sophos xg firewall rules examplessophos xg firewall rules examples

sophos xg firewall rules examples28 May sophos xg firewall rules examples

Web server protection rules: You can configure WAF rules to protect your web servers. 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. 1. create a firewall rule to allow WAN to internal Exchange server traffic, internal computer, 192.168.20.0/24 --- Port1 [Sophos Firewall] Port6 --- internal Exchange server (in DMZ zone), 192.168.15.15. 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. 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). 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. 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! size in the DMZ? 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. Ifyouweretouse"Any"asthedestination,youwouldnegatetheentirepurposeofhavingaDMZ. You can adjust the order of firewall rules from the main Firewall page. 1997 - 2023 Sophos Ltd. All rights reserved. Skip ahead to these sections: 0:00 Overview 0:32 Create a new firewall rule 2:11 Configure existing firewall rules Read more about Firewall rules: DSCP Marking:Per the Sophos XG help docs, this setting classifies flow of packets as they enter the local network depending upon QoS. For this example, leave it undefined. The XG software is pretty intuitive, especially to someone not within the industry. Don't forget, XG is a layer 8 firewall. Here's an example of the general settings. The keywords also have to be literal matches and cannot contain any special characters such as wild card values or regex. For example, to allow devices in a DMZ to access updates, you want an allow rule for 'DMZ (Network) -> Any -> Internet' traffic. For this example, leave this unchecked unless you have a specific need to log all traffic going through this firewall rule. Your specific requirements will vary and theres many different opinions and strategies for setting up firewall rules (i.e. Thank you for your feedback. Applications that enable users to download updates or files, are NOT good candidates for FastPath acceleration as files can obviously contain active code and be malicious. 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". You can create linked NAT rules for outgoing traffic because they are source NAT rules. 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. Basically, if you deleted all of your firewall rules, this is what blocks all traffic from ingressing or egressing Sophos XG. For example, school students can waste many hours looking for new wallpapers for their mobile devices and laptops using the image search feature on Google (or any search engine). For this example, this will be Any since we dont know what IP addresses our devices will require access to. No remote access / VPN for the moment (Done, port 443 and user portal, disabled). New Sophos Support Phone Numbers in Effect July 1st, 2023. XG will be able to resolve those clients and you can setup a more granular rules for your predefined clients (PCs / IoT etc.). If it doesn't match one of those, then the firewall rule does not apply to that "connection", and it will move down the list of firewall rules until something applies. Sophos XG Firewall Rule Best Practice Keep in mind that as best practice you should use multiple rule if you need multiple ports to be opened. Mar 11, 2022 With firewall rules, you can allow or disallow traffic flow between zones and networks. internet for the majority of users). Your email address will not be published. Minimum Source HB Permitted: You can ignore this setting unless youre running Sophos end point software on your devices. 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. 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? deny all vs. allow all outbound by default). Remember, the default deny rule is built into XG just like UTM so you don't have to deny traffic. Sophos Firewall: Web Application Firewall for Exchange 2016 Action: Either accept, drop or reject the traffic. By default, Sophos XG creates a Default Network rule that you can see on the bottom of your firewall rules. 2. 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. 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. Create a wireless network as a separate zone - Sophos Firewall I'd say experiment and find what works for you. New Sophos Support Phone Numbers in Effect July 1st, 2023. In our last two articles, we covered the Xstream architecture and the new DPI engine as well as the new TLS Inspection in XG Firewall v18. Sophos Firewall v17: Create & Configure Firewall Rules The rule table enables centralized management of firewall rules. Basically, if you deleted all of your firewall rules, this is what blocks all traffic from ingressing or egressing Sophos XG. It's personal preference. The rule table enables centralized management of firewall rules. That will work, but maybe you want to start to be more granular. Your'AnyAnyAny'ruleonlyappliestopacketsintheFORWARDchain,and"60001"meansthatthisisadropoutoftheINPUTchain. Chris,youneedarulethatuses'Internet->Any->{groupof"External(Address)"objects}'. Create the protection policies as shown in the examples below. Go to Web server > Protection policies and click Add. Understanding and Optimizing Sophos XG's DNAT Rules - Fastvue 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/. Click Save. 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. Call me paranoid, but I'm concerned that a single firewall rule, even if I've selected everything I want blocked, is the right way to go. XG Firewall: Getting started and best practices for - Sophos News I allow all, except for whatever IPS and Web policies block. Another new and improved capability in XG Firewall v18 is SD-WAN Policy Based Routing (PBR). 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! please note that only one question per thread is allowed. If I can identify and confirm it, I'll add it as a service to pertaining firewall rule. The Network Flow FastPath is another key component of the new Xstream architecture and provides application acceleration for trusted traffic. Its that easy! Minimum Destination HB Permitted: Same as above. 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). In this example, it is 10.176.200.58, DNAT: IP address of internal Exchange server. SSL/TLS inspection also prevents malware transmission through encrypted connections. The purpose of this example is to explain each of the settings in more detail. To continue with the school wallpaper example, here are two URL's: one in English and one in French. For this example, well set this to None. 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. Help us improve this page by. Browse to the Firewall page under Protect and click Add Firewall Rule -> Add User/Network Rule. Thereareothersituationswherethedistinctionisessential. If the first rule doesnt apply to that connection/traffic, it will assess it against the second rule. Specify a linked NAT rule to translate outgoing traffic from the LAN. Type a password. For a detailed explaination, see this thread(page 2) in the official Sophos community forums. These can be set within each web category definition on the Web page under the Categories tab. Sophos Firewall v17: Create & Configure Firewall Rules I just started testing Sophos XG as a VM in Hyper-V to make sure it will be suitable for our needs. Would appreciate any insight you might have. In this example, I chose IP address of Sophos Firewall Port6, 192.168.15.254. Personally, I create MAC Hosts for the devices on my network and add them to their respective firewall rules. that why i say my lab is not working. Required fields are marked *. The latest news, articles, and resources, sent to your inbox weekly. Is this setup less secure than deleting the default LAN to WAN rule and only explicitly allowing connections? Initially, all traffic flows are processed by the Firewall stack and passed to the DPI engine for further identification. 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 provides a level of application routing control and reliability that other firewalls cant match. Well that's not a very good example, because in my case the traffic CAN come from anywhere. By default, its set to MASQ, which will use your internet gateway/modem assigned IP address for rewriting the new source address. 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. 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. Finally, add this newly created Local subnet to the Source Networks and Devices list. Your email address will not be published. In this example, it is 10.176.200.58, IP address of Sophos Firewall WAN Port2, Original source: IP addresses of internal computers. Canwegetbacktofirewalls? Sophos Firewall requires membership for participation - click to join. Please copy it manually. The other side of the problem is that you could potentially be blocking content that should be allowed for others. is there a special NAT Rull? So"Internet"isnotpartof"Any",andneitheraremyexternaladdresses? For this example, check this box. This will ensure that traffic will be accelerated on the FastPath and not redirected through the DPI engine for unnecessary security scanning. 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. Forexample,toallowdevicesinaDMZtoaccessupdates,youwantanallowrulefor'DMZ(Network)->Any->Internet'traffic. When there are multiple WAN interfaces, we can use SD-WAN policy routing to specify primary gateway for LAN to WAN traffic. Destination Networks: Same idea as explained for Source Network and Devices except this where the traffic is specifically going to. Sophos XG Firewall: How to change firewall rule order 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. This week I jumped from a typical consumer grade box to an XG 125 running a home license. Scan FTP for Malware: Similar to what was already mentioned except for File Transfer Protocol (FTP) traffic. For this example, check this box. A linked NAT rule translates only the traffic that matches the settings of the firewall rule that its linked to. 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. Application Control: Same as above except for specific applications. This article describes how to use Sophos XG to block searches that contain specific keywords, such as 'Wallpapers', 'VPNs' or 'Bypass Firewall'. 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. 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. It couldnt be more straightforward and intuitive: simply identify the destination application networks (FQDNs) or services. 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. But as you have noticed, it brings confusion at the same time. Thank you for your feedback. The option WAN Link Load Balance gives you the ability to load balance outgoing WAN traffic. I'd also recommend anti-virus on your end points (computers) as another layer of security. or there is still a configuration that I missed,explanation pleasethank you. Interface matching criteria > Inbound interface: Port1, so that inbound traffic arrives Port1 will be checked against the DNAT rule. Traffic such as streaming media that is not active code-based is a perfect example of traffic that can be trusted. 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. Based on the traffic and risk level, you can enforce policy-driven connections and decryption for SSL/TLS traffic. And select None for Security Features and do not select any of the check boxes. It will remain unchanged in future help versions. In this example, it is 192.168.15.15, SNAT: public IP address of Exchange server, or IP address of Sophos Firewall Port6. Overwrite default NAT policy for specific gateway: If you have multiple gateways, this allows you to adjust the NAT policy for each gateway. Click Save at the bottom and youre finished! As you can see, it allows any host in your LAN zone to establish a connection with any host in the WAN zone (e.g. Sophos Firewall LAN interface Port1 connects to internal computer, and DMZ interface Port6 connects to internal Exchange server. Detect zero-day threats with Sandstorm: Unfortunately, the Sophos XG Home license does not include the Sandstorm service. 1997 - 2023 Sophos Ltd. All rights reserved. And of course, these communication and collaboration applications are among the most important in any business, which makes them ideal for FastPath acceleration. 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'. You can get the latest v18 release for your XG Firewall from MySophos. Rule Name: Type in a rule name that allows you to easily identify what this rule is for such as, Allow LAN to WAN. This example shows how to create a firewall rule with a linked NAT rule for outgoing traffic from LAN. external users --- Internet --- Port2 [Sophos Firewall] Port1 --- internal Exchange server (in DMZ zone). 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. Use this option if you dont want to manage a NAT rule table and a firewall rule table. Select New . Enabling this will require additional setup of certifications on your devices to allow Sophos XG to decrypt the encrypted traffic for scanning. If you had multiple gateways, this allows you to choose which gateway traffic would utilize for this firewall rule. 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. It is recommended to change this setting so that the Sophos Firewall sends ping requests to the default gateway as well as to multiple hosts on the internet that are permanently running such as 8.8.8.8 and 1.1.1.1, and will only declare the WAN link as down if all of them are ping unreachable. Sure, but it's all tradeoffs and network security is really a layered approach. 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. 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. You can create firewall rules for IPv4 and IPv6 networks. Click the On/Off switch to turn wireless protection on. The zones can be configured in the Zones tab on the Network page under Configure. If scanning HTTP(s) traffic is enabled, its recommended to enable this to force web traffic to use HTTP(s) thus being scanned. 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. Heres a couple of things to consider that may help. Block if the keyword is present in URLs using custom Web Categories. I am new to Sophos Firewall. Mydaywasgreat,thanksforasking. 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. 1. go to firewall webadmin > Rules and policies > Firewall rules, create a firewall rule to allow LAN to WAN traffic source zone: LAN, the zone internal computers locates source networks: Any, or specific internal subnet Destination zone: WAN Destination networks: Any Block if the keyword is present in the content of a page using Content Filters. The traffic shaping policy for each application can be set on the Applications page under the Traffic Shaping Default tab. 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. Note: When None is selected, packets will not go through the web proxy. 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. I'll start reading through it this evening. Your browser doesnt support copying the link to the clipboard. If a post solvesyourquestion please use the'Verify Answer' button. Sophos Firewall: Best practices Please contact Sophos Professional Services if you require assistance with your specific environment. 2014:09:23-09:09:49H-GATE3ulogd[4184]:id="2001"severity="info"sys="SecureNet"sub="packetfilter"name="Packetdropped"action="drop"fwrule="60001"initf="eth1"srcmac="0:26:88:75:cb:a3"dstmac="0:50:56:0:40:5f"srcip="80.93.221.248"dstip="144.76.60.28"proto="6"length="40"tos="0x00"prec="0x00"ttl="45"srcport="59581"dstport="445"tcpflags="SYN". You can implement policies, specify access for endpoint devices and servers, and prioritize traffic. Web server protection rules: You can configure WAF rules to protect . If that's the case, hats off to the development team. 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. Information on setting up various devices for everyday home use. SafeSearch is not possible using the DPI engine). 1. 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. Create a protection policy In this section, we will be creating two protection policies, one for Exchange Autodiscover and the other for Exchange Webservices. To make all of this work we need a Firewall rule that matches Google searches and then applies our web policy. Inbound traffic arrives Port2 will be checked against the DNAT rule. A firewall rule should work okay without a NAT. no problem", Shouldn't the network default policy be drop all? /24 .address range in the DMZ? Thank you. First, it is important to understand some of the limitations of blocking keywords in URLs. The firewall rule has to match the source zone, source network and devices, scheduled time, destination zone, destination network and services. The Network Flow FastPath can direct trusted traffic that doesnt require security scanning into the fast lane through the system. However, with users and/or groups setup, this allows you to apply the firewall rule to specific users and/or groups. If someone searches for 'wallpaper', the search is blocked. 2021-01-22, addedInterface matching criteria in section "WAN-to-DMZ traffic". This is a bit of a limitation for both inclusion or exclusion. Help us improve this page by, Create a firewall rule with a linked NAT rule, How to deploy Sophos Firewall on Amazon Web Services (AWS), Control traffic requiring web proxy filtering, Add a DNAT rule with server access assistant, UDP time-out value causes VoIP calls to drop or have poor quality, VoIP call issues over site-to-site VPN or with IPS configured, Audio and video calls are dropping or only work one way when H.323 helper module is loaded, How to turn the Session Initiation Protocol (SIP) module on or off, The phone rings, but there's no audio if you're using VPN or the Sophos Connect client, Add a Microsoft Remote Desktop Gateway 2008 and R2 rule, Add a Microsoft Remote Desktop Web 2008 and R2 rule, Add a Microsoft Sharepoint 2010 and 2013 rule, Create DNAT and firewall rules for internal servers, Create a source NAT rule for a mail server (legacy mode), Allow non-decryptable traffic using SSL/TLS inspection rules, Enable Android devices to connect to the internet, Migrating policies from previous releases, Block applications using the application filter, Deploy a hotspot with a custom sign-in page, Deploy a wireless network as a bridge to an access point LAN, Deploy a wireless network as a separate zone, Provide guest access using a hotspot voucher, Restart access points remotely using the CLI, Add a wireless network to an access point, Configure protection for cloud-hosted mail server, Set up Microsoft Office 365 with Sophos Firewall, Configure the quarantine digest (MTA mode), Protect internal mail server in legacy mode, Configuring NAT over a Site-to-Site IPsec VPN connection, Use NAT rules in an existing IPsec tunnel to connect a remote network, Comparing policy-based and route-based VPNs, Configure IPsec remote access VPN with Sophos Connect client, Configure remote access SSL VPN with Sophos Connect client, Create a remote access SSL VPN with the legacy client, Troubleshooting inactive RED access points, Configure Sophos Firewall as a DHCP server, HO firewall as DHCP server and BO firewall as relay agent, DHCP server behind HO firewall and BO firewall as relay agent, Configure DHCP options for Avaya IP phones, What's new in SD-WAN policy routing in 18.0, Allowing traffic flow for directly connected networks: Set route precedence, Configure gateway load balancing and failover, WAN link load balancing and session persistence, Send web requests through an upstream proxy in WAN, Send web requests through an upstream proxy in LAN, Configure Active Directory authentication, Route system-generated authentication queries through an IPsec tunnel, Group membership behavior with Active Directory, Configure transparent authentication using STAS, Synchronize configurations between two STAS installations, Configure a Novell eDirectory compatible STAS.

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