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  • Can't connect Shelly to Homeassistant through different Sophos UTM VLANs

    Hey everyone, i have a problem here which turns out to be my final boss. What am I planning to do? I run two Sophos UTM firewalls at home, a UTM 320 which manages the LAN and an SG115 which manages the WLAN. I switched to VLAN operation, before…
  • C2/Generic-A - UTM DNS attack

    Hello, For a few days we have been receiving disturbing mail notifications from our UTM sophos. I hope you can help me to identify and maybe solve the problem. For security reasons, I replaced the public IP of our Sophos UTM. The notification provides…
  • Sophos UTM as Backend Firewall Design

    Hello, i use Sophos UTM Home since years now, and im really happy with it:) But as the Sophos UTM is still missing the Open VPN Client possibility, and DNSCrypt DOH is also not possible, i was thinking to add an other FW as Fronted Firewall to configure…
  • DNS log files

    Hello, I'm a beginner on Sophos UTM and I'm wondering where is the DNS log file where I can find all the logs regarding the requests that have been done between my Firewall Sophos and the DNS server. Thank you, Antonin
  • UTM9 (9.510-5) - Single device (iPhone 5S) cannot resolve IP / DNS (all other devices do) of internet device

    Hi, I'm struggling to find the reason why a single device (iPhone 5S) cannot resolve DNS when all other devices on the (home) LAN can. Background Running UTM 9.510-5 The pre-existing LAN has some 14 devices (NAS, Windows 10, AppleTV, iPad, iPhone…
  • QoS change = broken internet

    Hi. Hope I'm posting in the correct group.. I'm trying to change the up and down speed of the external NICs QoS rule. When I make the change, I have no internet connection. Turning the QoS of for that interface has the same effect. Looking at the firewall…
  • Not all IPs are resolved to DNS names in logs?

    I've set up reverse DNS for our network, and Sophos (being the primary DNS) has the correct forwarding to our network DC (which holds the reverse records). Now most of the time the UTM logs (be it actual logs, information in the flow monitor or the…
  • Why my UTM does not resolve AWS ELB or example names (google.com)

    Hello I have a UTM but when wanting to do a Network object, it does not solve the Balancers (AWS ELB) and it does not solve the names like google.com, etc, making the requests in support tools I throw a ping and it does not solve the error of (The ping…
  • DNS Routing for Internal Hosts

    Hello, We have 3 RED networks (working in split mode) which include multiple windows hosts. The users RDP into those windows hosts. Everything works however, we want to be able to assign hostnames to our hosts so that users don't have to remember the…
  • Random websites stop loading - DNS ??

    I've been fighting an issue for months where random websites stop loading with ERR_CONNECTION_ABORTED or ERR_CONNECTION_RESET When this occurs, all other sites function fine. I've turned off almost every feature on the UTM9 without resolution. My…
  • DNS issue after UTM reboot

    Hello, I experience some issues with Sophos UTM 9 after a reboot. I am connecting to ISP via pppoe , if the system rebooted I do not have a connection to internet even if the pppoe interface is showing to be up. If i reconnect the interface everything…
  • Creating a DMZ

    Hey Guys I have done the following to create a DMZ for a network that I administer. The method of setting it up like this, is keeping the following in mind: # Internal and External networks being able to access the DMZ via special ports # Hosts…
  • UTM appliance and DNS requests

    Hi, I'm having some oddities with a UTM appliance that's on the most recent version of software. At random, clients will act like they're being blocked from DNS access. I've tried using another DNS server, tried using my internal server, nothing works…
  • How to add a network definition DNS host for a hostname which domain has already existing host definitions in UTM DNS?

    I have a domain, say mydomain.com . I have configured a static host for fw. mydomain.com to 192.168.1.1 in the UTM DNS. How can I configure another host which is a part of the same domain, say bastion2. mydomain.com as a DNS host, telling UTM to look…
  • How can I find out how many and what are the devices IPs currently connected to LAN

    Under Wireless Protection I Can click at Wireless Clients to see what clients are connected to the WiFi. Can I do the same for LAN devices? I do have DHCP enabled on the UTM.
  • RE: UTM network service architecture documentation

    The reason I am asking is that there is an internet firewall in front of the UTM in my setup and I wanted to avoid having to reverse engineer the filter rules needed on the outer firewall. It seems that the default (factory set) network protection rules…
  • UTM network service architecture documentation

    Can somebody please point me to a documentation of the UTM network service architecure? What I am looking for is a description of the interaction of the UTM appliance, the Endpoint agents and the internet services provided by Sophos (e.g. broker) especially…
  • RE: UTM 9.3 Dynamic DNS Service - Need Help with Configurations and Any Caveats

    Maria Nalivayko: I was able to update the IP address for '@' in browser by following the guide provided in this article https://www.namecheap.com/support/knowledgebase/article.aspx/29/11/how-do-i-use-the-browser-to-dynamically-update-hosts-ip Maria…
  • DNS resolution failure from UTM

    I'm getting DNS failures on my UTM that are wreaking havoc with all systems. Sample DNS logs: 2016:01:11-00:00:08 ravenna named[4507]: error (network unreachable) resolving 'passthrough6.fw-notify.net/A/IN': 199.85.127.10#53 2016:01:11-00:00:08…
  • DNS Configuration question

    I recently had an issue with my workstations not being able to get online. The problem was that they could not find the DNS server. I called my ISP (Charter), and they reset everything. The end result is that if I use my old router (Linksys) everything…