Pfsense multicast routing
Routing is the mechanism that allows a system to find the network path to another system. The route indicates that when trying to get to the specified destination, send the packets through the specified gateway. There are also three types of gateways: individual hosts, interfaces, also called links, and Ethernet hardware MAC addresses. Known routes are stored in a routing table. This section provides an overview of routing basics. It then demonstrates how to configure a FreeBSD system as a router and offers some troubleshooting tips.
To view the routing table of a FreeBSD system, use netstat 1 :. The first route in this table specifies the default route. When the local system needs to make a connection to a remote host, it checks the routing table to determine if a known path exists. If the remote host matches an entry in the table, the system checks to see if it can connect using the interface specified in that entry.
If the destination does not match an entry, or if all known paths fail, the system uses the entry for the default route.
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For hosts on a local area network, the Gateway field in the default route is set to the system which has a direct connection to the Internet. When reading this entry, verify that the Flags column indicates that the gateway is usable UG. The default route for a machine which itself is functioning as the gateway to the outside world will be the gateway machine at the Internet Service Provider ISP. The second route is the localhost route. The interface specified in the Netif column for localhost is lo0also known as the loopback device.
This indicates that all traffic for this destination should be internal, rather than sending it out over the network. The addresses beginning with 0:e0: are MAC addresses. FreeBSD will automatically identify any hosts, test0 in the example, on the local Ethernet and add a route for that host over the Ethernet interface, re0.
This type of route has a timeout, seen in the Expire column, which is used if the host does not respond in a specific amount of time. When this happens, the route to this host will be automatically deleted.
These hosts are identified using the Routing Information Protocol RIPwhich calculates routes to local hosts based upon a shortest path determination. FreeBSD will automatically add subnet routes for the local subnet.
In this example, The designation link 1 refers to the first Ethernet card in the machine. Local network hosts and local subnets have their routes automatically configured by a daemon called routed 8.
If it is not running, only routes which are statically defined by the administrator will exist. The host1 line refers to the host by its Ethernet address. Since it is the sending host, FreeBSD knows to use the loopback interface lo0 rather than the Ethernet interface. The two host2 lines represent aliases which were created using ifconfig 8. Such routes only show up on the host that supports the alias and all other hosts on the local network will have a link 1 line for such routes.After installing a new pfSense box in place of my old router my set-top box is not able to connect to the multicast group.
I've tried to google the error that it gives as well as tried every method I've found to let IPTV and multicast through pfSense. My family has been without TV for a few days now so all help is appreciated. Can you be more specific about how it works? Is the iptv on a different VLAN to your internet or is it all the same thing? On the firewall I assume you have the default allow any to any rule? If you do edit that rule and go to advanced options then check the box for 'allow IP options'.Making Air Print Work Between VLANs / Interfaces on FortiGate
I fiddled with the NAT options, posted here and got responses, disabled port scrambling, firewall settings, and all that and I still couldn't get in other people's games. We have 3 people in the house playing the game at the same time, trying to get into the same lobby. We never tried with just one person, but I dinked around with it for a few weeks and came up with nothing. I miss everything else about PFSense, but I think it might not deal with poorly written protocols well.
This may be a design decision or videogame testing not being a priority for enterprise software. Either way, GTAV killed it for me. Keep trying, but it wasn't worth the hassle for me to fiddle with shit for hours just to play games.
Probably not as secure, definitely missing some convenience and flexibility, but if the fucking thing works that's all that matters. Go into your Firewall logs and turn on the 'Log packets matched from the default block rules in the ruleset' this will help you find anything being blocked make sure to turn it off when you are done. I did then when I was having issues with my Chromecast not working after installing pfsense worked out I needed to allow Return to Level1Techs.
Hosts from either subnet can access external resources. However, I would also like the pfSense to route traffic between the two subnets.
And here things get tricky: I can ping between subnets, but attempts at a TCP connect from a host on subnet A to a target on subnet B will time out. I don't exactly know what causes Host A to ignore route settings and bypass the default gateway — however, all of this would not be an issue if I had just a plain router. I'd rather not rely on a particular behavior of an OS but build the infrastructure in a tolerant way — hence I want routing between the two networks to work even if the pfSense sees just one direction of the traffic.
Since both LAN subnets have the same level of trust, no filtering between them is required. How can I turn off any and all filtering between the two subnets on the pfSense? I have tried setting "State Type" to "None", but to no avail As mentioned above, it is no longer an issue for me, but I have come across a potential solution:. As of version 2.
Checking this option will disable any filtering for traffic that enters and leaves on the same interface, aimed specifically at a scenario with multiple subets on the same interface. I haven't tested it out as the lab environment in which I needed this has by now been dismantledbut maybe it helps someone else Sign up to join this community. The best answers are voted up and rise to the top.
Home Questions Tags Users Unanswered. Asked 5 years, 11 months ago. Active 5 years, 5 months ago. Viewed 51k times. This time, however, the communication passes back through the pfSense. Since I haven't found an answer, I ended up separating the two subnets and adding a dedicated router.
The BSDRP box has routes to either subnets and a default route to the pfSense, so that no internal traffic is ever routed through the pfSense. Separating the networks is probably not required, as BSDRP is more likely to tolerate the kind of "one-way" routing that pfSense rejects.
Active Oldest Votes. As mentioned above, it is no longer an issue for me, but I have come across a potential solution: As of version 2. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.
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It only takes a minute to sign up. These are on a different ip network, but still generate multicast packets. For the life of me, I cannot get pfSense to allow the packets. I tried using the easy rule button, but that failed. I also added a rule that allows all ports, all addresses with a destination of the multicast address, and enabled "allowopts" and "nostate"; all to no avail. The traffic is still stopped by the default rule.
Any idea what I might be doing wrong? Here is a shot of the rules and yes, they've been reloaded a few times:.
Configuring VLANs on pfSense
I've also tried "no state. Here is the log showing the rejection by the default rule:. It's worth noting that it originally showed the scrubbing rule was also blocking, so I disabled the packet fragment scrubbing.
Your rule's IP address seems to be incorrect : The firewall rule IP should probably be allowing multicast traffic from Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Why is pfSense blocking multicast traffic when it is explicitly enabled? Ask Question.
Asked 7 years, 8 months ago. Active 7 years, 7 months ago. Viewed 20k times. Here is a shot of the rules and yes, they've been reloaded a few times: I've also tried "no state. Here is the log showing the rejection by the default rule: It's worth noting that it originally showed the scrubbing rule was also blocking, so I disabled the packet fragment scrubbing. Bryan Agee Bryan Agee 1, 2 2 gold badges 10 10 silver badges 26 26 bronze badges.
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And despite all the effort and searching internet, I did not manage. Both problems are related to broadcast and multicast traffic. And one thing is for sure it is absolutely not clear to me how pfSense is dealing with multicast.
So let me describe the situation and related my questions a bit further below. Let start to mention that you can have broadcasts with a couple of different scopes:. No idea how. Then there is the issue of how to define the related FW-rules. A normal unicast rule has a source a destination a port and voila. Not clear to me what it is doing and when it is exactly needed. I did create a bug-report for that. But Netgate did react, you should not use that rule on local interface.
That may be partly true, but IMHO it is definitely a bug anyway. A little bit apart from this but related, not to be discussed here should be separate subject, are IMGP-proxi and Avahi. It uses UDP as the underlying transport protocol. Services are announced by the hosting system with multicast addressing to a specifically designated IP multicast address at UDP port number In IPv4, the multicast address is I did not manage. I'm having difficulty understanding what you're saying here.
However, on IPv4, broadcasts are normally not passed by a router and don't even exist on IPv6. Multicasts take place in a block of addresses, many assigned to common uses. A router has to be configured either automatically or manually to pass them.With load balancing, traffic from the LAN is shared out on a connection-based round robin basis across the available WANs.
With failover, traffic will go out the highest priority WAN until it goes down, then the next is used. Before starting, make sure all of the WAN-type interfaces are enabled.
For every gateway there are some settings that can change their behavior slightly with respect to multi-wan usage. Most people can leave these set at the defaults, but others may need to alter them slightly based on the quality of their WAN.
By default, pfSense software will ping the gateway to determine the quality of the WAN. In some cases, that is not an accurate measure. For instance, if the WAN gateway is actually a device that is local and not on the other side of the ISP circuit, then the actual WAN link could be down and pinging the gateway would never show it.
Also, if the ISP gateway is up but the ISP experiences upstream failures, those cannot be detected by pinging only the gateway. By default all WANs on the same tier are considered equal when doing load balancing. If the WANs are different speeds, the weight parameter allows the system to give some bias toward a faster link. If one is a 50Mbit line and another is a 10Mbit line, sharing them equally is not desirable as it would often leave the 50Mbit line underloaded and the 10Mbit line overloaded.
The 50MBit line can be given a weight of 5 so that there is a ratio of usage to prefer the faster WAN. Some WANs have low latency and no loss and are great, others perform normally even when there is some loss registered on the line or higher latency. These fields can be used to dial in link-appropriate values for what is actually an alarm state for the WAN gateways. On some lossy cable lines, increasing the loss percentage to 20 or more may be fine.
On slow DSL or satellite links, a few hundred ms of latency is fine. They group together gateways to act in a coordinated fashion. They can perform load balancing, failover, or a mixture of the two.
A common practice for a two-WAN setup is to make three gateway groups for a multi-wan configuration: one that load balances, and two for failover, one preferring each WAN.We have about Aastra i phones some of which will lie on each different subnet. Are multicast packets treated the same as broadcast? Are multicasts treated like broadcasts sorry but no. You need an IGMP proxy service running on your router to forward these datagrams.
You also need to have the rules setup correctly in the firewall for forwarding too. Here is a thread that talks about what you need for pfSense 2.
There is a section that talks about igmpproxy daemon and its config file. Thanks the conclusion I came to as well, thanks for the thread that will come in very handy. I'll update once I've had a chance to test.
To continue this discussion, please ask a new question. Get answers from your peers along with millions of IT pros who visit Spiceworks. My question and problem is this: We have about Aastra i phones some of which will lie on each different subnet. Or is this something I need some type of proxy for?
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