• DHCPv6 Relay configuration allows only interface, however, unicast is needed for multi-hop setup

    To whom it may concern, I have been fighting with DHCPv6 addresses in an UTM2UTM network for quite some time now. DHCPv6 relay works great in the datacenter locations, but never worked in the remote sites. I finally figured out why. The UTM uses the…
  • Routing / VLAN issue

    Hi, I am hoping this is a simple solve. 2 issues: Client A is unable to get a DHCP address from the DHCP Server. Sophos cannot PING DHCP Server using eth4 Interface. However setting a STATIC IP on Client A allows communication to DHCP…
  • DHCP Relay Agent - GIADDR is not the source IP address

    The setup: Sophos act as DHCP Relay Agent Client Interface: eth7 (192.168.0.1) Transit Interface to DHCP-Server: eth2 (192.168.10.1) DHCP-Server 192.168.100.1 Relay Agent is set to 192.168.100.1 Requests go through to DHCP-Server but the…
  • RE: DHCP Relay dropping GW

    HI René, As you are facing issue with the DHCP with the appliance used as a DHCP relay. The device would not block such request , instead it would be forwarded to the server and when a reply is received it would simply reply to the machine that would…
  • DHCP Relay dropping GW

    Trying to move my DHCP scope back to a Windows server, using the relay option. Clients get's the IP and DNS servers, but they don't get the default GW? Running the same direct from UTM works, and the same direct with a client on the same vlan as the…
  • IPv6 DHCP in an UTM RED-Server/Client network

    In order to migrate our internal network to a dual-stack configuration, we would need to provide v6 addresses via DHCP to all remote sites. Each site is using a Sophos UTM 9.4 gateway, all connected via RED Client/Server channels to our 2 central sites…
  • DHCP - Configuration - UTM for one subnet and Relay for another

    Model: SG210 Firmware Version: 9.351-3 Internal (main) subnet: 10.0.1.1/24 Proposed Phone Network subnet: 10.0.10.1/24 Windows Server 2012 DHCP address: 10.0.1.19 Subnets have been changed for the purposes of the explanation. [:)] Currently we have…