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Setting up UTM9 with AT&T U-Verse

Stephen Dyer

I'm trying to setup Sophos UTM 9.4 on a QOTOM J1900 Mini-PC with dual NICs in conjunction with AT&T U-verse DSL.

I have a PACE 2Wire 5031NV series modem in DMZplus mode which simulates a bridged mode. I also have a Netgear WNDR3700 wifi router configured with my DSL authentication information, and these devices have been working solid for the past couple of years. The 2Wire modem passes the DSL dynamic IP address to the Netgear which handles all the layer 3 & layer 4 traffic for me.

My intention is to insert the new UTM firewall in place of the Netgear WNDR3700 , and have it become my new router. I will then reconfigure my Netgear to be simply a layer 2 device on the internal network.

Goal is: 

PACE 2Wire 5031NV (Simulate bridged mode)  ------ Sophos UTM9.4 (acting as router & FW) ----------- Netgear WNDR3700 (Layer 2 WAP)

Unfortunately, I cannot seem to figure out how to make this work. I have completely reset the 2Wire modem, and have selected the Sophos UTM9.4 device as the primary unit in DMZplus. I have configured the ethernet port on the Sophos UTM to use PPPOE, and have entered my credentials, but when in PPPOE mode, it shows my ethernet link as down. If I switch the NIC to use standard ethernet, rather than PPPOE, it does get my external IP Address passed to it from the 2Wire modem, and does show a link status of Up. 

Obviously when set to standard ethernet, it does not authenticate me on AT&T's network, so I have no internet. I have tried this multiple times, and cannot figure out what else to do. I have completely reset the modem at least four times. I have reinstalled Sophos UTM9.4 three times. I have setup Sophos to use Ethernet 0 for U-Verse and also tried Ethernet 1 for U-Verse. I have tried MTU sizes od 1500, 1492, and 1468, all with no success.

The netgear WNDR3700 has been completely removed from the network during this time, and will not be reintroduced until I can get the UTM9.4 up and running stable for a few days.

Any help or guidance would be greatly appreciated!



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    I use the UTM 9 with UVerse without any problems.  You have to use the DMZPlus mode and direct all traffic to the UTM wan interface.  I do not think PPPOE has any relevance as the UVERSE modem handles authentication to the AT&T Network.

     

    Also, I do not have a static IP address but my public address only changes if I manually disconnect and re-establish my UVERSE wan connection.  A standard modem restart does NOT change my public IP.

    Erik

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  • 0

    I use the UTM 9 with UVerse without any problems.  You have to use the DMZPlus mode and direct all traffic to the UTM wan interface.  I do not think PPPOE has any relevance as the UVERSE modem handles authentication to the AT&T Network.

     

    Also, I do not have a static IP address but my public address only changes if I manually disconnect and re-establish my UVERSE wan connection.  A standard modem restart does NOT change my public IP.

    Erik

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