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Portforward from Modem A or B (or both)?

  • 18-04-2016 07:24PM
    #1
    eladnova
    Registered Users, Registered Users 2 Posts: 116 ✭✭


    Hi guys

    I'm trying to set up port forwarding so I can FTP into my NAS. I actually had this working before and know a little about port forwarding etc and DNS etc but unfortunately hosed my settings.

    I have a setup of

    A: Broadband cable router (bridge mode)
    B: Netgear router
    C: NAS


    skitch.png

    My question is, do I need to :

    1. Setup port forwarding from Router A to NAS C.
    OR
    2 Setup port forwarding from Router A to Router B and then setup Router B to port forward to NAS C

    I just cannot seem to get this working this time around and I'm running DSM 6.

    I have the following checklists complete

    * UPC gave me a IPV4 address and the router A is in bridge mode
    * Router A has a NOIP Dynamic IP address which works
    * NAS Drive C has a reserved IP established on Router B Control Panel.

    I've read and re-read the forums as there are multiple FTP posts but nothing mentioned works.

    Any suggestions? Particularly around points 1 and 2.
    Thanks in advance
    Tagged:


Comments

  • #2
    mass_debater
    Closed Accounts Posts: 3,072 ✭✭✭mass_debater


    eladnova wrote: »
    Hi guys

    I'm trying to set up port forwarding so I can FTP into my NAS. I actually had this working before and know a little about port forwarding etc and DNS etc but unfortunately hosed my settings.

    I have a setup of

    A: Broadband cable router (bridge mode)
    B: Netgear router
    C: NAS


    skitch.png

    My question is, do I need to :

    1. Setup port forwarding from Router A to NAS C.
    OR
    2 Setup port forwarding from Router A to Router B and then setup Router B to port forward to NAS C

    I just cannot seem to get this working this time around and I'm running DSM 6.

    I have the following checklists complete

    * UPC gave me a IPV4 address and the router A is in bridge mode
    * Router A has a NOIP Dynamic IP address which works
    * NAS Drive C has a reserved IP established on Router B Control Panel.

    I've read and re-read the forums as there are multiple FTP posts but nothing mentioned works.

    Any suggestions? Particularly around points 1 and 2.
    Thanks in advance

    If your modem is in bridge mode it's a layer 2 device so will not be routing. You port forward from your router b to the Nas


  • #3
    eladnova
    Registered Users, Registered Users 2 Posts: 116 ✭✭eladnova


    mass_debater wrote: »
    If your modem is in bridge mode it's a layer 2 device so will not be routing. You port forward from your router b to the Nas

    Cheers man. Was wondering.
    No joy so far.

    oddly enough, it works fine if Modem B is set to AccessPoint mode.
    But that's no good for me as it disables a lot of the router functionality I need.

    I'll eventually fig it out! There's a shed load of settings in the NAS Control Panel too so it could be one of them although FTP does work locally (not externally) so I'm half way there.


  • #4
    ED E
    Registered Users, Registered Users 2 Posts: 36,095 ✭✭✭✭ED E


    Then you aren't actually bridging.


  • #5
    eladnova
    Registered Users, Registered Users 2 Posts: 116 ✭✭eladnova


    ED E wrote: »
    Then you aren't actually bridging.

    "Then..."

    When?
    When I was in Access Point mode? I get that.
    Or did you mean I'm not in bridge mode if port forwarding is not working?


  • #6
    brianwalshcork
    Registered Users, Registered Users 2 Posts: 610 ✭✭✭brianwalshcork


    What port numbers are you forwarding for FTP?


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  • #7
    eladnova
    Registered Users, Registered Users 2 Posts: 116 ✭✭eladnova


    brianwalshcork wrote: »
    What port numbers are you forwarding for FTP?

    Hi Brian

    I'm forwarding ports

    21 for FTP
    22 for SFTP
    55536-55663 for Passive mode


  • #8
    Cuddlesworth
    Registered Users, Registered Users 2 Posts: 14,010 ✭✭✭✭Cuddlesworth


    What device is Router B, from what provider?

    Is Router A plugged into the WAN port on Router B.

    What IP does router B get on its WAN interface, does it start with 10 or 192?


  • #9
    eladnova
    Registered Users, Registered Users 2 Posts: 116 ✭✭eladnova


    Cuddlesworth wrote: »

    What device is Router B, from what provider?

    Is Router A plugged into the WAN port on Router B.

    What IP does router B get on its WAN interface, does it start with 10 or 192?

    Router B: A Netgear R7000

    Router A (UPC) is plugged into one of the 4 ethernet ports on Router B (Netgear).
    Should it instead be plugged into the single "internet" port n Router B (Netgear)?

    Router B WAN interface: 192.168.1.18


  • #10
    Cuddlesworth
    Registered Users, Registered Users 2 Posts: 14,010 ✭✭✭✭Cuddlesworth


    eladnova wrote: »
    Router B: A Netgear R7000

    Router A (UPC) is plugged into one of the 4 ethernet ports on Router B (Netgear).
    Should it instead be plugged into the single "internet" port n Router B (Netgear)?

    Router B WAN interface: 192.168.1.18

    In your case, router B is not acting as a router. Router B should be set to access point mode. Port forwarding should be between router A and NAS C.

    You should check to see if IPV6 is enabled, http://test-ipv6.com/ It should come up as "no IPV6 enabled". If that is the case, port forwarding should work. If not, you don't have a valid IPV4 address from Virgin.


  • #11
    eladnova
    Registered Users, Registered Users 2 Posts: 116 ✭✭eladnova


    Ok thanks.

    I do have an IP 4 address (just checked) and apparently the UPC guys set it to bridge mode which can be implemented on a request basis.
    Normally by default they do IPV6 and don't support bridge mode.


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  • #12
    Cuddlesworth
    Registered Users, Registered Users 2 Posts: 14,010 ✭✭✭✭Cuddlesworth


    Is it one of the new large white 360MB modems?

    Like this.
    superhub3.jpg


  • #13
    eladnova
    Registered Users, Registered Users 2 Posts: 116 ✭✭eladnova


    Cuddlesworth wrote: »
    Is it one of the new large white 360MB modems?

    Like this.
    superhub3.jpg


    No such luck. It's the hideous technicolor 7200

    https://www.google.ie/search?q=upc+modem+technicolor+7200&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiFtLafzJrMAhXHbhQKHWxxCvoQ_AUIBygB&biw=1293&bih=1290


  • #14
    Cuddlesworth
    Registered Users, Registered Users 2 Posts: 14,010 ✭✭✭✭Cuddlesworth


    eladnova wrote: »
    No such luck. It's the hideous technicolor 7200

    Its not in bridge/modem mode. Bridge mode is where the device becomes a modem for coaxial, no wifi or other services work on it. I know that because UPC don't allow or support bridge mode on the 7200. They deliberately removed it.

    Your choices are
    • Get the new 360Mb compal modem(this does allow a "modem" mode)
    • Turn your netgear into AP mode and do what you need to do on the somewhat dodgey 7200.
    • Run double Nat, where the 7200 plugs into the WAN port on the Netgear. There is a good chance this will break something else though, its not a good idea in general.


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