Browse By Tags

  • Blocking Communication on the Same Network Unless Specified

    Hi, I just have a quick question surrounding communication on within the same network. I know that between different networks I have to define rules to allow communication e.g. if i want to RDP between VLAN 101 (10.10.1.1) and 102 (10.10.2.1) which…
  • How to let group of users/computers access blocked sites?

    Hi! We use UTM 9 Sophos. I just wanted to ask how we can configure it to let a group of users to bypass website blocking / all the blocking? Thanks!
  • Sophos Endpoint Firewall ne peux pas démarrer après l'installation Windows 10

    Bonjour, Depuis la bascule vers Windows 10, mon Sophos Endpoint Security & Control m'affiche que le firewall est désactivé. Quand j'essaye de le démarrer à la main, il s'interrompt après qqs secondes Et pareil coté vues de services windows Et…
  • SIP Trunk kann Verbindung nicht immer aufbauen

    Guten Tag zusammen, ich muss leider etwas ausholen, damit der Sachverhalt verständlich wird: Gegeben ist eine UTM9 mit Firmware 9.506-2, 4x VDSL Uplink (statische IPs + Load-Balancing) und 1x Fritzbox mit externem SIP-Trunk. Konkret passiert folgendes…
  • What does a firewall actually block?

    I am writing an article about securing servers within a LAN, and the importance of installing a firewall. I found myself wondering though what it is that a firewall actually blocks. I get that they obviously block connections to ports, but if there is…
  • Deploying Sophos Central agents behind firewalls without Web or Application Awareness

    We recently commenced the migration of a customer from Sophos Enterprise Console to Sophos Central, and encountered some challenges that slowed down the initial deployment. Our customer has a reasonably well secured environment, and has both a good…
  • Sophos Client AV Blocking all connection of workstations

    today morning several users report can't login systems and apps, after we discover the allow all traffic option in Sophos firewall tab in client side removed automatically. then we put the traffic allow tick again, then the all blocking process stopped…
  • GoToMyPC file transfers are very slow

    GoToMyPC file transfers with the Sophos firewall have slowed down substantially. The file is 165 Mb and I am trying to transfer the file from the remote PC (download) I can transfer to my home computer with a Netgear firewall in about 15 minutes …
  • Outbound Port 80 dropped

    Hi, Not quite sure why these packets are being dropped by the firewall, can anyone shed some light? Firewall Rule (Internal Network is 192.168.55.0/24, Web Surfing contains HTTP / HTTPS / HTTP PROXY / HTTP CACHE): Web Filter Rule (this rule…
  • Purpose behind .plx processes

    Hello, I am looking for documentation that tells me what each .plx function I see in Sophos UTM log files does. I want to valdiate which .plx functions change the firewall config. Some function names are more self explanatory than others. For example…
  • No Network Drive, Nor Network Printer Access

    Hello, Since I installed Sophos (Endpoint Security and Control) I have lost access to my network drives and network printers. When i go to "Configure Firewall" and check "Allow all Traffic" they both come back to normal operation. So, apparently Sophos…
  • Display public IP in DMZ

    Hi, I'm a newbe. So thanks for your patience. We are a school. We have an Internet connection with 5 public IPs (xx.xx.xx.202 to 206 - same gateway). We are using UTM 9 as our firewall. Our main network gets DHCP from a Windows box (192.168.x…
  • Cannot connect App Store if ipad/iphone with IOS 11 via Sophos SG310 firewall

    Hi, We are using Sophos SG310 firewall. Users reported that their IPAD/IPhone cannot connect to App Store when using our company Wifi connection. I found that those device are running IOS 11 and it can be fixed temporary by connecting a mobile hotspot…
  • Home group and Sophos Endpoint Firewall struggle

    Hello, When i try to create a home group in Windows 10 with default settings of Sophos Firewall, Windows 10 pops up me a message that home group cannot be done. While, if i let all connections to pass the firewall, i can setup a home group. Which…
  • inbound HTTP & HTTPS

    i am having trouble setting up the firewall on my UTM to allow HTTP and HTTPS traffic to a webserver the firewall logs show the packets are dropped 09:20:08 Default DROP TCP 31.105.130.108 : 35999 → …
  • DNAT Rule for SMTP Traffic

    Evening All, Slight bit of a noob with the Sophos UTM so please bare with me, as i could be doing something completely backwards. So I have a Sophos SG550 UTM 9 Device, and i'm wanting to pass traffic through from Symantec messagelabs to my Internal…
  • Required email notification if user try to access block website.

    Hi, I am looking a feature in Cyberoam Sophos CR25iNG Model that admin should receive an notification on registered email id, if a user try to access block website. Either user is using any kind of proxy software/website or try to access in block state…
  • ATP triggers for botnet but scans show nothing on server

    Since not quite the first of the month, we've had a very interesting and chronic trigger on our firewall... I have been continually running different malware/antivirus scans on the server and resetting to see if I have cleared off the problem, but…
  • Can ping from UTM, but not from host to host in VLAN

    I recently setup VLAN 2 within our network have everything pointing to the UTM for routing. I can ping the switches on the VLAN 2, but can't ping the host of the VLAN 2 from the VLAN 1. However, I can ping the host of VLAN 2 from the firewall. I've…
  • L2TP IPSEC Clients can connect to the internal network but not to the internet

    Hey everyone, I thoroughly followed the guide https://www.sophos.com/en-us/medialibrary/PDFs/documentation/utm90_Remote_Access_Via_L2TP_geng.pdf with my test setup of a SOPHOS UTM 9 essentials firewall edition. I managed to get my client connecting…
  • Single Exchange-server on the inside, need help opening for external clients and OWA

    I recently had to setup our Sophos UTM from scratch. I cannot for some reason get Exchange 2013 up and running again. Its working fine on the inside and mail is routed correctly from the outside, however I cannot open for Outlook Anywhere and OWA. …
  • 3CX external clients trying to connect 3CX hosted in Cloud

    Hi, We've got a 3CX Server hosted in the cloud. On our internal network we have a 3CX SBC setup on a Raspberry Pi and we are using 3cx client on Windows laptops. We also have two older phones that cannot use the 3CX SBC, so they have to connect directly…
  • Problem with Country blocking after 9.5

    Hi, After update to 9.503-4 (from some 9.4 version), we have found that Country blocking is dropping packets from IP 82.119.228.254 (Slovakia). But we have this feature turned off for Slovakia . It seems that there is problem with just this one IP…
  • External VOIP Phones connecting back to Office - No Audio

    Morning All! Just installed a new Panasonic NS700 phone system at the Office. It's working perfectly here onsite but I have a handset at home that is connecting to the external IP I have setup for the PABX, downloading all its settings etc I can log in…
  • Firewall blocking DNS queries out to the Internet from internal server

    Greetings, I have an internal DNS server - 172.16.0.200 (a defined host within the UTM) I have a firewall rule setup to allow that host -> DNS -> Any The UTM is running in bridge mode, behind another firewall. It's dropping the DNS traffic at…