Access modem on wan from lan on pfsense 2.2 rc



  • new user to pfsense here, and have hit a bit of a stumbling block: accessing modems on wan from lan. i went through the instructions for 2.0 but they do not work for 2.1.5.

    my setup is as follows:
    modem 1: interface em0, ip of 10.0.1.1
    modem 2: interface em1, ip of 10.0.2.1

    lan is 10.0.0.1-255

    i could use a step by step guide post of what actually works. thanks will be given!

    edit: now on 2.2 rc because apinger decided it wasn't going to work on 2.1.5 anymore for no apparent reason after working fine since install, guide on wiki is even less helpful now and needs a rewrite. that said otherwise 2.2 is working really nicely (including a now properly working apinger, meaning load balancing is now reliable woooooooo)

    edit 2: guide is right, however in my case i needed an additional any any firewall rule to make it work that wasn't mentioned. many thanks to the fine fellow below who put time aside to help me out on this :)


  • Rebel Alliance Global Moderator

    So pfsense gets say 10.0.1.2/24 on emo, and 10.0.2.2/24 on em1

    What is mask on your lan?  you sure its /24?  If not your prob overlapping.

    If the above is the case you should have no issues access 10.0.1.1 or 10.0.2.1 it is simple routing, unless you have nat turned off on pfsense and your modems don't have routes back to 10.0.0/24



  • yes, i have lan bridge (so i can have multiple ports on same subnet) set to /24


  • Rebel Alliance Global Moderator

    Huh??  what does that have to do with the question or what mask you use?

    Dude you should have no problems accessing anything connected to interfaces of your pfsense.  Be it a modem or PC or another router, etc..

    modem 1: interface em0, ip of 10.0.1.1
    modem 2: interface em1, ip of 10.0.2.1

    What is the IP of the modem your trying to access?  I take it from your above statement that pfsense em0 interface 10.0.1.1/24 and em1 is 10.0.2.1/24  Or is that the IP of the modem.. What is the IP of pfsense on those interfaces?

    And are you natting or not natting?  Please validate what the IP of your modem is, and what the IP of your pfsense connected to that modem.



  • ip of those interfaces to the outside world is my public ip addresses (modems are transparently bridged)

    modem 1 is 10.0.1.1 and modem 2 is 10.0.2.1

    nat is on


  • Rebel Alliance Global Moderator

    Well then you have to put a vip on those interfaces so pfsense knows that those networks are there..



  • @johnpoz:

    Well then you have to put a vip on those interfaces so pfsense knows that those networks are there..

    just tried that, no dice

    also tried what is listed for 2.0 here: https://doc.pfsense.org/index.php/Accessing_modem_from_inside_firewall
    again no dice

    perhaps i'm missing something


  • Rebel Alliance Global Moderator

    And did you create outbound nats for the vip?  You sure those IPs work, have you connected something else to them.. Are you using PPoe connection in pfsense?

    What modems do you have?  This is simple enough lab up..  But I have a sb6120 cable modem, its gui IP is 192.168.100.1.  Pfsense wan via dhcp gets a 24.13.x.x address from isp - I don't have to do anything and can get to gui.

    What type of vip did you setup?  I can duplicate your setup in a lab and validate everything that needs do be done on pfsense.



  • @johnpoz:

    And did you create outbound nats for the vip?  You sure those IPs work, have you connected something else to them.. Are you using PPoe connection in pfsense?

    What modems do you have?  This is simple enough lab up..  But I have a sb6120 cable modem, its gui IP is 192.168.100.1.  Pfsense wan via dhcp gets a 24.13.x.x address from isp - I don't have to do anything and can get to gui.

    What type of vip did you setup?  I can duplicate your setup in a lab and validate everything that needs do be done on pfsense.

    i did create manual outbound nats for the vip, and i'm sure those ip's work (they worked in previous router with a command, nad i haven't changed modems between setups). i am using pppoe connection in pfsense, correct.

    i have two different modems, one is a d-link dsl2320b, the other is an actiontec gateway from old isp set in dumb modem mode. as for vip setup i created new opt interface, selected that interface in the vip setup and pointed it to modem address (10.0.1.1). i then set that up under translation on the outbound rule pointed to the opt interface as instructed via the guide.

    p.s.: following that guide also nets me losing all connectivity on that port if that's a hint to anything (ip is lost and gateway status shows lost for wan connection) edit: dealt with this issue, still no luck getting to modem, but at least i figured out a bit more about how the firewall works


  • Rebel Alliance Global Moderator

    "i am using pppoe connection in pfsense"

    Well then you don't do the vips

    https://doc.pfsense.org/index.php/Accessing_modem_from_inside_firewall

    On 2.0, a PPPoE WAN is actually assigned to a virtual PPPoE adapter, not the physical port. So the tricks above are not needed and the NAT portion will not work at all.

    If you already added the IP alias, remove it. If you added the IP alias via the shellcmd trick above, remove it also.

    Instead, under Interfaces > (assign), create a new OPT interface, and assign it to the physical network card that is on WAN. For example, if your WAN on the assignment page is "PPPOE0(fxp0)", choose fxp0, and Save your changes.

    Go to Interfaces > (your new OPT interface), and enable the interface. Give it an IP address in the same subnet as your modem, such as 192.168.1.5/24 (For example, the same IP address suggested in for the alias in the previous instructions). Do not set a gateway. If you like, you can rename the interface to something like ModemAccess.

    Add an Outbound NAT rule as described above but do NOT choose the WAN interface, choose your new OPT interface.

    You should then be able to access the modem from LAN.

    –-
    Should prob updated that info - if your creating OPT interfaces there would be no rules on it.  So you would have to create rules to allow you access.  Oh wait your outbound access to the modem should work.  and then return would be via state.  Rules on that connection would be needed if you wanted your modem to initiate traffic.



  • tried skipping making vip's, no change  :(


  • Rebel Alliance Global Moderator

    So do a sniff on the interface you create - do you see the traffic go out or not?



  • updated to 2.2rc today to resolve broken apinger (needed for multi wan/load balancing to work right), in the process noting why i was having problems before with the firewall: when i set to manual rules it locks in my public ip addresses in the nat rules. i cannot do this because i have dynamic ip addresses meaning every reboot i would have to fiddle with nat. hybrid mode in 2.2 also doesn't work because it tries nating the created interface to public ip address. i'm thinking the guide for this is going to need rewritten because none of it works at all in 2.2, and it can't be used with dynamic ip's that change every login in any version of pfsense.


  • Rebel Alliance Global Moderator

    Huh??  I think your not understanding the process of creating an opt interface connected to your wan.  You don't need to create any nats for this..

    You stated your PPPoE right - so while that IP can change whenever.  It has nothing to do with your rfc1918 address space on your modem.

    Your not putting a gateway on this new interface - so its not a wan, and would not be doing nat.  Its just like another lan segment. Your creating an OPT interface tied to your physical wan interface connected to your modem, putting a pfsense IP on it in a specific network.

    You don't nat between lan segments.  See drawing attached.

    Once you create your opt interfaces connected to the physical interfaces your modems are on - you just put a IP that interface that is on same network as your modems local IP.  PFsense would then route traffic to those networks.  You would only need to make sure that your lan rules allow the traffic to those network segments, which the default any any would do.




  • assuming by talking about the default any any you mean the anti-lockout rule that is created, then i have tried what you suggested (i checked for connectivity to modem after every step in the 2.0 guide, including just creating an opt interface with an ip in range of the modem) and it isn't working for me.


  • Rebel Alliance Global Moderator

    What dude – no not the anti lock out rule..  What are your rules on your lan segment?

    If its not working, then your modem doesn't have a gateway to talk back to your other network would be my guess..  In that case you would have to nat..  This is not rocket science -- its just like putting another lan segment on your network.  And simple routing.  For the modem to talk to 10.0.0.0/24 it would need to know that it needs to talk to pfsense IP on the 10.0.1.0/24 segment.

    If your modem on 10.0.1.1/24 does not know how to get to 10.0.0.14/24 then you would have to nat.  But again this has nothing to do wth any IPs changing.  So can pfsense ping your modems 10.0.1.1 address from its 10.0.1.2 IP on its opt interface you created?  If so and your client can not talk to it, then you most likely need a nat.

    If pfsense can not ping it - then you have something else wrong - like modem is not on the IP you think it is, you have not created the interface correctly on pfsense, etc..

    Lets see pfsense pinging the modem, then lets see your nat setup.  Keep in mind you would be natting to the your opt interface(s) you created.



  • sorry, whilst i am good with some areas of networking, i am not with others xD

    here is a screenshot of my lan rules (bridge is a combination of 3 ports to be on the same subnet): https://i.imgur.com/POG6VvO.png

    LB in the second entry is redirecting traffic towards a gateway group that does load balancing between my incoming two wan connections.

    as for modem ip's, i know they are right (i was just down in basement a couple days ago to check on some things manually) and i have to manually assign ip's in linux on laptop to gain access to modem when directly plugged in. as for rules on the modem there aren't any, but considering that i can access modems fine when using laptop with merely a manual ip assignment on the laptop i don't think they need any.

    as for pinging, i have not been able to ping either modem from my desktop.

    p.s. i apologize for seeming like a noob, i'm just trying to piece together why exactly it isn't working as it should be (i'm sitting here scratching my head a bit).


  • Rebel Alliance Global Moderator

    Bridge???  Dude you said nothing of a bridge.. WHY do you have a bridge setup?  Pfsense is a ROUTER, if you need to switch ports then use a switch..  I really can see no reason to ever create a bridge.

    And who said anything about pinging from your desktop.. SSH to pfsense, and ping the modem IP from there.  Or use the gui diag, ping

    Until pfsense can ping the modems you can not expect anything behind pfsense to be able to do it.  If you want - setup team viewer and I will remote in and fix it.  This really is 2 minutes of setup.

    Once you assign an opt interface to the physical interface connected to your modem.  You put an IP on it in the same segment as your modems IP, since your modem does not have route or gateway to get from its 10.0.1/24 network to your lan 10.0.0/24 network you would need to nat traffic coming from 10.0.0/24 to the opt interface on the modems segment.



  • reasoning behind bridge is for bandwidth: one lan port provides 1Gbps each way, which would be a bottleneck between devices (many gigabit computers, ac router in ap mode, and a deca bridge (directv stuff), so i put a bunch of ports on a bridge so each of the above three gets it's own dedicated bandwidth from the router, unless you know of a 10gig fiber switch that isn't mega expensive.

    i can pm you teamviewer info if you wish, what would a good time be (following est)?


  • Rebel Alliance Global Moderator

    So your wan is 3gig?  your lan port on your router doesn't do anything unless going to the wan..  So yes your lan port should = or exceed your wan bandwidth.  So you have a multi gb wan connection?

    How does interfaces 3 gig interfaces in a bridge = 10gig fiber switch?

    If you need more bandwidth or you want failover for an interface you would LAGG them..
    https://doc.pfsense.org/index.php/LAGG_Interfaces

    I am in Chicago area so Central time for me - I don't have any thing planned today.. On vac til end of the year – yeah!!  So PM the info, we can exchange personal email and we can chat over the teamviewer.  But until you can get pfsense to ping your modems, nothing behind pfsense is going to be able to get to them.



  • wan is 2 3Mbps/768kbps (down/up) connections. it's more for inter lan stuff than anything else. as for the fiber switch thing 3Gbps is more than 1Gbps. and i wish i had multi gig incoming, but then i probably would be just using the ac router i got with a not crappy firmware, and would not be here.

    as for lagg, the load balancing i do is a basic round robin thing with no isp end support (ie: throw things onto whichever connection and go). also, going into lagg only shows one interface (em0/wan1), so i don't think i could program it right either.

    teamviewer stuff will be pm'd momentarily.


  • Rebel Alliance Global Moderator

    What??  you have a 3mbps connection on the wan.. WTF you trying to use 3 gig connections to your router for??  Complete pointless!!

    Draw up this network where you think 3 interface in a bridge is buying you anything??  When your internet connection is 6mbps total??


  • Rebel Alliance Global Moderator

    Dude I pinged and emailed, nobody on machine - but you had password saved for pfsense.  So fixed it for you.  All of 1 minute

    So you had no firewall rule off your bridge (10.0.0/24) to allow traffic to 10.0.2/24 - you were sending all traffic to your GW with your rules.. I mentioned if you had default any any rule you would already allow this traffic.

    Also you had no nat created for your opt interface on em1 so modem would not know how to get back (unless it had a gateway of your 10.0.2.5 address on pfsense or route to 10.0.0/24, so created that for you.

    Do the same thing for mdm1 on em0, but would really like to discuss why you think bridging makes sense??

    I waited dude and pinged you, hope you don't mind that I fixed it for you.  I did not look or touch anything else..  The instructions are fine as written in docs, maybe some clarification of having to have rules that allow the traffic, and if device your trying to talk to doesn't have route back to your other lan you have to create a nat on that interface.. But to be honest this all pretty basic stuff.

    Let me know when you want to discuss your bridge setup, I just can not see how that would ever make sense to do ;)








  • @johnpoz:

    What??  you have a 3mbps connection on the wan.. WTF you trying to use 3 gig connections to your router for??  Complete pointless!!

    Draw up this network where you think 3 interface in a bridge is buying you anything??  When your internet connection is 6mbps total??

    perhaps this example will show what i mean: transferring multiple large files from lan to wireless (ac 1900 ap), then streaming a video from sat equipment to tablet (or from internet for that matter). that would total over the 1Gbps that the link from the router to the switch has.

    as for accessing modem, it looks like i was doing it right, but just not creating the firewall rule (guide never mentioned this). (the nat thing wasn't there when you got on because i was a tad confused, but the first time around i did have one there).

    another thing about me is i'm more of a hands on learner, and learn stuff well when doing trial and error and reverse engineering what someone has done to understand how it ticks.


  • Rebel Alliance Global Moderator

    "transferring multiple large files from lan to wireless (ac 1900 ap), then streaming a video from sat equipment to tablet (or from internet for that matter). that would total over the 1Gbps that the link from the router to the switch has."

    Well 1900 is total for both bands, so your not getting 1900 mbps ;)  Also how many streams does wifi client have?  Are you on the 2.4 or 5 band, are you using 20, 40 or 80mhz channels.  Just because your AC does not even mean you clients are, etc..  Sorry but wifi just doesn't do gig..  AC 5 with 80mhz 3x3 client I see real world about 500, maybe 600 with 1300 data rate connection.

    As to from the internet to anything - yes that would use the lan port of pfesnse..  But that 1,000,000,000 bps, your internet total is 6,000,000

    You do undstand everything talking to each other on the switch use their own path through the switch.. You sending to pfsense is slowing it down!!!  pfsense for one sure isnt forwarding packets at wire speed in a bridge.. ;)  And your forcing traffic through its interface that really never should go there.

    You have a gig switch. Connect your devices to the gig switch.. It should have a backplane of double its ports..  So for example my sg300 with 10 ports has a 20GB backplane - it can switch 20GBs of traffic at the same time.  It was designed to "switch"  pfsense is meant to route - completely different!!

    The only thing that goes to pfesnse would be traffic to or from the internet.  Traffic between devices on your network would never even talk to pfsense, other than maybe for dns, etc..

    Here is how you should have your network setup.  See attached.  When devices talk to each other they go through the switch at full wire speed between each other, they do not even need to talk to pfsense.  Pfsense is only gateway OFF that local network - ie the internet, you only have 6mpbs to the internet.  The gig connection pfsense has on its lan is more than enough to handle that.  If you were printing for example - that doesn't even go through pfsense, if you were watching a movie on your tablet off your dvr/mediaplayer that is full speed between those devices.  Whle your laptop is using the internet for example - those converstations have nothing to do with each other and the switch can handle it without any problems at full speed.

    You do understand you can get a gig switch for pennies ;)  If you don't have one
    http://www.amazon.com/TRENDnet-Unmanaged-Gigabit-GREENnet-TEG-S80g/dp/B001QUA6RA
    8 Port gig switch $29 to your door!

    You putting traffic through a bridge is only going to slow it down in the big picture.

    So would love to see way your network is physically connected, so we can go over the different paths and bandwith, etc.




  • eh, i might end up doing it your way eventually. if you really want to see a pic that is the mess of cables going all over i can do that. (will also include a visio drawing if i do this because it will look neater)


  • Rebel Alliance Global Moderator

    visio, paint, crayon and napkin that you take picture of with your phone..  Some sort of diagram that shows your connection.  As I said before it would be RARE that you would ever use a bridge..  There just really is not reason for it these days.

    Only time I would think you might do it is when different media types - say you had a fiber card in pfsense and you wanted this fiber network to be on the same network as your normal copper network.  In that case you might leverage pfsense to bridge your fiber network to your copper network.

    But it would not be best choice - best choice would be to add a fiber connection to your switch where your copper is, etc.

    I really can not think of when it would be good idea to bridge vs use a switch to be honest.

    Did you get your other modem working.  If not I can TV in again and fix it up.



  • i got other modem working once i looked at what you did (and namely the firewall rule that you added). i'm a bit new to pfsense, closest thing i've used to it before would be dd-wrt but that's miles behind what pfsense can do

    (links because forum ![](resizer is broken)<br />here's images of setup: https://i.imgur.com/xMenQdj.jpg | https://i.imgur.com/ZDlTEkT.jpg<br /><br />and here's a dia drawing to follow along with: https://i.imgur.com/IY8VJSx.png)


  • Rebel Alliance Global Moderator

    Yeah that setup makes no sense..  If you want to leave your AP connected, I would put it on its own segment so you can firewall your wifi from the rest of the network.  Your sending all your broadcast/multicast traffic out your wifi for no point.  And you have no security between wifi and your wired unless your wanting to to be transparent?

    If you want it on the same broadcast domain then just plug it into the switch.

    As to the deca, again pointless to bridge it to your lan.  Why not put that on its own segment as well if you want to have better setup and you have the interfaces..  It is only 100mbps connection as well - what does it talk to on your network?  If it does talk to stuff on your network then just connect it to your switch.

    You could use a bridge if you wanted to have a transparent firewall between devices on each side of the bridge..  But in your setup I would break put those on their own segments wireless and wired.  As to the deca, not sure what use there is of putting that on same segment as your lan or wifi - from my understand it only uses that ethernet connection for internet.

    "With DECA coax networking, the DVRs only use your home network for internet access"

    So that really should just be on its own segment, bridging it to your network would only slow down your other networks.

    So you could still leverage your nics on your pfsense, but just segment your 3 networks..  So you would have LAN network, say 10.0.0/24 and your modem networks (10.0.1,2/24) and then your deca could be 10.0.4/24 and your wifi could be 10.0.5/24 – this gives you easy to mange filewall controls and 3 different broadcast domains to keep the broadcast and multicast noise off those other networks.



  • reason it's all the same is because any device on any of the three networks has to be able to talk to any device on any other network (for instance remote monitoring of applications on wifi devices from a wired desktop. i'm not sure exactly what all the deca bridge does, supposedly it's supposed to allow devices on the network to stream from it, but i've not had much luck with that (also not had the best of luck keeping the receiver from locking up, and that's after updating it). i'll probably stuff everything on the switch once i build a smaller computer that will sit where the ap is now and get some shorter cords so it's less of a mess.


  • Rebel Alliance Global Moderator

    "reason it's all the same is because any device on any of the three networks has to be able to talk to any device on any other network"

    Then they should all be connected to switch, your bridge is not buying you anything but slower connectivity.  My wifi devices can talk to my wired devices - but I have them on 2 segments because my wifi devices sure an the hell don't need to see my wired networks broadcast or multicast traffic.

    Everything I read about the deca stuff is your whole home dvr stuff is on the coax network..  The ethernet is just for internet..  What equipment do you have, I am directv user for example - both of my dvrs are on network just from from connection on the back of them.  To stream recorded shows to your mobile I do believe you need genie to go..  I don't have genie yet - but I can watch recorded shows from my dvrs on my PC and they are not on the same network segment, etc.



  • yeah, i have the genie, got it as a free upgrade for "moving" after a house fire late last year, eventhough new house is on the same plot of land, just a different area, but i'm not gonna argue with that logic if it means i get free premium stuff.



  • Same here, anybody had any success accesing modem gui?


  • Banned

    @jmven:

    Same here, anybody had any success accesing modem gui?

    Works just fine here - see below (modem on 192.168.255.1)



  • My modem is on bridge mode, im not using ppoe, can i use this adding 2nd interface method?


  • Banned

    My modem is on bridge mode as well… Not sure how's PPPoE related here. This is using a dedicated NIC on pfS with cable plugged to modem's LAN port. This will work as long as your modem has some LAN IP address outside your normal LAN subnet defined on pfSense. If it has none, well then there's nothing to access.



  • Ok yes now i got the idea, yes with one extra nic physically connected to the modem, fixed ip on the modem's subnet you can access it

    But i was thinking on the original idea of one virtual ip and the outbound nat rule involving this virtual ip you dont need the extra nic. In fact i had this configuration in 2.0 and it was working ok, but now i cannot get it to work again. Thanks doktornotor


  • Banned

    Are you referring to this? https://doc.pfsense.org/index.php/Accessing_modem_from_inside_firewall

    I don't think that howto is intended for bridged modem setup at all (the NAT just makes no sense for this setup.) As for extra NIC, well… not really needed if using PPPoE, you could recycle WAN for that - but, first of all, that sounds like a hack to me, plus - this NIC is onboard POS unused for anything since it sucks badly.