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Routing question

stvkellogg
I've got a routing issue I haven't dealt with before but I think the solution must be simple. I'm using a Sophos UTM425 with latest firmware.

Our ISP has installed a dedicated fiber line with a single static public IP address 66.45.x.x/30.  We've leased some static IP's from the ISP but they're on a different public network 24.124.x.x/29.  I have to set up a routing rule so that devices on this second network can get out over the first one.

The ISP says I need to create an IP route from the /29 network to the IP of the /30 network.  For the /29 network they've given me a default gateway IP address, subnet mask and 5 usable static IP addresses.

If someone could explain the steps to accomplish the routing I would be very grateful.


Thanks in advance,

Steve


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  • 0
    Interestingly, a support rep at my ISP just said to set up the /29 network as a local subnet, even though they're public IP addresses.  I guess they've got the routing part set up on their end.  This setup is completely new to me.  I suppose security will be more important with publicly accessible IP addresses on my local network.
  • 0
    Steve, it sounds like you've got a DMZ interface with your 24.124.x.x/29 IPs behind it and your ISP is routing those to the IP on your External interface.  WebAdmin automatically creates routes for that, but you will need Firewall rules to allow desired traffic.  No NAT or masquerading should be done on traffic between the Internet and 24.124.x.x/29.

    Cheers - Bob
    PS If these are IP for web servers and you want to use Webserver Protection, you will want to configure differently.
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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