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Posts tagged as “Sophos XG”

Sophos XG: routing DNS queries

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Presentation The routing of DNS queries is similar to a conditional redirector under Windows, which allows to indicate for a DNS zone the server or servers to contact to resolve a record. This type of routing is useful in the case where your network consists of several private domains or for a public domain (yours) not to use a public…

Sophos XG: add a vlan

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In this article, I’ll explain how to declare a vlan on your Sophos XG firewall. Before you create it on the firewall, you must make sure that the port of the switch where the firewall is connected is tagged. Go to the firewall administration web interface, in the left menu click NETWORK 1 . The page opens on the Interface…


Sophos XG configure a DHCP relay

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Présentation A DHCP relay is a service that listens for DHCPDISCOVER frames to transfer them to a DHCP server. The DHCP relay avoids installing a DHCP service by network segment (MPLS, VLAN …). Before configuring the relay firewall, the DHCP service must be an IP range for the segment where the relay will be configured. DHCP Relay Configuration 1. From…

Sophos XG: installation on Hyper-V

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In this tutorial, we will have how to install a Sophos XG firewall on a virtual machine with Hyper-V. For this article, I used the Sophos XG home version which is available for free. Prerequisites Download the ISO firewall on the site sophos and recover the license key that will be sent by email. Create a virtual machine with the following…

Sophos XG: Configure the SNMP Agent

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If you want to supervise the firewall using the SNMP service with software (PRTG, Centreon …), you must activate and configure the agent on the firewall. 1. From the administration interface, go to Administration 1 / SNMP 2 . Check the box 3 to activate the agent, enter the information 4 then click on Apply 5 . 2. Once the…

Sophos XG: configure a Netflow server

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Netflow is Cisco’s network-developed networking protocol, which collects information about IP flows. It is possible under Sophos XG to configure a Netflow server. PRTG has a Netflow sensor. 1. From the administration interface, go to Administration 1 / Netflow 2 and configure the server 3 . Validate by clicking Apply 4 .

Sophos XG: port forwarding rule

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Introduction In this tutorial, we are going to create an incoming traffic rule by transferring from a specific port (443). This type of rule is used for: Publish a web server Inbound SMTP Publish POP / IMAP … Prerequisites Before you start creating the rule, you must add the host to the firewall. In the case of non-standard port, you…

Sophos XG: change the SSL VPN port

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By default the SSL VPN port on the Sophos XG firewall is 8443, since version 17.1 it is possible to change the VPN listening port. Using port 443 for VPN blocks listening to this port for other services (forward / WAF). 1. From the web interface, go to VPN 1 and click on Show VPN settings 2 . 2. Change…

Sophos XG: add a host

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On the Sophos XG firewall, it is necessary in certain cases to declare the host so that it can be used in the firewall rules. 1. From the interface, go to Hosts and Services 1 , IP Host Tab 2 and click Add 3 . 2. Enter the host information: 1 hostname 2IP address version 3 Type of address entered…

Sophos XG: secure emails

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Introduction In this tutorial, we will see how to secure emails with a Sophos XG firewall. The firewall offers two modes of operation for filtering emails: MTA : the firewall will act as an SMTP relay Legacy : it will be placed in transparent mode, which we will see in this tutorial. In both modes the security options are the…

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