160.0/24 (also tried "all" ), Forward Traffic to Outgoing interface $name_of_ipsec_interface. 10-14-2017 If I start pinging from a remote site it doesnt go through, but if I start ping from local site at the same time, then suddenly, remote ping starts to get replies! 11:03 AM. Created on Is this a bug or I lack some configuration? However unfortunately this does not work it seems. https://kb.fortinet.com/k.do?externalId=FD32103, 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.. Returning traffic is getting back to SD-WAN box the same way, after being decapsulated its sent back to firewall. In this video, I'm going to configure Policy Based Routing, the scenario is the following:All traffic will go out through the main ISP (ISP1), except for SSH. This topic has been locked by an administrator and is no longer open for commenting. When one session is initiated from remote site, traffic does not come through. FortiGate looks for matching firewall policies from top to bottom and if the match is found the traffic is processed based on the firewall policy, if no match is found the traffic is dropped by the Default Implicit Deny firewall policy. . You are trying to accomplish Scenario 5 I believe. Policy-based routing can correct this problem by ensuring that replies to clients use the same interface as the original request. In reverse proxy mode, FortiWeb opens a connection to the server pool member on behalf of the client. I would appreciate any feedback on this before I waste too much time trying to proof of concept this capability. FortiGate Firewall Policy . NetScaler SD-WAN decapsulates that packet and sends it back to local host. Due to order of processing on the device it will always route traffic between 2 directly connected interfaces/VLAN using the policy rules between them. Created on 01:01 AM. If one or both of these are not specified in the policy route, then the FortiGate searches the routing table to find the best active route that corresponds to the policy route. The existing Policy Check and Route Check features in FortiOS 6.0 exclude checking against the Policy Routing engine. Because all incoming traffic for virtual server 2.2.2.2 arrives on the IP2 gateway 2.2.2.254, you configure FortiWeb to route all replies from 2.2.2.2 to that gateway. With auxiliary-session enabled in config system settings: Starting in 6.4.0, the reply traffic will not match any policy routes or SD-WAN rules to determine the egress interface and next hop. For example, if your FortiWeb receives traffic from more than one gateway, it is possible for request and reply packets in the same TCP connection to use different gateways (asymmetric routing), which can break the connection. next set gateway 172.14.198.2 The packets are routed to the first route that matches. 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. Nothing else ch Z showed me this article today and I thought it was good. and on a separate physical interface on the same firewall. if you have any solution please. 10-19-2017 A client request destined for the virtual server 2.2.2.2 arrives from the client with the IP address 4.4.4.4. Created on By default, FortiGate provisions the IPSec tunnel in route-based mode. For example, a FortiWeb has a default static route that forwards traffic for any destination to 1.1.1.254, which is the gateway for ISP1. 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. set input-device "port1" When I remove the Static Route, it does no longer match (as expected). Was there a Microsoft update that caused the issue? I have raised a ticket with Fortinet and am currently working my way through the frustrating 1st/2nd line support that seem to think that sending weblinks is always the answer.. sigh! end, Remote subnets are 172.60.80.0/24 and 172.60.99.0/24, Local NetScaler SD-WAN sits on its own subnet 172.14.198.0/24 with IP address .2, Local interface on firewall connected to internal core switch, port1. FAZ VM So private IP addresses going outbound via the SD-WAN will have the SRC address translated to 1.1.1.1 (if my understanding of the setup is correct). Hi everybody PBR on my Fortgate is not working as expected but rather kind of odd. Traffic from VLAN 1 to VLAN 2 routes via VLAN 3 as gateway and appears to originate from VLAN 3, the ultimate goal here is for client connections from VLAN 1 to all appear to come from VLAN 3 and consume existing policy rules from VLAN3 to VLAN 2 and indeed many other DMZ's withou the need to add many many rules between VLAN1 and all other DMZ's. Mar 21st, 2014 at 6:56 AM check Best Answer. im quite confuse how will it work. i am stuck in the same problem, i have 3 IPs links , i have created 3 default routers to each ISP connections. I often find that I can Google up info better than what they have on hand. e.g SMTP to a mail relay or SNMP to a monitoring network. My vote goes to this being potentially the issue. 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. The policy route table, therefore, need not include a "default route" for packets that do not match your policy because those packets can be forwarded to the default route set in the static route table. When reply traffic enters the FortiGate, and a policy route or SD-WAN rule is configured, the egress interface is chosen as follows. Or it does not until I initiate ping from local to remote host. next 10-15-2017 Review this document for detailed explanations of different scenarios. 10-23-2017 ;) (Compared to my other PBR/PBF tutorials from Juniper ScreenOS and Palo . edit 11 In your case it would be from internal 192.168.16.10/24 to 10.10.64.12/24 over interface DMZ vlan 33 (if i understand your question correctly) You also need a policy to allow your traffic (from internal to dmz) flag Report. Policy based routing & SD-WAN policy based routing. I would update the lab firewall to v5 and then call support with the scenario. Scenario is 2 DMZ/VLAN on the same physical interface. As of FortiOS 5.x, our policy-based routing supports matching the following attributes to determine which output-device to use when starting a session and routing packets . Does that mean that I can get rid of the "services" interface on the Fortigate and add the 172.16.50.1/24 IP on the actual IPsec tunnel interface? Static Route: Manually configured route, when you are configuring static route, you are telling Firewall to see the packet for specific destination range and specific interface. did you try a specific PBR route for your Netscaler ? That part works without any problem. I see that traffic coming back to NetScaler SD-WAN. I believe that possibly due the source and dest VLANS being on the same physical interface that the appliance is recognising this and will always look for policy between the 2 rather than use an alternative route. The following Policy Route settings fix this asymmetric routing issue by directing outgoing traffic based on the source IP. (put it at top level), So packets from Netscaler are not sent anymore to itself, 3 FGT 60E set src "172.14.192.0/255.255.252.0" This topic focuses on FortiGate with a route-based VPN configuration. Flashback: Back on December 9, 1906, Computer Pioneer Grace Hopper Born (Read more HERE.) Its like the appliance simply saying "why would you . you can also create a rule with Netscaler IP and dest. Hi everybody So I would first investigate this Inbound NAT configuration on the SD-WAN box as most likely this is the place of fault. 04-17-2019 The return traffic will not be checked against the policy route. IP => stop policy processing. I have also in routing table a route to 172.60.0.0/16 pointing to IPSec VPN to remote site, but I can't see how it could eventually interfere with more specific routes? It could be an issue with RPF for the traffic originating from the remote site. - wan1 & wan2 are 2 different ISPs on DHCP, and are bundled into SD-WAN- sd-wan serves traffic to home via port 19/20 on a LACP bond. set input-device "port1" The problem is that this works only when the traffic is initiated from the local site where my firewall is. Created on I have a Fortigate 50E (6.0.8) with 2 WAN connections (both DSL unfortunately from the same ISP), I have both connected and PPPoE set on both - both up appearing as connected networks (ppp1 and ppp2) in the routing table, I have 2 static default routes, circuit A (wan1) with distance and priority 10 and circuit B (wan2) with 20, I have a policy route which says incoming interface LAN, source IP of my test PC, destination any, forward traffic out wan2 (circuit B), I have a policy which allows all traffic from this this test PC on the lan to go to the internet using wan2 (this policy is ahead of the policy which allows general lan traffic to the internet through wan1)[/ul]. 03:36 AM, Created on NetScaler SD-WAN encapsulates the packet and the new packet has SRCIP 172.14.198.2 and destination is some public address of another NetScaler SD-WAN box on remote site, let's say 2.2.2.2. I've had a little play about with NAT and PBR in my lab and am currently struggling to get what appears to be a fully working solution. That part works perfectly when communication is initiated from local site. If anyone needs to know the firmware versions on my test firewall its V4 MR3 patch 10 (its just a noddy 50B) and for our production appliances (if it ever gets that far) its V5 GA Patch 4. Only one single configuration page and you're done. config router policy 01:32 PM. I'm pretty new to using Policy Based Routes as we've previously always used static routes.However now we have an IPsec tunnel where the remote network overlaps with another network for which we already have static routes configured. Routing is static only. Returnig packet has DST IP 1.1.1.1 (after NAT 172.14.198.2) and source 2.2.2.2. But when remote host initiates communication and sends first ICMP packet, this packet arrives the local SD-WAN but firewall does NOT send it to local subnet!? Its like the appliance simply saying "why would you even want to go via that interface when the destination is right here" Its by design and cannot be circumvented. You are trying to accomplish Scenario 5 I believe. Policy-based routing initially did not seem to work. Using the Static Route settings only, FortiWeb routes the reply to gateway 1.1.1.254 for all destinations, which does not have the correct state information for the TCP connection. Yes, 1st / 2nd line support is frustrating! The solution was a /32 static route for just the remote firewall's IP, still using the tunnel device (seems weird/wrong), and then a broader policy-based route sending . I did not do that before because I did not see the option for Additional IPs on the IPsec interfaces. However, some environments require you to also use the Policy Route settings to route outgoing traffic based on source IP address, the incoming interface, or both. Copyright 2022 Fortinet, Inc. All Rights Reserved. How to configure policy-based routing in the Fortigate firewallPBR explained with a scenario All the various vdoms are linked to the root vdom, and have no issue communicating via vdom links. I apply a PBR to an incoming internal interface that is configured with a route to 192.168.20./24 via B and then a default route to 0.0.0.0/0.0.0.0 via C. If traffic from the internal interface has a destination of 192.168.10./24 will it use the default 0.0.0.0/0.0.0.0 route in the PBR and send it via C or the static route and send it via A. Policy Routing on a FortiGate Firewall. Is it possible to create rules with features like NAT/PAT and policy based routing (PBR) to achieve the following. I've done the configuration for policy routes to push traffic . set dst "172.60.80.0/255.255.255.0" I've been a bit of a lurker here on spiceworks for some time but now have a question that I cannot find an answer to on the notorious interweb ;). set src "172.14.192.0/255.255.252.0" Not sure I understood what you meant with NetScaler sending packets to itself and how that could help firewall to do its job? 10-25-2017 In 6.2, this is added, and new options are available in the GUI to support further testing scenarios. For example: traffic from the client to the servers enters the FortiGate on either port1 or port2, and a policy route is defined to match traffic that is sent from the servers' subnet to port2. some FAP 210B/221C/223C/321C/421E, Created on Example shown in this slide is default static route which means all subnet (0.0.0.0/0) traffic will go via port 1 by using gateway 10.0.3.1 if no matches found in the . If you don't have a static or dynamic(rip,ospf or bgp) route in the routing table for172.60.80.0/24 &172.60.99.0/24 then the traffic originating from the remote site might be getting dropped because of the anti-spoofing. Do you know how to make this scenario working with Fortigate? Welcome to the Snap! I have FGT300D running firmware 5.2.11. Because all incoming traffic for virtual server 2.2.2.2 arrives on the IP2 gateway 2.2.2.254, you configure FortiWeb to route all replies from 2.2.2.2 to that gateway. The debug flow will show it if RPF is dropping the traffic. 12:31 PM. When such packet comes to firewall it goes out normally following the default route in routing table. Destination IP address in returning traffic is known to firewall and finds its way back to initial source. Configuring Policy-based Routing on Fortigate Login t o Fort igat e under an administ rat ive account Click Router on t he lef t side menu, select Policy Routing On t he t op of t he right pane, click Create New . In addition I have couple of PBR rules that route traffic sourcing from specific subnet to another specific route to an interface. PBR on my Fortgate is not working as expected but rather kind of odd. Computers can ping it but cannot connect to it. I need to replace that static route with a policy route, however, due to a conflicting IP range. Policy based routing is not applicable and only works where traffic matching particular criteria needs to go via a specific gateway or server outside of the appliance. That packet arrives to firewall with DST IP in subnet 172.14.192.0/22 and SRC IP from remote subnet 172.60.80.0/24. For example, a FortiWeb has a default static route that forwards traffic for any destination to 1.1.1.254, which is the gateway for ISP1. edit 10 I'm trying to get policy routing working in which case traffic from one device will always use a specific wan circuit while all other traffic uses the other wan circuit but it doesn't seem to work. So I'm trying to make a policy route to ensure that only traffic from certain interfaces goes over the IPsec tunnel. Moreover, I need t o conf igure an ent ry wit hin Policy-based rout ing t o specif ically redirect Of f ice net work t o use DSL line. In. I have FGT300D running firmware 5.2.11. The Forums are a place to find answers on a range of Fortinet products from peers and product experts. 03:40 AM. and created 2 policy routers 1st one PBR for ISP1 for VPN traffic and 2nd one PBR for Certain Vlans users and working but 3rd PBR one single vlan is not working. 03:24 AM, The cli cmd diag debug flow is your best friend in this issue, 2: I would review the output especially any lines that says routes or policy or lookup, Created on 10:45 PM. However, we need to check the SD-WAN box for Inbound NAT. 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