• DNS / Name Resolution Timeouts on Clients

    Greg Grotsky
    Greg Grotsky
    I have a home network and I'm using the Sopohs XG Firewall to try to secure my home network. It works very well, but I've noticed something fairly annoying for the past several months. When I navigate to a web page after turning on my PC, it takes a while…
    • Answered
    • over 6 years ago
    • Sophos Firewall
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  • XG DNS best practices with AD/DNS environment

    VikenNajarian
    VikenNajarian
    Hello, I have read some KB and threads about DNS best practices for XG in an AD/DNS environment but they don't say all the same things... In the most of the environment I manage for my custommers, there are AD/DNS servers and XG, actually the XG don…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • 2 ISP WAN and DNS configure

    sindbad
    sindbad
    Hi all, I configured a second WAN today. It looks good. Now I have two ISP’s. If WAN1 goes down. WAN2 will take over. Thats what I wanted. Now I do have an external domain registrar. For example hostgator.com. I have my external IP of my WAN1 in…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • How to fix an Internet Lost Connection

    Miguel Cruz
    Miguel Cruz
    Hi, good day to everybody. I need some help to fix this problem: i have a router that bring internet and network service to my sophos firewall xg, this firewall has DHCP relay to the main router. The router has bandwidht manager and load balancing…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • DNS - Static Entires nslookup funktioniert aber ping nicht

    Jiyon
    Jiyon
    Hallo Zusammen, vielleicht könnt ihr mir helfen. Wir haben uns Sophos UTM-9 Model: SG135 angeschafft. Nun haben wir soweit alles konfiguriert. Im Betrieb nutzen wir überwiegend Linux als OS. Wir haben keinen WINS, AD oder DNS Server. Aber wir haben…
    • Answered
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • XG Blocking DNS Lookup - DNS Request Timeout Error

    Leebtish
    Leebtish
    Hi all, I recently tried to point our DNS servers to our XG230 but when I run an nslookup I'm receiving the error "dns request timed out. timeout was 2 seconds". Our setup is pretty simple. We have 2 x Windows 2012 DNS servers. Each server points…
    • Answered
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • UTM9 - VPN - Namensauflösung

    StefanLoeser
    StefanLoeser
    Hallo, zwischen unserer Domäne und dem Modem sitzt eine Sophos UTM9. Seit einer Woche versuche ich das VPN so aufzubauen, daß ich mit einem iPhone von außen per Fernzugriff auf einen Filemaker-Server in der Domäne zugreifen kann. Den Datenbankzugriff…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • DNS Host Entries over L2TP VPN

    CloudReader
    CloudReader
    Hello, I've added a small number of static DNS host entries to a XG125w and they work within the local LAN. However, the hosts do not resolve when a user remotely connects through VPN (L2TP). Any idea of how to resolve this? I found this similar…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • Server-Lastverteilung

    Jonte E
    Jonte E
    Ich habe zwei Exchange 2013 Email Server intern. Nun möchte ich, dass alle Anfragen die von Intern kommen, auf diese zwei Server aufgeteilt werden. Dafür muss ich die Server Lastverteilung einrichten und einen DNS Eintrag in der Sophos UTM erstellen.…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • How to setup DNS so local DNS resolves.

    christopher gilles
    christopher gilles
    Hello community, I'm a bit confused as to how to go about settings up DNS/DHCP so that I can resolve local addresses such as myserver.local I'm just wondering if there is a simple guide anyone can point me to, or give me a quick rundown, I'd much…
    • Answered
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • DNS - Problem accessing any link

    Tiago Toledo
    Tiago Toledo
    Problem accessing any link. When accessing the link appears DNS error message, when pressing F5 the page is updated and loads the site. Has anyone had this problem? Any idea what might be causing it? Images...
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • Safari seld signed certificate error : cannot connect to web gui

    SimoneMontagnani
    SimoneMontagnani
    Hi all, I have an XG310 Cluster with firmware 16.5 and a big problem with my safari. After a fresh new installation of MacOS High Sierra, suddenly Safari won't connect to XG web gui console https://192.168.x.y:4444/ It's a self signed certificate…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • How to refresh DNS on XG Firewall?

    Miguel Cruz
    Miguel Cruz
    HI, good day. If i change the WAN Link, with another ISP, is there a way to refresh the dns? for example in Windows i could do something like ipconfig /flushdns or even renew the IP, but, in this Firewall, how could i do this without restart the device…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • Problem with DNS when external Load Balanced change the WAN (ISP) service.

    Miguel Cruz
    Miguel Cruz
    HI, Good Day. I have a TL-ER5120 v2.0 (firmware 1.0.8 Build 20140212 Rel.36037) that gives DHCP and Internet to my Sophos XG Firewall (SFVH - C010018P2GDHJ37, firmware SFOS 17.0.3 MR-3), Im attaching some pictures. With my main router (the Tp-Link…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • Internal Domain Resolutions using SSL VPN from non-domain devices

    Andrew Cioppa
    Andrew Cioppa
    Hi, I am a new person to the Sophos XG environment, but I am having a perplexing issue that I can't figure out for the life of me. When non domain devices are connecting via the SSL VPN, they are unable to resolve any server by DNS name. When…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • A few suggestions

    MrMuishond
    MrMuishond
    After a couple of years using XG I have a few suggestions. Sorry about the formatting apparently CR’s don’t work for me. 1) sign your ISO’s and other files with gpg. Seriously. Now. You’re a security company giving people unverifiable downloads (or occasionally…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • Hidden rules and data leaking in XG

    MrMuishond
    MrMuishond
    On the subject of the XG firewall ‘leaking’, it’s worth mentioning DNS. XG doesn’t seem too bothered about DNS, can someone confirm if I’m correct with this scenario? If you have DNS turned on for a zone, you’re essentially allowing unmonitored 2 way…
    • over 6 years ago
    • Sophos Firewall
    • Discussions
  • VPN IPSec Tunnel between Fortigate and Sophos XG with DDNS

    Doudou Sine
    Doudou Sine
    Hello everyone, I need help for a Projet I am working on: We need to setup a VPN Tunnel between 2 sites, let's say HQ and Branch. HQ has a Fortigate 80D with a Static IP, Branch has a Sophos XG (Cyberoam Cr25iNG upgrade) with dynamic IP. I have…
    • over 7 years ago
    • Sophos Firewall
    • Discussions
  • How to setup VPN DNS to resolve in independent LANs?

    Dean Hammond
    Dean Hammond
    I have two deliberately independent LANs each with their own address space, DHCP and DNS servers. It all works, each LAN can contact the WAN but not the other LAN. SSL VPN is set up so that Users are assigned to one of two Groups: LAN-A or LAN-B, and…
    • over 7 years ago
    • Sophos Firewall
    • Discussions
  • XG DNS suggestions needed!

    RobinAshton
    RobinAshton
    With our XG we periodically get ATP reports that our DC/DNS servers are part of a botnet (C2/Generic)... Now it seems obvious that this is perhaps not strictly the case and that other devices on the network are making DNS lookups to known bad places through…
    • Answered
    • over 7 years ago
    • Sophos Firewall
    • Discussions
  • Flush DNS Cache on XG Firewall

    Micha Schweizer
    Micha Schweizer
    Dear all, is there an easy way to flush the DNS cache on a XG Firewall? Thanks in advance! Best Regards Micha
    • over 7 years ago
    • Sophos Firewall
    • Discussions
  • Office 365: DNS-Routing

    Alexander Busch
    Alexander Busch
    Wenn man die DNS Auflösung, wie hier im Forum Best Practice oder auch nach KB 120283 aufsetzt und z. B. Google DNS als Forwarder nutzt ergibt sich ein Problem mit Office 365. Perfekt dargestellt hier: Ich wollte einfach mal Meinungen und Erfahrungen…
    • over 7 years ago
    • Sophos Firewall
    • Discussions
  • Firewall Regeln greifen nicht richtig

    Nicolaas Burleigh
    Nicolaas Burleigh
    Hallo, ich habe aktuell ein Windows Server als Internen DNS der die Anfragen an einen externen DNS (z.B. Google 8.8.8.8) weiterleitet. Bis gestern Abend hat das auch alles perfekt funktioniert. Aber seit dieser Nacht werden alle anfragen die der Interne…
    • over 7 years ago
    • Sophos Firewall
    • Discussions
  • Problem - Doppelte DNS Einträge für Sophos VPN Clients im DC

    Dave V
    Dave V
    Hallo zusammen! Ich hoffe ihr könnt mir helfen. Folgendes Szenario: Wir haben eine UTM9 (SG430) im Einsatz. Wenn ein Client sich per VPN verbindet, kriegt er eine 192.168.175.X Adresse vom DHCP der UTM. Dieser DNS Eintrag registriert sich…
    • over 7 years ago
    • Sophos Firewall
    • Discussions
  • DNS best practices with AD in Azure

    Geoff Granger
    Geoff Granger
    Looking for a little help on improving DNS queries for external web addresses. Current setup: - VPN tunnel to AD server in Azure (This has been semi stable) - DHCP coming from Sophos XG - Primary DNS is set to AD - Second DNS set to XG - XG…
    • over 7 years ago
    • Sophos Firewall
    • Discussions
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