Here's an example of the general settings. For this example, select your specific gateway. blocking valid packets). Due to the streaming structure of the traffic and how its reassembled for playback, its not possible to inject malware into this kind of traffic flow making it an ideal candidate for FastPath acceleration. I recommend to set "Outbound interface" to WAN interface. You'll see that you are blocked: Search for something else such as 'higher education' and you will see that it is allowed. If nothing applies, then the default deny all, aka rule 0, will block it. (Rule Review & Best Practice), Sophos Firewall requires membership for participation - click to join, A security focused device with long term firmware support (Check), Allow all devices on the LAN to access to the Internet/WAN (Check and working), Make sure devices on the LAN are behaving (AV & some APP Rules. For this example, well leave this unchecked unless you know how to setup the certificates for this feature to work. Blocking content using just 'keywords' on their own has some limitations in both application and practicality, but can be extremely useful in specific circumstances, such as blocking searches, when used correctly in combination with other Sophos XG filtering mechanisms. First, it is important to understand some of the limitations of blocking keywords in URLs. 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. Sure, but it's all tradeoffs and network security is really a layered approach. Use the interface IP address as the gateway. Firewall rule to allow traffic from LAN to WAN zone: Linked NAT rule for outgoing traffic with masqueraded source. For example, selecting the HTTP service will allow traffic originating from (source) TCP protocol on ports 1:65535 (port 1 through port 65535) to go to (destination) TCP protocol on port 80. it forwards all traffic to the internal Exchange server, and we are not able to access the Sophos Firewall public IP address for HTTPS, SSH, VPN, etc. Web server protection rules: You can configure WAF rules to protect your web servers. 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. Sophos XG: Firewall Rules - DIY Home Tech Forexample,toallowdevicesinaDMZtoaccessupdates,youwantanallowrulefor'DMZ(Network)->Any->Internet'traffic. You can create the following types of rules: Firewall rules: You can allow or disallow traffic flow between zones and networks based on the matching criteria. Thank you for your feedback. You can create linked NAT rules for outgoing traffic because they are source NAT rules. Thereareothersituationswherethedistinctionisessential. Allow clientless SSO (STAS) authentication over a VPN. Decrypt & Scan HTTPS: This allows the same capabilities as mentioned above but for HTTP/S traffic. Thank you for your feedback. This video provides a great in-depth look at firewall and NAT rule configuration in XG Firewall v18: We will cover NAT rules in a future article in this series but today, lets review how to create a firewall rule to accelerate trusted traffic on the FastPath. Exchange 2016 Autodiscover policy Personally, I create MAC Hosts for the devices on my network and add them to their respective firewall rules. 2021-01-22, addedInterface matching criteria in section "WAN-to-DMZ traffic". 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. Even though you have a default LAN to WAN rule, you can still run malware scanning, IPS, application scanning, etc. 1997 - 2023 Sophos Ltd. All rights reserved. External users need to access HTTPS service on internal Exchange server by visiting Sophos Firewall public IP. Create a protection policy In this section, we will be creating two protection policies, one for Exchange Autodiscover and the other for Exchange Webservices. The firewall rule has to match the source zone, source network and devices, scheduled time, destination zone, destination network and services. http://docs.sophos.com/nsg/sophos-firewall/17.5/Help/en-us/webhelp/onlinehelp/nsg/sfos/concepts/SecurityPolicyManage.html, https://community.sophos.com/community-chat/f/user-assistance-feedback. Are they real addresses as internet type or LAN type? Apply Web Category based Traffic Shaping Policy: This enables traffic shaping based on what is defined for each web category. Similar to my consumer router LAN to WAN is ok. WAN to LAN is bad, unless something on the LAN requested it. For this example, this will be set to Any since we have a wide variety of devices on our network that require access to the internet through various services. Then check that FastPath acceleration is enabled under Advanced threat > Advanced threat protection as shown below (it should be set by default). Traffic such as streaming media that is not active code-based is a perfect example of traffic that can be trusted. Intrusion Prevention: This feature, commonly referred to as IPS, allows for deep packet inspection (using Snort) based on pre-defined or customized policies you can create on the IPS Policies tab on the Intrusion Prevention page under Protect. or there is still a configuration that I missed,explanation pleasethank you. This not only minimizes latency and accelerates that application traffic through the firewall, it also has the added benefit of not engaging the DPI engine and TLS inspection resources for traffic that doesnt require inspection. Ifoutbound interface is set to "Any", the NAT rule will be also applied on LAN to VPN (LAN to DMZ) traffic, and then stops LAN to VPN (LAN to DMZ) traffic, and might cause network issue. How are firewall rules processed On the Sophos XG Firewall all rules located in the Firewall section of the admin console are processed in a top to bottom order. Click Save. To continue with the school wallpaper example, here are two URL's: one in English and one in French. Content from both could be found doing a search for wallpapers on a Google image search, but the French version will not be blocked. Detect zero-day threats with Sandstorm: Unfortunately, the Sophos XG Home license does not include the Sandstorm service. Here's an example of the DHCP configuration. New Sophos Support Phone Numbers in Effect July 1st, 2023. Application Control: Same as above except for specific applications. Rules and policies enable traffic to flow between zones and networks while enforcing security controls, IP address translation, and decryption and scanning. There is a hidden firewall rule, known as "rule 0", that is the implicit default drop rule in Sophos XG. New Sophos Support Phone Numbers in Effect July 1st, 2023. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); FastPath Application Acceleration and SD-WAN Routing. Please copy it manually. XG Firewall Initial Setup Easy too easy? (Rule - Sophos Community the intent of XG is to reduce the number of rules and to have every setting in one location. For this example, well create a new entry for the local subnet by clicking Add New Item -> Create new -> IP. Rules and policies - Sophos Firewall To make all of this work we need a Firewall rule that matches Google searches and then applies our web policy. Go to Rules and policies > Firewall rules, select protocol IPv4 or IPv6 and click Add firewall rule. Other URLs that include the word wallpaper are allowed (such as home improvement websites). Sophos Firewall: How to configure firewall rule and NAT rule on Sophos These can be set within each web category definition on the Web page under the Categories tab. The zones can be configured in the Zones tab on the Network page under Configure. Well the IOT says "Hey, I want FTP access" the firewall rule says "hmm, nope you can only have HTTP or HTTPS" but, as it works it's way down the list to that default network policy eventually the firewall will say "Oh, you're on the LAN, sure, "allow all' to the WAN, FTP? Create a firewall rule to allow traffic from LAN to WAN zone. You will need a Nat as well as a firewall rule to allow the traffic in. If you were to use "Any" as the destination, you would negate the entire purpose of having a DMZ. Sophos XG Firewall Rule Best Practice Heres a summary of the resources available to help you make the most of the new features in XG Firewall v18, including application FastPath acceleration and SD-WAN Policy Routing: If youre new to Sophos XG Firewall, learn more about the great benefits and features XG Firewall can deliver to your network. This article describes how to use Sophos XG to blocksearches that contain specific keywords, such as 'Wallpapers', 'VPNs' or 'Bypass Firewall'. Make sure you use the IP address range corresponding to the network you're configuring. Source Networks and Devices: This defines which specific network(s) or device(s) where traffic will originate from which can be based on anything that is defined on the Host and Services page under System or newly defined by clicking Add New Item -> Create new. For example, if a new connection is being made, it will assess it against the firewall rules starting from the top. Maybe you can start to do a Proxy for certain clients? internet for the majority of users). 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. We can use it as Destination network in the SD-WAN policy route to prevent interference with other routes, and no need to worry aboutroute precedence, as screenshot below. Traffic can be accelerated onto the Network Flow FastPath in two ways: You might be wondering, when would it make sense to accelerate application traffic on the FastPath, or in other words, what can be trusted? For this example, this will be unchecked and wont apply for most basic home networks. 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. For this example, this will be Any since we dont know what IP addresses our devices will require access to. The XG software is pretty intuitive, especially to someone not within the industry. it exposes all service ports of the internal host to Internet, which is a huge security risk, and. Well that's not a very good example, because in my case the traffic CAN come from anywhere. Your browser doesnt support copying the link to the clipboard. Please make sure there is no NAT rule applied to LAN to VPN traffic, unless NAT is necessary for local VPN network to reach remote VPN network. Note: Enabling Intrusion Prevention can potentially slow down your internet speeds. For the DNS rule for example, I created a DNS-only DNS policy, as in that rule I will only allow the DNS service does not make sense to have other things in the IPS rule.For HTTP / HTTPS rule I used the standard IPS policy of XG LanToWan. Subscribe to get the latest updates in your inbox. Finally, search for home improvements/wall covering and you will notice when you click through to those sites, you will be allowed access to pages that contain the keyword 'wallpaper'. XG Firewall v18 has evolved SD-WAN further with the introduction of Synchronized SD-WAN, a new Sophos Synchronized Security feature that offers additional benefits with SD-WAN application routing. is there a special NAT Rull? If that's the case, hats off to the development team. The linked NAT rule appears in the NAT rule table. /24 .address range in the DMZ? You can adjust the order of firewall rules from the main Firewall page. I created a blog with some tutorials for Sophos XG home users that may be useful:https://shred086.wordpress.com/, Sophos XG guides for home users: https://shred086.wordpress.com/. Each rule is checked to see if it matches and then the next rule is evaluated in that order until the bottom rule is reached. 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. Apply Application-based Traffic Shaping Policy: This enables traffic shaping based on what is defined for each application. I've classified almost all of the services they need but I keep the default LAN to WAN rule at the bottom with logging on, such that when one of the devices use ports outside of the services I have set, I'll see it in the logs and I can do some research to figure out what it is. The biggest weakness here, isn't Sophos, but rather an inexperienced firewall user unsure if best practices are being followed. 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. It's personal preference. The latest news, articles, and resources, sent to your inbox weekly. Go to Wireless > Wireless networks and click Add. In these cases, you need something more specific than a category or website block, and this is where blocking by keywords can be useful. 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! Thank you. This is what allows devices/clients on your local network (LAN) to access the internet. In this context, Sophos XG does not look to see if the keyword is present in the content of a web page, rather it just checks if that keyword exists in the URL. Currently I have the default network allow all in place (LAN to WAN) and a country blocking rule. Logging sucks but hopefully it will get better in v17. I m using Web Proxy to allow browsing for Branches users but i cannot choose service HTTP/HTTPS only and must leave it as any service cause its by XG design when use it as proxy according to a support case. If instead the first rule does apply to that connection/traffic, it will apply that firewall rule and not assess it against the second rule. Primary Gateway: This setting only applies if you have multiple gateways, which is likely not the case for a normal home network with only one Internet Service Provider (ISP). And of course, these communication and collaboration applications are among the most important in any business, which makes them ideal for FastPath acceleration. More restricted you are, more safe your network will be. Firewall rules. The logic of Full NAT configuration is to configure firewall rule and NAT rule for DNAT first, and then configure SNAT in the NAT rule. For my IOT devices that don't need to be on my local subnet, I have them on my guest subnet using a separate WiFi SSID and VLAN so they can never access my local subnet. You might need to create another firewall rule for VPN to LAN traffic. XG Firewall Initial Setup Easy too easy? 1. 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. Source Zones:This is the zone(s) traffic will ingress/enter the Sophos device which is LAN for this example. You can create the following types of rules: Firewall rules: You can allow or disallow traffic flow between zones and networks based on the matching criteria. 2. 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. Please contact Sophos Professional Services if you require assistance with your specific environment. Sophos Firewall v17: Group firewall rules - Sophos Support if you need to block something on web or application, one rule can be used (if the ports are HTTP/HTTPS). If I can identify and confirm it, I'll add it as a service to pertaining firewall rule. The option WAN Link Load Balance gives you the ability to load balance outgoing WAN traffic. Similarly to how I had Sophos UTM9 setup, if I wanted SMTP for Office 365, I needed to allow that service otherwise it wouldn't work. Select New . Zones are a logical grouping of physical and/or virtual interfaces. For any traffic leaving your network to the internet, this should be checked which is the case for this example. For this example, well set this to None. The keywords also have to be literal matches and cannot contain any special characters such as wild card values or regex. Select Create linked NAT rule and specify the rule name and position. It seems so simple. In this example, it is 192.168.20.0/24, Original destination: public IP address of the Exchange server. How to see the log for Sophos Transparent Authentication Suite (STAS). For example, when you search for home renovation wall paint, you could get blocked going to. To get started with Fastvue Sophos Reporter, download the free 30-day trial. Use this option if you dont want to manage a NAT rule table and a firewall rule table. It isrecommended to move the LAN to WAN NAT rule to bottom, otherwise, it can be applied on other traffic, and cause unexpected result. Note that some of the rules in the screenshot are actually grayed out and were just example rules Sophos added during the install. It is to prevent the DNAT rule from matching LAN-to-WAN, or LAN-to-DMZ traffic. If a post solvesyourquestion please use the'Verify Answer' button. https://community.sophos.com/community-chat/f/user-assistance-feedback. Scan HTTP: This allows for the scanning of of HTTP traffic for malware, unwanted applications and to enforce SafeSearch features on Google, Yahoo and Bing. That's correct. If the first rule doesnt apply to that connection/traffic, it will assess it against the second rule. This way I dont have to deal with static DHCP mappings. 1. Make sure route precedence is configured to match your network requirement. This example shows how to create a firewall rule with a linked NAT rule for outgoing traffic from LAN. For this example, select Accept. Your email address will not be published. Always use the following permalink when referencing this page. Your email address will not be published. To configure a WAF rule, set the firewall rule action to Protect with web server protection. 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. yes it's a WAN, and the sophos WAN is connected to a Mikrotik Local IP. Since we are going to apply this rule to search engines, it is a good place to check. This version of the product has reached end of life. The way I have it setup now is reversed. You can create firewall rules for IPv4 and IPv6 networks. And select None for Security Features and do not select any of the check boxes. You can implement policies, specify access for endpoint devices and servers, and prioritize traffic. By default, Sophos XG creates a Default Network rule that you can see on the bottom of your firewall rules. 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. Heres a couple of things to consider that may help. And actually you have a LAN to WAN Rule, allowing everything. Services are basically an alias for different protocols and/or ports. However, with users and/or groups setup, this allows you to apply the firewall rule to specific users and/or groups. For this example, this will be checked. So it sounds like you're recommending a Deny All except for those service I allow type of approach, am I understanding you correctly? Sophos Firewall WAN interface Port2 connects to Internet, and DMZ interface Port1 connects tointernal Exchange server. Sounds like that's not the recommended approach. Theorder of the rules still applies just like UTM, so you cannot say deny all and then add a rule to allow All or vice versa. I'll start reading through it this evening. For this example, well set this to None. Actually you could start to setup DHCP Static Mapping with Clientless Users. But as you have noticed, it brings confusion at the same time. The rule table enables centralized management of firewall rules. Choose your embed type above, then paste the code on your website. That will only work if you real addresses in your DMZ. For information on the second option, please see Sophos' KB article on Blocking content using a list of terms. If scanning HTTP(s) traffic is enabled, its recommended to enable this to force web traffic to use HTTP(s) thus being scanned. This is why you dont need a firewall rulefrom the WANto the LAN to access the internet, nor would you want to since you would open up your local network to the internet which would be bad. Position: Defines whether this firewall rule will be created above or below all of your other firewall rules. It will remain unchanged in future help versions. Scan FTP for Malware: Similar to what was already mentioned except for File Transfer Protocol (FTP) traffic. Keep in mind that as best practice you should use multiple rule if you need multiple ports to be opened. Your browser doesnt support copying the link to the clipboard. Information on setting up various devices for everyday home use. With SSL/TLS inspection rules, you can intercept and decrypt SSL and TLS connections over TCP, enabling Sophos Firewall to enforce secure connections between clients and web servers. Click the On/Off switch to turn wireless protection on. This includes IP addresses, subnets, MAC addresses, Fully Qualified Domain Names (FQDN) or even countries. Your'AnyAnyAny'ruleonlyappliestopacketsintheFORWARDchain,and"60001"meansthatthisisadropoutoftheINPUTchain. 2020-12-23,updated section "LAN-to-WAN traffic". The other side of the problem is that you could potentially be blocking content that should be allowed for others. Create a firewall rule with a linked NAT rule - Sophos Firewall Initially, all traffic flows are processed by the Firewall stack and passed to the DPI engine for further identification. It will remain unchanged in future help versions. But he's not! Please visit our User Assistance forum on the Community to share your idea! 1997 - 2023 Sophos Ltd. All rights reserved, Xstream architecture and the new DPI engine, A full list of recommended community articles on v18, Making the most of XG Firewall v18 Part 2, Making the most of XG Firewall v18 Part 1. This article describes how to enable Sophos XG's new XStream DPI engine while also utilizing the Web Proxy to enforce SafeSearch and YouTube restrictions. By default, Sophos XG creates a Default Network rule that you can see on the bottom of your firewall rules. 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. So I create a firewallrule "allowing" HTTP and HTTPS for them and set it as a top rule. I'd also recommend anti-virus on your end points (computers) as another layer of security. Block Google QUIC(Quick UDP Internet Connections): QUIC is a transport layer network protocol (UDP 443) created by Google. What is the network size in the DMZ? Nothing special here: 1 - default ip LAN is use: 172.16.16.0/24 2 - Sophos XG Firewall Home Edition 16.05.8320 MR-8 3 - i DIDNOT mention what my rule function, because i screenshot it here: I want him to block anything! Lan to Wan needs a little more refinement). Sophos Firewall: How to configure firewall rule and NAT rule on Sophos Firewall v18. Rule Name: Type in a rule name that allows you to easily identify what this rule is for such as, Allow LAN to WAN. (At least in terms of Wan to Lan. This will ensure that traffic will be accelerated on the FastPath and not redirected through the DPI engine for unnecessary security scanning. Btw I've confirmed that the firewall rule is working as it is blocking access to resources I wanted blocked. 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.
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