• Sophos DNS host entry fail

    djb-sophos
    djb-sophos
    We have a public wildcard DNS record configured (*.domain.com) so if someone puts in asdf.domain.com, it will still go to our main website www.domain.com. On the Sophos firewall, I have set up many DNS host entries in Network --> DNS, with the idea…
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • 2 DNS, but only use 1 for phonesystem

    TVV
    TVV
    Hi, I have two WANs connected on my Sophos XG SFOS 18.5.1. The DNS is configured with " Obtain DNS from PPPoE". My Problem now is, that my PhoneSystem is using DNS from the Sophos. But it may only use the DNS from WAN2 and not from WAN1. How…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • High Memory Usage on XG Virtual - possibly related with dns server

    Halino
    Halino
    Hi, i configured some clients in the network to start using the XG as dns server on saturday mid-day. After this you can see the memory usage ramping up, is possible that there is a memory leak? Fw is on SFVH (SFOS 18.5.1 MR-1-Build326)
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Request: Dynamic DNS Custom

    Fermin
    Fermin
    HI, Since myfirewall.co stops working, I would appreciate if you can add the ability to add a custom option. If you cannot add that option, I would appreciate if you can add the entry for my provider joker.com/.../what-is-dynamic-dns-dyndns.html Th…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • DNS Troubleshooting

    Super CM
    Super CM
    I am running the latest XG release and am finding that sometimes DNS resolution is stopping. The Firewall is responsible for DNS requests. The problem tends to go away on its own by just waiting or I can force it by restarting the DNS service. Any suggestions…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Constant DNS lookups to google domains and others in FQDN hosts - FIX

    splarksop
    splarksop
    I found a few similar questions from different people over the years as to why their XG makes constant DNS lookups to huge amounts of domains with none of the posts having a useful answer. Unfortunately all those threads were locked due to age so I've…
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Sophos XG - Redirect internal DNS traffic to different WAN interface

    Philipp N.
    Philipp N.
    Hello, I have a XG with two interfaces in WAN zone (because I need a gateway for both) in a data center housing scenario. Let's call the interfaces WAN-int and WAN-ext. WAN-ext has a public IP-address and WAN-int has a private IP-address. …
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • how to add dns to sophos xgs firewall

    Sophos User1175
    Sophos User1175
    hi all, on the sophos xgs firewall on the diagnostics i can ping 8.8.8.8 but i cant ping google.co.uk under "network > dns" i have added a few dns ips in there but when i go back to diagnostics ping, i type in google.co.uk, ipv4, select my wan interface…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • DNS server behind XG firewall NAT

    Youcef Rahmouni
    Youcef Rahmouni
    Hello community, Recently i was asked to migrate an existint configuration from a router to XG firewall and here is the scenario : an application running in my local server with the name : transmission.local.co IP@ is 192.168.62.11 DNS serve r…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Can DNS Spoofing be detected

    Manish Chawda
    Manish Chawda
    Hi, Can DNS Spoofing be detected.
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Sophos XG making a significant amount of DNS queries to www.google.com.*

    shred
    shred
    I recently added Pi-hole as the DNS server for Sophos XG itself, and I’ve noticed in my Pi-hole logs that Sophos XG is making a significant amount of DNS queries to various google.x addresses, such as google.de, google.com.pr, google.to, google.com.af…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Sophos xg can't resolve own hostname and internal server

    initB10r
    initB10r
    Hello all, I am currently trying to configure Sophos xg to replace my Fritzbox. From problems with certificates, I have become aware that my DNS resolution for internal hosts and the xg itself is not working. Currently I have only a test client, which…
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • New install XG86w having dns issues

    Matthew Cioffi1
    Matthew Cioffi1
    Wr have a brand new XG86w that we are connecting to Comcast. The comcast modem is in basic bridge mode. The problem is that about every 10 minutes DNS fails. We cannot ping anything from the firewall. I have tried comcast default DNS, Google DNS and OpenDNS…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Block DNS resolution between VLANs

    Pur Ity
    Pur Ity
    I'm looking to use the built-in DHCP and DNS server on the Sophos XG on my "Main VLAN" but I don't want other VLANs to be able to do any nslookups for the host entrys. Today VLAN1 has it's own DHCP and DNS server and the other VLANs uses the Sophos…
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • DNS dos not resolved

    Pounraj C
    Pounraj C
    we hosted the server on IIS in the internal network and I assigned a domain name like app.example.com but the problem is while trying to access from outside the network using domain name(app.example.com) the website has not loading but while trying…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • {dnscache} dnsd keeps restarting

    KSesock
    KSesock
    Running XG 18.0 MR5-Build586 on a pair of SG230's in HA (Active-Passive). We use the XG as a local cache and DNS relay, since we rely on AD DNS hosted in our AWS Virtual Private Cloud. We have DNS request routing setup so that only internal domains are…
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Sophos XG v18 - DMZ challenges

    Daniel Bruss
    Daniel Bruss
    As a quick background, I have been working with firewalls for about 15 years (Cisco PIX, Cisco ASA, and recently SonicWall TZ and NSa). I have been working on and off with Sophos XGs for about 2 years now so I am familiar with them but they are definitely…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Problems connecting to internal app server from SSL and IPSEC VPN using Sophos connect

    Sophos User406
    Sophos User406
    I am using XG210 (SFOS 18.0.5 MR-5-Build586) and Sophos Connect 2.1.20. SSL VPN and IPSEC VPN for Remote Access is configured as "use as default gateway" forcing all remote traffic through the XG. Remote users are able to access LAN resources, that…
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Internal DNS servers, Zone DNS option and rules

    Jens Greiner
    Jens Greiner
    Sophos XG106 (SFOS 18.0.5 MR-5-Build586) I have set up several own DNS servers and added them to XG DNS settings. XG DHCP service provides those DNS servers to our clients. Clients are separated in different zones, all with their own WAN rule and…
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Routing Site-to-Site VPN Traffic on same Domain Computers

    Kyle Hesser
    Kyle Hesser
    Currently, I have a Site-to-Site VPN, with split tunnels to specific IP's and networks, setup on both Sophos firewalls and they are working fine. BIGGEST THING TO REMEMBER , the branch office needs to have their computers on our internal Domain. The…
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • block all internet DNS services except 3

    joefirewall
    joefirewall
    Hello, We want our lan users to not be able to change their dns settings on their computers or browsers to use other dns services available on the web. We want to only allow access to these two dns servers : 208.67.222.222 and 208.67.220.220 (these…
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • The Sophos XG135 is not returning any DNS name resolution if we don’t “reconnect” the RJ45 cable.

    Samuel Venker
    Samuel Venker
    Hello ! Can someone support me in a “weird” issue please ? Problem : The Sophos XG135 is not returning any DNS name resolution if we don’t “reconnect” the RJ45 cable. When any PC on Windows 10 boots, they cannot access the DNS server which is our…
    • Answered
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • Ping from VLAN only with FQDN

    Bastian Seidemann
    Bastian Seidemann
    Hello Community, i have a problem. on my xg i have 2 Networks: 1. 172.20.10.x (Default LAN) 2. 172.20.8.x (VLAN8) Both have his own DNS Server: 172.20.10.x --> DHCP with DNS 172.20.10.1 172.20.8.x --> DHCP with DNS 172.20.8.1 i added all…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • WAN Failover does not work on XG - DNS?

    Dave Hayes
    Dave Hayes
    Hello...We have an XG firewall configured with (2) WAN interfaces. The primary is a cable connection from COX. We have a second one configured as a Backup in the WAN link manager that is pointing to a CradlePoint router with a Cellular SIM installed.…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
  • DNS Issues

    Nathan Bolen
    Nathan Bolen
    Hello, I have a user who is utilizing the Sophos XG 86w firewall for a home office. They way it is set up has her home internet split to allow her work network as well as her home network. She connects to the networks via wireless. So she has an SSID…
    • over 3 years ago
    • Sophos Firewall
    • Discussions
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