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Dynamic Dns works, cant access user portal or VPN anymore

Andrea Peccerillo

Hello everyone, i have been running sophos UTM 9 for quite a while now. I used it as a router for my home network with a very simple configuration 

ISP router-->Sophos UTM9--> Switch-->Local network 

Ip addresses on isp router network is 192.168.0.x

Ip addresses on local network is 192.168.1.x

I have VPN connection and a dynamic DNS set up on the sophos so that i can remotely access my freenas server and some other stuff from my home network.

Everything has been working great until few weeks ago when i moved out to another flat with a different ISP( at least i think thats the reason), same network configuration, same servers but i'm no longer able to access user portal, or connect via VPN to my local network from remote.

I can still access User Portal and the admin panel from my local network, everything else seem to be working fine and i know the ddns is working fine too.

 

Does anyone have a clue where should i start fixing this problem?

 



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Parents
  • 0

    Router connecting to ISP has to forward incoming packets to UTM.

    if you get a new router with the new ISP you have to check this.

    In Germany we have some ISP connections without real IP4 (mostly from cable TV provider).

    With this connections the forwarding is unsuccessfully.  

     


    Dirk

    Systema Gesellschaft für angewandte Datentechnik mbH  // Sophos Platinum Partner
    Sophos Solution Partner since 2003
    If a post solves your question, click the 'Verify Answer' link at this post.

Reply
  • 0

    Router connecting to ISP has to forward incoming packets to UTM.

    if you get a new router with the new ISP you have to check this.

    In Germany we have some ISP connections without real IP4 (mostly from cable TV provider).

    With this connections the forwarding is unsuccessfully.  

     


    Dirk

    Systema Gesellschaft für angewandte Datentechnik mbH  // Sophos Platinum Partner
    Sophos Solution Partner since 2003
    If a post solves your question, click the 'Verify Answer' link at this post.

Children
  • 0 in reply to dirkkotte

    Hi i thought so, thats why i disabled the ISP router's firewall and enabled the DMZ on 192.168.0.1 which is the sophos IP address on the interface connected to the ISP router:

    The ISP router has Ip address 192.168.0.254.

    Dont really see options for nat on the ISP router apart from some games option. 

    How can i find out if this is actually the problem? any port scan or anything?

  • 0 in reply to Andrea Peccerillo

    the games options may allow the correct configuration.

    check if forwarding all traffic to a single host is possible.

    also check if dyndns works correctly.

    nslookup yourhost.your-dns-provider.com   should output the same ip as "http://myip.dk"

     

     

     

     


    Dirk

    Systema Gesellschaft für angewandte Datentechnik mbH  // Sophos Platinum Partner
    Sophos Solution Partner since 2003
    If a post solves your question, click the 'Verify Answer' link at this post.

  • 0 in reply to dirkkotte

    nslookup output the same ip address, the ddns works. i just cant access my network from outside...gonna give this game options a go

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