Mikrotik ipsec tunnel not passing traffic. Please help with identifying the cause of this malfunction. So when you try access from internet from IP, lets say 17. Definitely needed. The ping test should be also successful from srv1 and srv2 in Cloud to dev1 and dev2 at HQ as well. The IPsec policy has the local and remote networks defined, the proposal is set such that it’s a match to the remote end, the peer has the remote IP as I suspect this was due to recent updates on both sides. i have a problem in OS7 i have ipsec site to site with fortigate tunnel is up phase one and phase2 , when i ping from fgt network to mikrotik network it works while when i ping from mikrotik network it goes through wan and get [admin@MikroTik] > ping 192. Now, we want a. To make things more complicated my LAN clients are natted twice and I am wondering if this could cause some issues. 90. Hardware: both sides hAp Mini Default config is WISP AP went through Mikrotik wiki on how to setup ipsec VPN. Did you I am at my witts end here. When combined with IPSec, it Hi, I am trying to get an IPSec tunnel working between my home and datacenter. 2 resolved the issue. > /ip ipsec Do you have Fasttrack enabled? If so, read this article: https://saputra. myLocalNet = my LAN network myTargetNet = the network I gain access to over the tunnel /ip ipsec peer add address IPSEC tunnel established, traffic not passing through Quote #1 Sun Mar 16, 2025 1:03 am Hello all, Hello all, I am trying to put in place a VPN tunnel initiated by my Mikrotik router and have the traffic from one single host forced through that tunnel. According to the Green check next to peer IP on the VPN Console, VPN is up, but all pings are timed out. Both routers are running RouterOS 7. z). 17 SEQ HOST SIZE TTL TIME STATUS 0 xxx. But! After moving router to a new site, traffic in both directions stopped going through the tunnel, Mikrotik shows 0 packets. 41 here is the latest config attempt, and i still cannot get it to pass traffic: R1 Trying to pass traffic across the connection results in nothing more than timeouts (again, no log messages even with IPSec debug messages being logged). I have set up the IPSec tunnel but nothing seems to happen. I went trough some existing posts here on the forum, but none of the solutions actually worked for me. 0/24 internal IP range successfully running few (2) other IPSec tunnels Tunnel was 1 Try ping ip address in ipip tunnel on asa from mikrotik. Click Apply Changes Next, add a rule to pass traffic inside the WireGuard tunnel on both firewalls: Navigate to Firewall > Rules Click the tab for the assigned WireGuard interface (e. 89. Problem #1 is typically caused by not excluding the traffic initiated from the Mikrotik side from getting src-nated. I cannot pass traffic from either side. 112. One of them is behind the provider’s router/NAT. Subnet on router 1 is… I've set up a VPN between my mikrotik router and Google Cloud Platform VPN. 5 Site A: RB333 behind several NATs initiator of IPSec communication 192. If I ping one of the IPs that should be reachable over the tunnel I ge… It could work without mode-config if the responder (“server”) was a device that allows you to configure all the aspects of the IPsec connection. Hi there, I have successfully setup an ipsec tunnel over the Internet, and the PH2 State is established, but no traffic is flowing over the tunnel. I managed to stablish phase 2, but I see no traffic on the tunnel. Hello, I have setup an ipsec connection between my mikrotik router (RB951Ui-2HnD - 6. After Are EoIP tunnels over the internet commonly flaky? What is the best (proper) way to troubleshoot this type of problem? Again I’m fairly new the MikroTik world. 18. However, from time to time, none of the four SIP re-registration attempts sent within 4 seconds passes through. 0/24. IPsec policies matching is the very last thing to be done as the packet is just about to be sent out using the interface chosen by regular routing, so after even an eventual src-nat operation took place. But i am unable to ping host pcs connected. NAT——INTERNET—–Mikrotik2—–Office2 Mikrotik1 is the initiator of the IPSEC tunnel. Mar 15, 2025 · I am trying to put in place a VPN tunnel initiated by my Mikrotik router and have the traffic from one single host forced through that tunnel. 1/24, gre over ipsec tunnel ip: 192. Please can you help me what am I missing? Thank you Router 2 /ip ipsec> export # nov/27/2020 13:49:56 by … how to handle a scenario where the IPsec Tunnel is up and traffic seems to be leaving FortiGate but is not reaching the remote end. I have no idea what this rule was doing and why it was not Hello, I have ipsec vpn established between a cisco router and a mikrotik router. 45. If IPSec get up and ipip work it success. y and x. Site A has a MikroTik 952Ui-5ac2nD using LAN subnet 192. Hello all, I am trying to put in place a VPN tunnel initiated by my Mikrotik router and have the traffic from one single host forced through that tunnel. Sep 6, 2024 · I have the tunnel connected correctly, at least I think so, because the connection between them has the status "Established". I am getting the session established, but not able to pass traffic… Equipment on both sides is a Mikrotik hAP Mini both running 6. Just one of the directions stop passing data. 15. Office1——Mikrotik1 (bridge)——-Prov. It applies also to traffic originating from the router. So, long story short, here it is: I’ve set up a plain IPsec-Tunnel to one of my customers (= remote side) and it is working fine, as long as the Mikrotik (local side) is the initiator of that connection - traffic flows through this connection in both directions. I have done Firewall Nat and no luck. Hello, i have 2 offices. Nothing appears on under ‘Remote Peers’ or ‘Installed SAs’ on either side. 0/24 internal IP range Site B: RB2011UiAS-2HnD behind 1:1 NAT responder of IPSec communication 192. 49 84 55 18ms459us TTL exceeded 1 xxx. Both sites have dynamically-assigned public IP addresses through PPPoE from my ISP. VPN_SATELLITE or VPN_HQ) Click Add to add a new rule to the top of the list Use the following settings: Action: Pass Protocol: Any Source: any Destination: any hello I have an IPsec tunnel set between a Sophos XG and a mikrotik connection is established but no data is passing Both devices have public ips firewall rules set on both devices but still nothing Sophos engineers… The EoIP tunnel may run over IPIP tunnel, PPTP tunnel, or any other connection capable of transporting IP. I suspect this was due to recent updates on both sides. Here is an article I used to fix this part: IPsec Fasttrack Rules. Just an experienced guess: Problem #1 is typically caused by not excluding the traffic initiated from the Mikrotik side from getting src-nated. VPNHub is a RB1000 and peers use 450G. This article ap Hello, I’ve been using Mikrotik’s IPSec for VPN’s for a long time with almost no problems. I have two mikrotiks setup as office routers. conf). I have enabled IPsec logging on one side and nothing appears:- [admin-sy@scorpio] > / system logging print Flags: X - disabled, I - invalid, * - default # TOPICS ACTION Hi everybody, I have set up an IPsec site-to-site tunnel between two sites. Router. 38. As you may know, each tunnel creates two SA’s: one from VPNHub to peer and another from peer to VPNHub. Mikrotik1 has its IPv4 in the same subnet of Office1 and is in bridge mode (transparent firewall). It doesn’t matter whether IPsec creates a virtual interface or not; the thing is that the traffic to be delivered using IPsec is encapsulated into the ESP packets, and ESP packets are only sent when there is any payload to be transported. 2. Kindly assist First time setting up VPN with MikroTik. We also have a local network that’s natted through a. 8 - you would have to look that up. Both routers have been reset without default config. Both sites have a DDNS name. If someone on Router2's network initiates a ping, or any traffic, going TO Router1's network, then people (doesn't matter who) can also initiate stuff from Router1's network going TO Router2's network. On both sides Mikrotik and ASA. I am attempting to setup an IPSEC vpn between them that that both offices can see the other network. The IPsec policy has the local and remote networks defined, the proposal is set such that it’s a match to the remote end, the peer has the remote IP as As you have posted only part of the configuration, it is not really clear whether the Mikrotik itself uses IPSec policies to catch plaintext traffic and encrypt it or whether the problem is transit of IPsec transport traffic between two other devices through that Mikrotik. Only ips allowed are these on phase 2. c. The IPsec seems to be connected fine: /ip ipsec remote-peers print shows established on both routers; /ip ipsec installed-sa print shows an SA for each direction. I have set up the IPsec and I don’t get the traffic passing. I have previously made the IPsec connection but from another device. 18 to establish an IPsec site-to-site VPN connection with site B (on x. 10. For example, remote desktop was working just fine, copying files through remote desktop was also fine, although the speed was not very satisfying (only 3Mbit/s, router cpu on 30% while copying), Both routers are the same: 2011UiAS-2HnD. session is established, phase 2 completes and states session established. Since it is a blackbox, you have to adjust the configuration of the Mikrotik acting as initiator to its expectations. I have the tunnel established, so I am fairly confident I have that set up but am having issues getting traffic to route across the tunnel at either end. IPSEC tunnel established, traffic not passing through Quote #1 Sun Mar 16, 2025 1:03 am Hello all, Hi everybody, I have set up an IPsec site-to-site tunnel between two sites. While the tunnel establishes… Hi everybody, I have set up an IPsec site-to-site tunnel between two sites. 8) and a vps running strongswan. I've made this simple test enviroment and set the two router as follow but although the ipsec tunnel is up no traffi… a) sa=0 indicates there is mismatch between selectors or no traffic is being initiated b) sa=1 indicates IPsec SA is matching and there is traffic between the selectors c) sa=2 is only visible during IPsec SA rekey Maybe that helps. So, we have an IPsec tunnel established between two Mikrotik routers. Includes IPSec proposals, firewall rules, selective routing, and security best practices. Good day. When the bridging function of the router is enabled, all Ethernet traffic (all Ethernet protocols) will be bridged just as if there where a physical Ethernet interface and cable between the two routers (with bridging enabled). org/mikrotik-fasttrack-with-ipsec/ want to route some internet traffic through vpn, from local site to remote site router (R2) R1: LOCAL site (750Gr3): LAN / 172. e. 49 84 55 17ms51us TTL exceeded 2 Hello, I have ipsec vpn established between a cisco router and a mikrotik router. ” Hi there, I have successfully setup an ipsec tunnel over the Internet, and the PH2 State is established, but no traffic is flowing over the tunnel. Having an issue with a VPN tunnel between a MikroTik router (1100AHx2) and a Cisco ASA. We’ve used a. 0/24 (site B), any traffic from WAN will NOT pass thru IPSEC. Hello everybody, I’m trying to test ipsec in gns3 but I cannot get traffic passing trough tunnel. An IPsec “policy” is a combination of a “traffic selector” (matching rules for traffic to be chosen for delivery via the hello I have an IPsec tunnel set between a Sophos XG and a mikrotik connection is established but no data is passing Both devices have public ips firewall rules set on both devices but still nothing Sophos engineers… IPSEC tunnel established, traffic not passing through Quote #1 Sun Mar 16, 2025 1:03 am Hello all, IPsec on Mikrotik works in the policy mode which means that a router will catch "interesting traffic" and send it trough the tunnel. I am using an intersite IPsec tunnel between ROS, after configuration it worked flawlessly. So if you allow the source We have a /29 IP block (6 public IPs). b. Hello all. The only way to get the tunnel to start passing traffic again is to kill the connections and flush the SAs (both must be done before it will work). Here is configs from each side: Router 1: /ip ipsec proposal set [ find default=yes ] enc Troubleshooting a MikroTik VPN configuration can be frustrating if you do not know where to look. PH2 shows established, so I assume the tunnel is good. theirIP = their Internet IP. Bun my Linux Acording to documentation, if you configure level “use” in a policy: use - skip this transform, do not drop the packet, and do not acquire SA from IKE daemon As to my understanding, if no SA exists for the particular traffic because the tunnel is down at that moment, traffic should be routed according to the FIB. 16. By now, you should be able to ping the servers in cloud from dev1 and dev2 PCs at HQ site. Hello all, I have a trouble to pass traffic through IPSec tunnel between two sides. 0/24 (site A) and 10. Also, for some reason I think I've read something about a known issue in 7. 14 and your tunnel only accepts traffic between, i. My PH2 Total shows 1, and the state shows “established” The downside of this application is that I can’t debug the chekcpoint router, so I It seems that RouterOS has a bug with IPsec. I had a rule saying this: ;;; defconf: drop all from WAN not DSTNATed chain=forward action=drop connection-state=new connection-nat-state=!dstnat in-interface-list=ETH1_and_PPPoE log=no log-prefix=“” Removing it and configuring step-by-step from the beginning it started working. Both routers were reset to default configuration, then I followed the guide from the official MikroTik documentation for the IPsec site-to-site tunnel. So, it stopped passing by http/https traffic. The problem is that I can't ping between them at all via the private IP, via the public one, of course, without a problem. Build routing inside VPN. 168. huh, after playing for some time it started working. What is the reason that connection between PC behind CCR2004 and server behind Cisco never goes above 50Mbps? There's an IPsec tunnel established between them, and it works, half way. Attached is the snapshot of the routes in the mikrotik. Both routers were reset to default configuration, then I followed the guide from the official MikroTik documentation for the IPsec site-to-site… Phase 2 on IPsec tunnels are “allowed” networks on the tunnel. The trouble is, every how-to I’ve read gets to this point and says “That’s it! Traffic should pass through the link now. Any direction would be appreciated. Both routers were reset to default configuration, then I followed the guide from the official MikroTik documentation for the IPsec site-to-site…. You don’t know what the responder is actually doing, so if it assigns the initiator an address but the initiator is sending from another one using your manually configured policy, the firewall on the responder may drop that traffic. GRE tunnels offer a simple yet powerful solution for securely transmitting data across untrusted networks. That does not answer what the policy looks like when the tunnel is “up”. But the errors in the IPsec counters suggest that something else is wrong. I’ve made this simple test enviroment and set the two router as follow but although the ipsec tunnel is up no traffic… Hello, anyone any idea? site2site IPsec tunnel over internet, firewall filter rules used at both ends so connection tracking is not disabled for tunnelled traffic, exceptions from src-nat are made, exceptions from fasttracking are made, everything works almost all the time. 3 days ago · Configure L2TP/IPSec VPN on Mikrotik routers for secure connectivity. Session established on first try. At the same time, the tunnel itself works stably. Apparently having fasttrack enabled causes issues with IPsec tunnels and you either must disable it or have these rules ignore the IPsec traffic. 0/24 and Site B has a the same router using LAN subnet 192. 2rc4. I have set up an IPsec site-to-site tunnel between two sites. Below are RouterOS configuration areas that relate to L2TP over IPSec. You don't need any NAT to connect inside VPN. Feb 10, 2026 · Since there is no route to the destination that matches the dst-address of your IPsec policy, the packets cannot be routed, and therefore also cannot be matched against the policy. 8. 1/24 R2: Remote site (CHR, Hey guys, let’s dive into setting up an IPsec tunnel on your MikroTik router! This is super important for securing your network traffic when connecting different sites or allowing remote access. To make things more complicated my LAN clients are natted twice a… Having an issue with a VPN tunnel between a MikroTik router (1100AHx2) and a Cisco ASA. myIP = my Internet IP. 0. 1. For sometime now my tunnels stop passing traffic, with no data flowing in one of the SA’s of the tunnel. If I ping one of the IPs that should be reachable over the tunnel I get a timeout. Both sides running latest RouterOS 6. 19 assigned to a dedicated private server to reach site B through the established VPN tunnel all configured on our Mikrotik 951 router. 10. It’s not the case in my environment and, if certain tunnel is down, traffic Hi there! We are running site-to-site ipsec between CCR2004 and Cisco routers. I Hello everybody, I'm trying to test ipsec in gns3 but I cannot get traffic passing trough tunnel. Kindly assist I am trying to configure an IPsec tunnel from my computer to a virtual machine on a server using strongswan (by swanctl. Both routers are the same, and I followed the guide from the official MikroTik documentation for the IPsec site-to-site tunnel. My VPN was working until I updated to version 7. Apr 24, 2021 · Your solution is correct, the reasons are slightly different. This article is specifically about troubleshooting L2TP over IPSec Remote Access VPNs on RouterOS. I looked in the log on the routers and all seemed “normal” and it said it was UP, but traffic just wasn’t passing. Downgrading to 7. In the new Routerboards that use the latest firmware there is a new Firewall Filter rule known as "fasttrack". Make desired firewall rules to filter traffic inside vpn, if You want this. g. When i created Hello, I’ve set an ipsec tunnel between a Miktrotik an a checkpoint firewall. 40. x. From my windows i can ping across the tunnel the office2. To make things more complicated my LAN clients are natted twice a… Configuring MikroTik RouterOS GRE Tunnel Over IPSec - Making Sense of the Infinite In this guide, we’ll walk you through the process of configuring a GRE (Generic Routing Encapsulation) tunnel over IPSec (Internet Protocol Security) on MikroTik RouterOS. Based on the above output, the IPsec tunnel is up and running. 17. fddrsn, z9uz, snodr, kksns, nqos, wgqun, 2w4vfo, rpbpn, ofda0l, wd9i,