This structure is based on secure objects, which are utilized by rules and policies within SonicOS Enhanced. Although a Primary Bridge Interface may be appliance, see Network > Failover & Load Balancing By placing the SonicWALL in Layer 2 Bridge mode, the X0 and X1 interfaces become part of the same broadcast domain/network (that of the X1 WAN interface). In this scenario the SonicWALL UTM appliance is not used for security enforcement, but instead for bidirectional scanning, blocking viruses and spyware, and stopping intrusion attempts. Eg. If there are any problems, review your configuration and see the Configuring the Common Settings for L2 Bridge Mode Deployments section Connect and share knowledge within a single location that is structured and easy to search. Stateful packet inspection and transformations are performed for TCP, VoIP, FTP, MSN, Deep packet inspection, including GAV, IPS, Anti-Spyware, CFS and email-filtering is, If the packet is destined for the Encrypted zone (VPN), the Untrusted zone (WAN), or some, If the packet is not destined for the VPN/WAN/Connected interface, the stored VLAN tag, L2 Bridge Mode is capable of handling any number of subnets across the bridge, as described, Unsupported traffic will, by default, be passed from one L2 Bridge interface to the Bridge-, Comparison of L2 Bridge Mode to Transparent Mode, ARP is proxied by the interfaces operating, Hosts on either side of a Bridge-Pair are, Two interfaces, a Primary Bridge Interface, In its default configuration, Transparent, All non-IPv4 traffic, by default, is bridged, PortShield interfaces cannot be assigned to, Although a Primary Bridge Interface may be, VPN operation is supported with no special, Traffic will be intelligently routed in/out of, Traffic will be intelligently routed from/to, Full stateful packet inspection will applied. button at the top right of the Network internal Chromecast is connected to WLAN with IP address 192.xx.xx.99 CCTV Monitor (Windows 7) is connected to LAN via unmanaged switch on x1. LAN_1 is the default LAN, the SonicWall LAN IP is 172.16.1.1 The SonicWall has 5 interfaces. As It only takes a minute to sign up. . Is lock-free synchronization always superior to synchronization using locks? For example, an access rule that blocks IRC traffic takes precedence over the SonicWall security appliance default setting of allowing this type of traffic.This article lists the following configuration examples of access rules to be created for blocking incoming and outgoing traffic: This release includes significantuser interface changes and many new features that are different from the SonicOS 6.5 and earlier firmware. By default, the SonicWall security appliance's Stateful packet inspection allows all communication from the LAN to the Internet, and blocks all traffic to the LAN from the Internet.The following behaviors are defined by the DefaultStateful inspection packet access rule enabled in the SonicWall security appliance:Allow all sessions originating from the LAN, WLAN to the WAN, or DMZ (except when the destination WAN IP address is the WAN interface of the SonicWall appliance itself).Allow all sessions originating from the DMZ to the WAN.Deny all sessions originating from the WAN to the DMZ.Deny all sessions originating from the WAN and DMZ to the LAN or WLAN.Additional network access rules can be defined to extend or override the default access rules. they can be modified as needed. While Transparent Mode is capable of supporting multiple subnets through the use of Static ARP and Route entries, as the Technote http://www.sonicwall.com/us/support/2134_3468.html If there were public servers, for example, a mail and Web server, on the Get the pings started on the source computer and click on Refresh option in the packet monitor page to see the traffic. Interface Traffic Statistics Keep in mind I am no network engineer, but I am often forced to play that role. interface to X1. Please note that stream-based TCP protocols communications (for example, an FTP session communities including Stack Overflow, the largest, most trusted online community for developers learn, share their knowledge, and build their careers. Is there a way i can do that please help. It is also common for larger networks to employ multiple subnets, be they on a single wire, . To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Thanks for contributing an answer to Network Engineering Stack Exchange! What sort of strategies would a medieval military use against a fantasy giant? If it is windows from windows (or something similar) Windows Firewall might be getting in the way. Upon completion, the correct Access Rule will be applied to subsequent related traffic. page. (Server) segment from/to the Secondary Bridge Interface The SonicWALL HA pair consists of two SonicWALL NSA 3500 appliances, connected together interface. I have a few VLAN's in my Sonicwall but I can still ping devices from one VLAN to another. VLAN subinterfaces can be created and All rights Reserved. You may also need to modify routing information on your firewall if your PCM+/NIM server is placed on the DMZ. Bridge Mode that is used for intrusion detection. In the CFS) are fully supported from/to the subnets defined by Transparent Mode Address Object assignment. For example, access rules can be created that allow access from the LAN zone to the WAN Primary IP address, or block certain types of traffic such as IRC from the LAN to the WAN, or allow certain types of traffic, such as Lotus Notes database synchronization, from specific hosts on the Internet to specific hosts on the LAN, or restrict use of certain protocols such as Telnet to authorized users on the LAN.Custom access rules evaluate network traffic source IP addresses, destination IP addresses, IP protocol types, and compare the information to access rules created on the SonicWall security appliance. interface to X0. Features excluded from VLAN subinterfaces at this time are WAN dynamic client support and multicast support. I'm excited to be here, and hope to be able to contribute. . I'm stumped and could really use some help, please. Cable the X1/WAN port on the UTM appliance to the port where the SSL VPN was previously, If your SSL VPN appliance is in one-port mode in the DMZ of a third-party firewall, it is single-. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? I hope to control it using the Sonicwall firewall rules. other paths. In case if the access rules are already in place, we may need to enact packet capture on the firewall to trace the traffics between these interfaces and to rectify the issue. You can achieve this by adding access rules on the SonicWall from X0 Main LAN to X2 Phone LAN and X3 Another LAN and vice versa. The link was to deny WAN to LAN but i need to allow LAN to LAN. Is there a solutiuon to add special characters from software and how to do it. The Never route traffic on this bridge-pair rev2023.3.3.43278. The master LAN segment of your network this may sound wrong, but this will actually be the interface from which you manage the appliance, and it is also the interface from which the appliance sends its SNMP traps as well as the interface from which it gets UTM signature updates. rev2023.3.3.43278. Give a friendly comment for the interface. appropriate for IPS Sniffer Mode. Management The following sequence of events describes the above flow diagram: It is possible to construct a Firewall Access Rule to control any IP packet Address Objects Fortinet FortiGate vs Juniper SRX Series Firewall: which is better? Can airtags be tracked from an iMac desktop, with no iPhone? If the packet is disallowed, it will be dropped and logged. Login to the SonicWall management Interface. For Setup Wizard instructions, see VPN operation is supported with no special option on the Secondary Bridge Interface There are a couple rules set up to block traffic at lower priorities than the ones i've listed. Packard ProCurve switching environment. I think you need to add static routes to your Sonicwall so Route would be 10.189.102./24 next hop (or gateway) would be 10.189.101.1 (the L3 switch). While many other methods of transparent operation will only support IPv4 traffic, L2 Bridge Mode will inspect all IPv4 traffic, and will pass (or block, if desired) all other traffic, including LLC, all Ethertypes, and even proprietary frame formats. Domain. @JAlkazian - As per the capture, seems like only the ping request is happening via the SonicWall from 10.3.63.212 to 10.3.64.57 and there were no responses found. either interface of an L2 Bridge Pair. Alternatively if these are NOT really both part of the same Zone (security context) then either change one of the interfaces to a different Zone (eg. workstation or servers On the Sonicwall, only a NAT exemption and access rule should be needed. By default, the SonicWall security appliance's Stateful packet inspection allows all communication from the LAN to the Internet, and blocks all traffic to the LAN from the Internet.The following behaviors are defined by the Default Stateful inspection packet access rule enabled in the SonicWall security appliance:Allow all sessions originating The following information is displayed for all SonicWALL security appliance interfaces: To clear the current statistics, click the Why is this sentence from The Great Gatsby grammatical? WLAN zone becomes the secondary bridged interface, allowing wireless clients to share the same subnet and DHCP pool as their wired counterparts. To continue this discussion, please ask a new question. Zones are the hierarchical apex of SonicOS Enhanceds secure objects architecture. The gateway and internal/external DNS address settings will match those of your SSL VPN meaning that all network communications will continue uninterrupted. The X2 port is Layer 2 bridged to the LAN port but it wont be attached to anything. Click OK LAN to LAN firewall rules are set to permit all. I can not figure out how to do so. It simply confirmed everything I had already tried, it I started over anyway. How to follow the signal when reading the schematic? I tried the following: Source - 63 network (10.3.63.0/255.255.255.0 which is X3). The WAN interface of the SonicWALL is used to connect to the SonicWALL Data Center for By default the LAN Zone has Interface Trust enabled, which means all interfaces within the same Zone trust each other (pass traffic). Custom routes and NAT policies can be added as needed. This is an example of a deny rule.This section provides a configuration example of an access rule blocking some IP addresses on the Internet access to the LAN zone of the SonicWall. Making statements based on opinion; back them up with references or personal experience. rev2023.3.3.43278. Hosts on either side of a Bridge-Pair are setting, select X1 icon for the intersection of WAN to LAN traffic. This special port is set for mirror mode it will forward all the internal user and server ports to the sniff port on the SonicWALL. The following are sample topologies depicting common deployments. You're on the right track with the interfaces. Cable the X0/LAN port on the UTM appliance to the X0/LAN port on the SSL VPN appliance. the link does not talk about Multicast routing, but instead limits multicast to specific objects/groups. ARP is proxied by the interfaces operating A packet arriving on X3 (non-L2 Bridge LAN) destined for host 15.1.1.100 subnet. Once the routers ARP cache is cleared, it can then send a new ARP request for 192.168.0.100, to which the SonicWALL will respond with its X1 MAC 00:06:B1:10:10:11. I need to enable traffic between two different subnets connected to a SonicWall. GAV is primarily an Inbound service, inspecting inbound HTTP, FTP, IMAP, SMTP, Anti Spyware is primarily Inbound, inspecting inbound HTTP, FTP, IMAP, SMTP, POP3, IPS has three directions: Incoming, Outgoing, and Bidirectional. requirements. setting, select Layer 2 Bridged Mode Multicast traffic, with IGMP dependency, is On X4 Subnet, I can get to the Sonicwall admin page via both X0 and X4 interface address, but X4 cannot ping any other X0 addresses, and no X0 devices can reach X4 addresses. The following are sample topologies depicting common deployments. software packages can be used to manage the switches as well as some aspects of the SonicWALL UTM appliance. . I DMZ'd the Chromecast and it is in fact connecting. These VLAN subinterfaces can also be given Transparent Mode Address Object assignments, but in any event VLAN subinterfaces will be terminated rather than passed. to save and activate the change. packets with a log event such as TCP packet I set it up and still cannot ping from one PC to another but i can ping the interface gateway IPs both ways. networks to use VLANs for segmentation of traffic. VLAN traffic traversing an L2 Bridge. At the zone configuration level, the When programmed correctly, the UTM appliance will not interrupt network traffic, unless the behavior or content of the traffic is determined to be undesirable. For more information on zones, see This will remove the auto-added LAN<->LAN Allow ANY/ANY/ANY rule. information is unaltered. Unlike Transparent Mode, which imposes a system of more trusted to less trusted by requiring that the source interface be the Primary WAN, and the transparent interface be Trusted or Public, L2 Bridge mode allows for greater control of operational levels of trust. Since both interfaces of the Bridge-Pair are assigned to a Trusted (LAN) zone, the following will Why is pfSense blocking multicast traffic when it is explicitly enabled? This diagram depicts a network where the SonicWALL will act as the perimeter security device TL;DR: How can I allow a PC on x1 LAN 10.xx.xx.151 to cast to Chromecast on x4 WLAN 192.xx.xx.99? If, Consider reserving an interface for the management network (this example uses X1). For example, you have a router on your network with the IP address of 192.168.168.254, and there is another subnet on your network with an IP address range of 10.0.5.0 - 10.0.5.254 with a subnet mask of 255.255.255.0. Just as two physically distinct, disconnected LANs are wholly separate from one another, so too are two different VLANs, however the two VLANs can exist on the very same wire. IPS Sniffer Mode provides intrusion detection, but cannot block malicious traffic because the SonicWALL security appliance is not connected inline with the traffic flow. For reasons of security and control, SonicOS does not participate in any VLAN trunking protocols, but instead requires that each VLAN that is to be supported be configured and assigned appropriate security characteristics. to save and activate the changes. How to create a file extension exclusion from Gateway Antivirus inspection. The X0 LAN port is configured to a second, specially programmed port on the HP ProCurve switch. This includes IPv6 traffic, STP (Spanning Tree Protocol), and unrecognized IP types. L2 Bridge Mode provides an ideal solution for networks that already have an existing firewall, X0 is LAN interface (LAN_1) and X1 is WAN. In this instance, X0 and X2 will be able to communicate. Both interfaces are on the same "LAN" Zone with interface trust between them. It only takes a minute to sign up. Network access rules take precedence, and can override the SonicWall security appliance's Stateful packet inspection. Traffic will be intelligently routed in/out of Use any of the additional interfaces you have. In this deployment the WAN interface and zone are configured for the I want some controlled traffic flow between these subnets. Network > Zones Are you certain this is a firewall issue and not a switching/VLAN problem? I didn't think I should need a NAT policy for LAN to LAN traffic. How to create interfaces for CSR 1000v for GRE tunnels? The reason for this is that SonicOS detects all signatures on traffic within the same zone such managed in the Network > Interfaces Then access rules will be created to allow access between the default LAN zone and Printer zone but deny access from the LAN zone to the Server zone. traffic on the bridge-pair Every unique VLAN ID requires its own subinterface. Click OK For detailed instructions on configuring interfaces in IPS Sniffer Mode, see I haven't figured out yet why I can't get to the webserver on an AP on a different subnet yet though, so it might not be it. X0 is LAN interface (LAN_1) and X1 is WAN. interface. On the X2 Settings page, set the IP Assignment Thanks! Consider, for the point of contrast, what would occur if the X2 (Primary Bridge Interface), The DHCP server would be in the DMZ. checkbox should also be selected for IPS Sniffer Mode to ensure that the traffic from the mirrored switch port is not sent back out onto the network. IGMP only manages group membership within a subnet. DMZ) or create a new Zone. Cable the X0/LAN port on the UTM appliance to the X0/LAN port of the SSL VPN appliance. A server configured to run a limited number of services that acts as a single point of contact between the internet and the private network 10. You need to hear this. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. DHCP can be passed through a Bridge- Transparent Mode supports unique addressing and interface routing. . interface is always the Primary WAN. The benefits of this include: VLAN support on SonicOS Enhanced is achieved by means of subinterfaces, which are logical Physical interfaces must be assigned to a zone to allow for configuration of Access Rules to Visit Stack Exchange Tour Start here for quick overview the site Help Center Detailed answers. in at all), and connect X1 to the internal network. and was challenged. to be assigned to the same or different zones (e.g. OK All Ethernet traffic can be passed across an L2 Bridge, L2 Bridge Mode can concurrently provide L2 Bridging. icon for the LAN section of the SonicWALL security appliance Management Interface, and User objects are defined in the Users , independent of its VLAN membership, by any of its IP elements, such as source IP, destination IP, or service type. SonicWALL - 2 VPN subnets need to communicate, How can I create a static route between subnets on sonicwall, Topological invariance of rational Pontrjagin classes for non-compact spaces. ), Theoretically Correct vs Practical Notation. appliance should be placed between the X0/LAN interface of the SSL VPN appliance and the connection to your internal network. ability to provide logical rather than physical broadcast domain, or LAN boundaries. setting, select the HTTPS and Secondary Bridge Interfaces natively through the L2 Bridge. you can do so on the System > Administration I would like to allow traffic across X0, X2 and X3 to flow but for the life of me i cannot get it to work. There is no need to declare interface affinities. and Activating UTM Services on Each Zone Unsupported traffic will, by default, be passed from one L2 Bridge interface to the Bridge- All non-IPv4 traffic, by default, is bridged Traffic to/from the Primary Bridge LAN to LAN firewall rules are set to permit all. segment). This typically requires a flushing of the routers ARP cache either from its management interface or through a reboot. At present, these communications can only occur through the Primary WAN interface. Setup Wizard For example, a subnet can be created to isolate a section of a company network, such as finance, from network traffic on the rest of the LAN, WAN, or DMZ. I wanted to know if i can remote access this machine and switch between os or while rebooting the system I can select the specific os. It is also common for larger networks to employ multiple subnets, be they on a single wire, Transparent Mode will drop (and generally log) all non-IPv4 traffic, precluding it from passing, L2 Bridge Mode addresses these common Transparent Mode deployment issues and is, L2 Bridge Mode employs a learning bridge design where it will dynamically determine which, This behavior allows for a SonicWALL operating in L2 Bridge Mode to be introduced into an, Please note that stream-based TCP protocols communications (for example, an FTP session, On SonicWALL NSA series appliances, L2 Bridge Mode provides fine control over 802.1Q, This allows a SonicWALL operating in L2 Bridge Mode to be inserted, for example, inline into, 802.1Q encapsulated frame enters an L2 Bridge interface. I realized I messed up when I went to rejoin the domain MAC addresses natively traverse the L2 bridge. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? The interfaces displayed on the Network > Interfaces page depend on the type of SonicWALL appliance. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? page and click the Configure X0 has no VLANS, but X4 connects to an Extreme Networks managed switch with two VLANs (installed and configured by another vendor). Could you perform a packet capture on the SonicWall as shown below to trace the ping packets at SonicWall level? Thanks. Click on the, With this rule in place, the access from the X0 network and the X2 network is denied to the X3 network. Next, go to the The Sonicwall is not setting itself to that address. You can also use L2 Bridge Mode in a High Availability deployment. LAN+LAN, LAN+DMZ, WAN+CustomLAN, etc.) Configuring NATed site to site VPN's, blocking and allowing specific services and ports, setting up interfaces and VLAN's. Networking: Routing and Switching, TCP/IP, Nmap, Wireshark, Config . Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. can provide DHCP services, or they can pass DHCP using IP Helper. On the X0 Settings page, set the IP Assignment If more than two interfaces, PortShield interface may not operate within an L2 Bridge Pair. Important areas to consider when choosing and configuring interfaces to use in a Bridge-Pair are Security Services, Access Rules, and WAN connectivity: As it will be one of the primary employments of L2 Bridge mode, understanding the application If the packet arrives on a Bridge-Pair interface, it is sent to the Bridge-Partner interface. Simultaneously, it will provide L2 Bridge security between the workstation and server segments of the network without having to readdress any of the If you have routers on your interfaces, you can configure static routes on the SonicWALL. Transparent Mode, and is dropped and logged. Supported on SonicWALL NSA series security appliances, virtual Interfaces are subinterfaces switching environment. L2 (Layer 2) Bridge Mode Configuring X2 and X3 interfaces with appropriate IP addresses and ZonesOnce the zone for X3 is created, Navigate to Network |Interfaces. The web servers are located in Germany and are reachable through the IP address 23.88.7.135. Firewall Access Rules are applied to the packet. I've tried various combinations of Static Routes, NAT and Firewall rules, but I cannot get traffic to cross the different subnets. SonicOS Enhanced firmware versions 4.0 and higher includes Network > Interfaces This field is for validation purposes and should be left unchanged. segment) will generally be considered as having a lower level of trust than everything to the left of the SonicWALL (the Secondary Bridge Interface setting for zones automates the processes involved in creating a permissive intra-zone Access Rule. Edit Rule The default behavior is to allow all subnets, but Access Rules can be applied to control traffic as needed. This example refers to a SonicWALL UTM appliance installed in a Hewlitt Packard ProCurve Only the WAN zone is not I've tried different combinations of NAT policies, but may not have gotten it right (original/translated source, inbound/outbound interface, etc). of security services is important to the proper zone selection for Bridge-Pair interfaces. Another aspect of the versatility of L2 Bridge Mode is that you can use it to configure Enable the management if needed and click, Give an IP address as per your requirement. Yeahit is working. Multicast is enabled for all objects on LAN and WLAN Relevant Firewall rules: Flashback: March 3, 1971: Magnavox Licenses Home Video Games (Read more HERE.) This topic has been locked by an administrator and is no longer open for commenting. In short you need to allow multicast routing on the firewall. I am unable to ping it. homed. LAN is 10.xx.xx.xx on Interface x1 WLAN is 192.xx.xx.xx on Interface x4 There is a wifi access point on WLAN plugged directly into x4. In most cases, the source would be set to Any. And is it on a correct VLAN? By default the LAN Zone has Interface Trust enabled, which means all interfaces within the same Zone trust each other (pass traffic). Alerts can trigger SNMP traps which are sent to the specified SNMP manager via another interface on the SonicWALL. Multicast is enabled for all objects on LAN and WLAN, LAN > MULTICAST, Any source to Any destination, Any service, Allow, LAN > WLAN, Any source to any destination, Any service, Allow, WLAN > MULTICAST, Chromecast to Any destination, IGMP, Allow, WLAN > MULTICAST, Any source to Any destination, Any service, Deny, WLAN > LAN, Chromecast to All Workstations, Any service, Allow. In other words, only those VLANs which are defined as subinterfaces will be handled by the SonicWALL, the rest will be discarded as uninteresting. This example is for SonicWALL NSA series appliances, and assumes the use of switches with VLANs configured. How do particle accelerators like the LHC bend beams of particles? Most of the entries are the result of configuring LAN and WAN network settings. can be given Transparent Mode Address Object assignments, but the VLANs will be terminated by the SonicWALL rather than passed. and conventional security appliance services, such as routing, NAT, VPN, and wireless operations. Configuring IPS Sniffer Mode Did any DOS compatibility layers exist for any UNIX-like systems before DOS started to become outmoded? Virtual interfaces provide many of the same features as physical interfaces, including zone CCTV Monitor (Windows 7) is connected to LAN via unmanaged switch on x1. Blocking IP addresses on the WAN access to the LANBy default all traffic from the WAN are denied access to the LAN, DMZ or any other zone. . physical interfaces operating in Transparent Mode, but their mode of operation will be independent of their parent. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. and a Secondary Bridge Interface. The below resolution is for customers using SonicOS 6.5 firmware. What are some of the best ones? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The best answers are voted up and rise to the top, Not the answer you're looking for? By default in the TZ devices, additional interfaces (X2 and above) are port shielded to X0 and are hidden. Login to the SonicWall management Interface. If your SSL VPN appliance is in two-port mode behind a third-party firewall, it is dual-homed. The default Access Rules should be considered, although It is not dependent upon IGMP messaging, nor is it necessary to enable multicast support on the individual interfaces. interface. The following summary describes, in order, the logic that is applied to path determinations for these cases: In this last case, since the destination is unknown until after an ARP response is Any guidance would be most appreciated. govern inbound and outbound traffic. Malicious events trigger alerts and log entries, and if SNMP is enabled, SNMP traps are sent to the configured IP address of the SNMP manager system. This option is only to be used when the secondary subnet is accessed through an internal (LAN) router that is between it and the SonicWALL LAN port. But here is the thing, I want the machines to see each other directly, if allowed through the rules. Broadcast traffic is passed from the So it appears this is the rule that allowed it to function. What am I missing? This is because only the Primary WAN interface can be used as the source Base your decision on 30 verified in-depth peer reviews and ratings, pros & cons, pricing, support and more. IPS Sniffer Mode configuration allows an interface on the SonicWALL to be connected to a mirrored port on a switch to examine network traffic. . Why should transaction_version change with removals? page, click Configure To configure the LAN interface settings, navigate to the The X0 interface on the SonicWall, by default, is configured with the IP 192.168.168.168 with netmask 255.255.255.. Asking for help, clarification, or responding to other answers. Go to Network, Zones, and Edit the Zone in question (LAN) and remove the checkmark from Allow Interface Trust. Firewall Access Rules can also, optionally, be applied to all VLAN traffic passing through the L2 Bridge Mode because of the method of handling VLAN traffic. introduced into an existing network without the need for re-addressing, it presents a certain level of disruptiveness, particularly with regard to ARP, VLAN support, multiple subnets, and non-IPv4 traffic types. allowed is limited only by available physical interfaces. What I mean is I want no NAT translation. a VLAN trunk carrying any number of VLANs, and to provide full security services to all IPv4 traffic traversing the VLAN without the need for explicit configuration of any of the VLAN IDs or subnets. This scenario is explained in the Layer 2 Bridge Mode with High Availability section Multicast traffic is inspected and passed If you do not have SonicWALL UTM security services subscriptions, you may sign up for free trials from the Security Service > Summary
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