Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

  • IPSEC connection showing this error Couldn't authenticate the local gateway. Check the authentication settings on both devices.

    We are trying to setup a IPSEC tunnel between a Sophos Firewall and a ISR4300 After activating its showing error Couldn't authenticate the local gateway. Check the authentication settings on both devices.
  • WIFI "separate zone" didn't work over IPSec

    Hi all, AP configuration works. I am able to remove & add the AP's. AP's are recognized and shown as active. I can see the traffic between AP & XGS Port 2712. Traffic to port 8472 from firewall to AP is not answered, but i see packets from AP to APIPA…
  • Firewall IPsec Site2Site settings page slowdown

    Hi all, when we try to add or change a configuration on the IPsec settings page on our XG/XGS Firewalls we always have to wait for about 2 minutes for the site to load and for it to be usable. The web browser shows the message "This page is slowing…
  • Disconnection Ipsec with fritz

    After update to my xg firewall to v20 ipsec is become unstable. Randomly disconnection. openvpn client work without issue only ipsec have problem Some info: this setup worked for 2 year without a problem (another bug on v19 but fixed). Sophos firewall…
  • Remote IPSEC VPN Disconnections

    Hello Sophos Community, Is there any documentation or procedure to troubleshoot end user disconnection from our remote access IPsec VPN? I have been looking on how to look at the firewall logs but I couldn't finds anything usefull.
  • IKEv1 PSK with same Gateways

    Hello @all, it is known that with IKEv1 on SFOS a new PSK overwrites all others PSKs if the gateways do not differ in the connections. Sadly I can not use IKEv2. Is it sufficient if just the local ID is different in connections and the remote ID is ANY…
  • IPSEC down/up e-mail notification every 30 minutes

    Good morning. I have several XG/XGS of different clients configured with IPSEC against the same central, this central uses a CISCO firewall (we do not manage it). The problem we have is that every 30 minutes we receive an email from all the XG/XGS indicating…
  • Multiple Gateways in Branch Office

    Hi, What is the proper way to connect a branch having multiple internet gateways but the head office has only one gateway? The branch office WAN1 interface has a Real IP but WAN2 uses DDNS with a dynamic IP. Should the branch office have a failover…
  • Yellow Icon under IPSec Status

    Hi, One of my IPsec tunnels shows a yellow icon under the status but when I click on the connection details, all subnet connections show green. Any Suggestions?
  • Site-to-Site VPNs and VLANS

    Hi, We've run a flat lan for years at our main location. We've recently updated our network and added a few new VLANS to the mix. Now I have a problem. We have several Site-to-Site VPNs up and running that work great with our original VLAN1. However…
  • IPSec site to site vpn, one tunnel goes down frequently

    Hi, I have a Sophos XGS107 (SFOS 20.0.1 MR-1-Build342) setup with Site to Site vpn to a Mikrotik router. There is 4 vpn tunnels (or separate address pairs), It mostly works fine, but every other day one tunnel goes down. If I check in webgui >> site…
  • SD WAN config between CGW and AWS EC2 Virtual FW

    Hi all, we currently have 20 sites all using Sophos XG107 or XG 117 FW. all sites have a S2S VPN connection into AWS for SMB access. issue we have is failover internet, if failover is required then our VPN drops due to new IP. Failover internet is…
  • IPSec Recommended Settings for Branch Office

    Hi, Are there any specific IPSec Profile recommendations for connecting the branch office that does not have a static real IP Address? I am currently using the DefaultBranchOffice profile, but it disconnects automatically after some time. Thanks.
  • Add subnets to NAT with policy-based IPsec when local and remote subnets are the same

    Hello all, I have a situation with a IPsec VPN setup between two sites that have subnets that are the same. I followed these instructions and it worked ok; NAT with route-based IPsec when local and remote subnets are the same - Sophos Firewall However…
  • IPSEC/L2TP with Radius and CVE-2024-3596

    Hello, with the patch from Microsoft KB5040434 07/2024 there are problems with Radius authentication for L2TP. Without the patch, the client connection works without any problems. What can we do? Best Regards Dieter
  • Site to site VPN to a vendor site with the same subnet at both ends

    Hello all, we are looking at a situation where we need to set up a site to site VPN to a vendor who is using a Fortigate gateway, and the same subnet is being used at both ends. I have reviewed the below link which covers this situation for Sophos to…
  • XFRM showing 'not configured' after public IP changes on spoke

    Hello, we are currently using Sophos Firewalls in a Hub-and-Spoke topology running SFOS 20.0. Some spokes are using WAN connections with dynamic IPs which will change from time to time. On those units we can observe that the corresponding XFRM interface…
  • Sophos XGS IPESEC to Fortinet Firewall

    Hello, We are having problems establishing an IPSEC tunnel between an XGS and a Fortigate firewall. Currently we receive the message “IKE SA proposals don't match. Check the phase 1 policy settings on both devices: IKE:AES_CBC_256/HMAC_MD5_96/PRF_HMAC_MD5…
  • Disable IPSEC Anti Replay Protection SFOS v20

    Hello, Im trying to test out Cloudflare magicwan and the guide says to disable ipsec anti replay protection. The guide shows a command for sfos v19 however this doesn't seem to exist in v20. The command is: set vpn ipsec-performance-setting anti…
  • Sophos XGS IPSEC PSK and remote ID issue

    Hello, we have set up several Policy Based IPSEc tunnels. These have different remote gateways, but some of them have the same remote IDs. Some connections crash after a certain time. Could this be due to the PSK in conjunction with the remote ID? As…
  • Trouble routing a packet from site A via site B to site C (with SNAT)

    I have something strange for the following situation. VPN connection between site A and site B (tried both policy-based and route-based) and a policy-based VPN-connection between site B and site C. Intention is to reach site C from site A while there…
  • User Authentication over S2S IPSec VPN

    We have currently have two locations, each with a XG330 v19.5.4 MR4 and an EPL fiber connection between them that has a S2S IPSec tunnel setup and a static route on both ends pointing to the other. Each FW is setup with the local DC for user authentication…
  • Site2Site IPSec VPN with both endpoints only IPv6

    Hello, I want to setup a S2S IPsec VPN between our Head office and Branch Office. The branch office has only IPv6. I have setup on btoh side the S2S VPN, but i cant get it to connect. And i even dont see any connection trys in the logs. For all other…
  • IPSEC Failover for LAN Gateway

    I don't know if this is the right configuration so bear with me. I have a connection that essentially functions as a direct ethernet line back to the main office, called an EPLAN. It is set up in my Branch Office in the LAN zone. Everything works OK…
  • Sophos Connect 2.3 MR1 iPSec DNS problems but SSL OK

    Hi there, After the firmware update to SFOS 20.0.1 MR-1-Build342, we have rolled out the Sophos Connect Client v2.3.1. It turns out that DNS resolution does not work with IPsec. It looks like the wrong DNS servers are being entered here (ipv6). With SSL…