Please contact Sophos Professional Services if you require assistance with your specific environment. Note: Sophos XG is a stateful firewall, meaning if a connection is made from within your local subnet to the internet (assuming you have a firewall rule that allows this), traffic will be allowed both outbound and inbound on that connection. deny all vs. allow all outbound by default). Sophos Firewall LAN interface Port1 connects to internal computer, and DMZ interface Port6 connects to internal Exchange server. Oldest Votes Newest Billybob over 6 years ago You are correct that applying webfiltering, app filtering, ips, and qos in one rule makes XG very powerful. This article describes how to use Sophos XG to blocksearches that contain specific keywords, such as 'Wallpapers', 'VPNs' or 'Bypass Firewall'.
Remember, the default deny rule is built into XG just like UTM so you don't have to deny traffic. 2. The firewall rule has to match the source zone, source network and devices, scheduled time, destination zone, destination network and services. Solar System DC to AC ratios and clipping, Sophos XG: Setting up IP masquerading for the Roborock S7, Sophos XG: Using a backup ISP for specific devices/applications, Nessus Home: Scanning your network for vulnerabilities, Sophos XG: Completely isolating the local and guest network. You can now apply the above process with other keywords to prevent specific situations in your organization, such as searches for 'VPNs' or 'Bypass firewall' that could potentially result in those pesky students (or employees!) Since we are going to apply this rule to search engines, it is a good place to check. For this example, well set this to None. Apply Web Category based Traffic Shaping Policy: This enables traffic shaping based on what is defined for each web category. It isrecommended to move the LAN to WAN NAT rule to bottom, otherwise, it can be applied on other traffic, and cause unexpected result. You can create firewall, web server protection, NAT, and SSL/TLS inspection rules. Create a protection policy In this section, we will be creating two protection policies, one for Exchange Autodiscover and the other for Exchange Webservices. All IP address details mentioned on this page are examples. Position: Defines whether this firewall rule will be created above or below all of your other firewall rules. What is the address range in the DMZ? No remote access / VPN for the moment (Done, port 443 and user portal, disabled). Sounds like that's not the recommended approach. Type a password. By default, Sophos XG creates a Default Network rule that you can see on the bottom of your firewall rules. It will remain unchanged in future help versions. This provides a level of application routing control and reliability that other firewalls cant match. Your'AnyAnyAny'ruleonlyappliestopacketsintheFORWARDchain,and"60001"meansthatthisisadropoutoftheINPUTchain. I want the WAN to be able to access the entire DMZ network and full service without translating the IP, I have set it on the firewall rule but the ping is stuck on the DMZ gateway.
Create a firewall rule with a linked NAT rule - Sophos Firewall I just started testing Sophos XG as a VM in Hyper-V to make sure it will be suitable for our needs. Do you setup with Deny All and then work to allow only those services that are required or do you Allow Allexcept what you want blocked? So instead of allow all, I would change that to http/https/ftp and any other service that is needed in your environment instead of that allow any service rule and go from there. Always use the following permalink when referencing this page. 1. create a firewall rule on top of list, to allow internal computers access the Exchange server, 2021-02-12, added section "specify primary gateway". The post provides a simple guide for configuring firewall rule and NAT for LAN-to-WAN, LAN-to-VPN, WAN-to-DMZ traffic, and Full NAT. You can create linked NAT rules for outgoing traffic because they are source NAT rules. Nothing is wrongsetup was simple. Click Save. Is why that default LAN to WAN allow is there in the first place. In the Add IP Host dialog, type in a name such as Local subnet, select IPv4, select Network and type in your subnet address (ex: 172.16.16.0) and set your subnet to /24 (255.255.255.0). The keywords also have to be literal matches and cannot contain any special characters such as wild card values or regex. But as you have noticed, it brings confusion at the same time.
Let us know how you're using keyword blocks in the comments! If I can identify and confirm it, I'll add it as a service to pertaining firewall rule. Is the mikrotik in bridge mode. In this example, I chose IP address of Sophos Firewall Port6, 192.168.15.254. It's personal preference. Block if the keyword is present in URLs using custom Web Categories. Traffic such as streaming media that is not active code-based is a perfect example of traffic that can be trusted. The order in which you create firewall rules is extremely important as firewall rules are assessed from top to bottom and will stop being assessed once a firewall rule is applied.
Ifyouweretouse"Any"asthedestination,youwouldnegatetheentirepurposeofhavingaDMZ. And of course, these communication and collaboration applications are among the most important in any business, which makes them ideal for FastPath acceleration. My concern here is the default Allow (ID 5)I've configured isn't setup correctly. That will work, but maybe you want to start to be more granular. Hope this helps. I'll start looking into that. You can also use this feature to simply log the pages and keywords, and use Fastvue Sophos Reporter to send alerts when the keyword occurs in the content of a page (see our video on Receiving Alerts On Keywords Within Visited Web Pages). Log Firewall Traffic: As the name implies, with this checked the traffic that applies to this firewall rule will be logged which you can view from the Log Viewer located on the top right section of any page. Its that easy! It's already painful having to deal with HTTPS scanning at times (some websites or apps will not work with HTTPS scanning so you have to create exceptions). Your email address will not be published. For this example, this will be checked. If nothing applies, then the default deny all, aka rule 0, will block it.
XG Firewall: Getting started and best practices for - Sophos News Btw I've confirmed that the firewall rule is working as it is blocking access to resources I wanted blocked. You can create firewall rules for IPv4 and IPv6 networks. The approach I've taken is setting up separate firewall rules for my computer/mobile devices, media streaming devices and IOT devices that have to be on my local subnet. For this example, well set this to None. However, this does generate a lot of configuration that is not strictly required. A firewall rule should work okay without a NAT.
Network Protection: Firewall, NAT, QoS, & IPS, Default drop although last rule is "reject any any any", UTM Firewall requires membership for participation - click to join, PacketfilterlogfilesontheAstaroSecurityGateway. When I setup Sophos XG, I saw that I have the option to select a default "Allow All" except what's not allowed via any of the policies like adult content, inappropriate content for business, I can also block specific sitesetc. This includes IP addresses, subnets, MAC addresses, Fully Qualified Domain Names (FQDN) or even countries.
Firewall rules - Sophos Firewall This meant setting up Definitions for services, Hosts, FQDN Hostsetc to enable my network to talk to the outside world for all that was needed. The main and obvious limitation with blocking content using keywords in URLs, is that if the URL of a website or page does not include the keyword exactly, then the content will not be blocked. Thanksforyouranswer,Bob. You can implement the following actions through firewall rules: Access and logging Overview This article describes the steps to add firewall rules to firewall rule groups (firewall rule grouping). Once an application traffic flow is determined to be trusted, the Network Flow FastPath is directed to handle the packet flow directly and shuttle the packets through on the FastPath, bypassing the DPI engine. However, if a NAT rule positioned above the linked NAT rule matches the same traffic, the first rule applies to the traffic. Don't set service to be "Any" in firewall rule and NAT rule, as. Overwrite default NAT policy for specific gateway: If you have multiple gateways, this allows you to adjust the NAT policy for each gateway. Well that's not a very good example, because in my case the traffic CAN come from anywhere. Note: When None is selected, packets will not go through the web proxy. For example, if your hardware has multiple network interfaces, you will likely have one network interface in the LAN zone and another in the WAN zone. Now that you've created a Custom Category containing your keywords, used it in Web Policy that also enforces SafeSearch, and applied that policy to a firewall rule that kicks in for Google domains, it is time to test! Web Policy: Ability to restrict web access to certain categories of websites as defined in the Policies tab on the Web page under Protect. You'll see that you are blocked: Search for something else such as 'higher education' and you will see that it is allowed. Detect zero-day threats with Sandstorm: Unfortunately, the Sophos XG Home license does not include the Sandstorm service. Use the interface IP address as the gateway. Would appreciate any insight you might have. Browse to the Firewall page under Protect and click Add Firewall Rule -> Add User/Network Rule. Sophos Firewall requires membership for participation - click to join. added more explanation about why not to set servcie to be "Any" in firewall rule and NAT rule. For this example, select the lantowan_general pre-defined policy as it provides a good balance between protecting your network/devices and preventing false positives (i.e. Synchronized SD-WAN leverages the added clarity and reliability of application identification that comes with the sharing of Synchronized Application Control information between Sophos-managed endpoints and XG Firewall. With ever increasing network congestion, having the tools to optimize your important business applications is becoming increasingly important. You could if you hav3 licence use WAF, depends on how many serversyou have?ian. Loopback policies enable traffic to flow between internal networks with unique subnets. When you complete this unit, you'll know how to do the following: You can create a linked NAT rule when you create a firewall rule. The biggest weakness here, isn't Sophos, but rather an inexperienced firewall user unsure if best practices are being followed. So it sounds like you're recommending a Deny All except for those service I allow type of approach, am I understanding you correctly? 1997 - 2023 Sophos Ltd. All rights reserved.
Create a wireless network as a separate zone - Sophos Firewall Internal computers need to access HTTPS service on internal Exchange server via its public IP 10.176.200.58. Even if the school has enforced SafeSearch this only blocks access to inappropriate images. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. Just as you want your important business applications path through the firewall optimized and accelerated on the FastPath, you may also want to ensure your applications path to the cloud or a branch office is similarly optimized. 08 April, 2021 by Etienne Liebetrau Understanding and Optimizing Sophos XG's DNAT Rules Sophos XG makes it easy to expose internal services to the public internet using the Server Access Assistant (DNAT) wizard. This allows you to route important business application traffic out a preferred ISP WAN link or a branch office VPN connection while less important traffic utilizes a different route. Subscribe to get the latest updates in your inbox. Interface matching criteria > Outbound interface" is configured to Port1, the DNAT rule won't match inbound HTTPS traffic arriving Port2. What is the network size in the DMZ? Zones are a logical grouping of physical and/or virtual interfaces. Sophos Firewall provides DHCP and DNS. addedIP host group "Internet IPv4" into SD-WAN policy route, added section "LAN-to-DMZ server via public IP, Full NAT", Sophos Firewall requires membership for participation - click to join, LAN-to-DMZ server via public IP, Full NAT, Sophos Firewall: Auto-create an object for IPv4 internet addresses group, source zone: LAN,the zone internal computers locates, source networks: Any, or specific internal subnet, SNAT: MASQ, or the preferred WAN IP for Masquerading, Outbound interface: Port2, the Sophos Firewall WAN interface. For this example, leave this unchecked unless you have a specific need to log all traffic going through this firewall rule. Setup the rules you need to still be able to access the internet from the devices you want, then disable the default allow all rule. I deleted default rule, and create 4 rules and 2 IP Host Group!I tested on IP: 172.16.16.11/24 by add to ITGroup where this group is going anywhere. From my understanding if you use the MAC address you do not get the device ID in reports. There are two ways to block content by keyword in Sophos XG: This article takes you through the first option of blocking keywords present in URLs. It seems so simple. ake sure the SD-WAN policy route doesn't interrupts other traffic: IP host group "Internet IPv4", as per KBA, Interface matching criteria > Outbound interface.
The behavior we want to achieve is: First, a quick rundown of the Sophos XG features involved. I mean, is that it? All of my IOTs, the NAS, Laptops, Computer, Tablets, Phones etc are all working as they did before. Wallpaper images are often served from sites categorised by Sophos XG as Photo Galleries, and a school may be reluctant to block the entire category as it is useful to art and photography students (and potentially many others). This makes the rule writing extremely powerful but also easier to errors where you think you are only allowing certain users through a certain rule but the traffic is still passing through some other rule. I recommend to set "Outbound interface" to WAN interface. Go to Wireless > Wireless networks and click Add. Lateral Movement protecting for a few devices on my network (Not yet setup, but the process seems straight forward). Rule Name: Type in a rule name that allows you to easily identify what this rule is for such as, Allow LAN to WAN. Don't forget, XG is a layer 8 firewall. Configure the user inactivity timer for STAS, Check connectivity between an endpoint device and authentication server using STAS, Migrate to another authenticator application, Use Sophos Network Agent for iOS 13 devices, Use Sophos Network Agent for iOS 12 and Android devices, Sophos Authentication for Thin Client (SATC), Set up SATC with Sophos Server Protection, Sophos Firewall and third-party authenticators, Couldn't register Sophos Firewall for RED services, Configure a secure connection to a syslog server using an external certificate, Configure a secure connection to a syslog server using a locally-signed certificate from Sophos Firewall, Guarantee bandwidth for an application category, How to enable Sophos Central management of your Sophos Firewall, Synchronized Application Control overview, Reset your admin password from web admin console, Download firmware from Sophos Licensing Portal, Troubleshooting: Couldn't upload new firmware, Install a subordinate certificate authority (CA) for HTTPS inspection, Use Sophos Mobile to enable mobile devices to trust CA for HTTPS decryption, https://docs.sophos.com/nsg/sophos-firewall/latest/Help/en-us/webhelp/onlinehelp/, Specify firewall rule and linked NAT rule settings. That's it for the moment. A linked NAT rule translates only the traffic that matches the settings of the firewall rule that its linked to. Using Sophos XG's Web Categories to block internet content makes sense for categories such as 'Adult Content' or 'Gambling' that are obviously inappropriate in most organizations, but other Web Categories are not as easily defined as inappropriate or time-wasting. If a post solvesyourquestion please use the'Verify Answer' button. If you were to use "Any" as the destination, you would negate the entire purpose of having a DMZ. With my current setup, I could run it that way since I've categorized most of the services my devices use, but it's still not worth having to troubleshoot every week so I just leave it enabled. The option WAN Link Load Balance gives you the ability to load balance outgoing WAN traffic. internet for the majority of users). So it sounds like then, outside of more granular rules, the overall configuration looks ok? Sophos Firewall LAN interface Port1 connects to internal computers, and WAN interface Port2 connects to Internet. Your specific requirements will vary and theres many different opinions and strategies for setting up firewall rules (i.e. Create the protection policies as shown in the examples below. Apply Application-based Traffic Shaping Policy: This enables traffic shaping based on what is defined for each application. Lan to Wan needs a little more refinement). Specify the following settings: Source zone: WiFi; Source networks: Any; Destination zones: WAN; Destination networks: Any; Services: Any; Action: Accept; Here's an example of a firewall rule. More restricted you are, more safe your network will be.
Default drop although last rule is "reject any any any" - Sophos Community Go to Web server > Protection policies and click Add. /24 .address range in the DMZ? This type of traffic includes all popular streaming services such as Netflix and Spotify, but also VoIP and collaboration applications such as Zoom, GotoMeeting, Skype for Business, Microsoft Teams Calls, and others. Destination Networks: Same idea as explained for Source Network and Devices except this where the traffic is specifically going to. Thank you for your feedback. Done and Working). For this example, well set this to None. In this third in a series of articles on making the most of the great new features in XG Firewall v18, were going to focus on the tools available to you to optimize your important business application traffic using the new Xstream Network Flow FastPath and the new SD-WAN Policy Based Routing options. Source NAT and destination NAT rules enable traffic to flow between private and public networks by translating non-routable, private IP addresses to routable, public IP addresses. In this example, it is 10.176.200.58, DNAT: IP address of internal Exchange server. For example, if a new connection is being made, it will assess it against the firewall rules starting from the top. Block if the keyword is present in the content of a page using Content Filters. I'd also recommend anti-virus on your end points (computers) as another layer of security. Go to webadmin > Routing > SD-WAN policy routing, add a newIPv4 SD-WAN policy route, Detail of those gateways can be checked on webadmin > Routing > Gateways. In these cases, you need something more specific than a category or website block, and this is where blocking by keywords can be useful. Enter the password again to confirm it. Open a new thread. That's-unintuitive,toavoidastrongerword. For Sophos Firewall upgraded from v18.0 or earlier version, we must manually create theIP host group "Internet IPv4", as per KBA Sophos Firewall: Auto-create an object for IPv4 internet addresses group, internal computers --- Port1 [Sophos Firewall] Port2 ---IPsec VPN --- [remote VPN gateway] --- remote VPN network, To allow internal computers access remote VPN network, just create a LAN to VPN firewall. SafeSearch is not possible using the DPI engine). For this example, well set this to All the Time. For some reason they chose to use ALLOW ALL template for basic rule writing instead of guiding you towards writing better rules. Choose your embed type above, then paste the code on your website. To allow internal computers access Internet: 1. go to firewall webadmin> Rules and policies > Firewall rules, create a firewall rule to allow LAN to WAN traffic, 2. go to firewall webadmin>Rules and policies > NAT rules,create NAT rule to apply Masquerading on LAN to WAN traffic. source networks:192.168.61.0/24, or any other local subnet configured in site-to-site IPsec VPN, Destination networks:192.168.71.0/24, or any otherremote VPN subnetconfigured in site-to-site IPsec VPN, source networks: Any, or specific IP addresses of all external users, Destination zone: DMZ, the zone internal Exchange server locates, Destination networks: Sophos Firewall public IP visited by external users, in this scenario, it is IP address of WAN Port2, Original source: Any, or specific IP addresses of all external users, Original destination: Sophos Firewall public IP visited by external users, in this scenario, it is IP address of WAN Port2, DNAT: IP address of internal Exchange server. In this example, it is 192.168.15.15, SNAT: public IP address of Exchange server, or IP address of Sophos Firewall Port6.
Sophos Firewall: Best practices For this example, this will be unchecked and wont apply for most basic home networks. 1997 - 2023 Sophos Ltd. All rights reserved. Chris,pleasepostonesuchlinefromthefullFirewalllogfile,notfromtheLiveLog. The MTA Rule is not needed, if you are not using any mail content scanning. This is a bit of a limitation for both inclusion or exclusion. Match known users: For this example, this will be unchecked since we want this firewall rule to apply for all devices. Where I'm currently confused (I actually posted this in another threadI think confusing these two). Finally, add this newly created Local subnet to the Source Networks and Devices list. Im a bit confused by your firewall rules. I usually only allow ports that I think are needed. Thank you. I am new to Sophos Firewall. Required fields are marked *. In general, in the interest of security, never create a FastPath rule for general web browsing or file sharing sites or applications. For example, if a new connection is being made, it will assess it against the firewall rules starting from the top. Heres a couple of things to consider that may help. Description: Provide a description so you can remember specifically what this rule does such as, Allow all traffic originating from LAN to access the internet.. Firewall rule management is more powerful and streamlined in v17 that will make working with firewall rules easier, particularly in environments with large numbers of firewall rules. For this example, select Accept. __________________________________________________________________________________________________________________. Inbound traffic arrives Port2 will be checked against the DNAT rule. Application Control: Same as above except for specific applications. If that's the case, hats off to the development team. Here's an example of the DHCP configuration. How to see the log for Sophos Transparent Authentication Suite (STAS). This is what allows devices/clients on your local network (LAN) to access the internet. The purpose of this example is to explain each of the settings in more detail. 1. The way I have it setup now is reversed. incoming interface: Port1, the LAN interface, Source networks: 192.168.3.0/24, which is LAN subnet, Primary gateway: Port2_GW, gateway of WAN interface Port2, Backup gateway: Port3_GW, gateway of WAN interface Port3, If policy based site-to-site IPsec VPN is in use, and 192.168.3.0/24 is local VPN subnet, please make sure, If 192.168.3.0/24 needs to access another LAN network, for example, 192.168.21.0/24 via Sophos Firewall, please make sure, To check route precedence, please run the following command in, To change route precedence, please run Device Console command, To make SD-WAN policy routes to be the least preferred, please run Device Console command. Required fields are marked *. During Schedule Time: As the name implies, you can setup times when this firewall rule will be in effect as defined on the Access Times tab on the Profiles page under System. Thank you for your feedback. https://docs.sophos.com/nsg/sophos-firewall/18.5/Help/en-us/webhelp/onlinehelp/index.html?contextId=t_202010151228290340. Your browser doesnt support copying the link to the clipboard. INSTRUCTIONS: 'How to download firmware updates' VIDEO: 'Firmware update and roll-back' Firewall rule and protection policy recommendations SSL/TLS inspection also prevents malware transmission through encrypted connections. Let's take an example, say I want to ensure my IOTs (grouped via Clientless Users) can only access HTTP and HTTPS (just as an example). Remember, the default deny rule is built into XG just like UTM so you don't have to deny traffic. Firewall rule to allow traffic from LAN to WAN zone: Linked NAT rule for outgoing traffic with masqueraded source.