troubleshooting Question

Workstations are being assigned 192.168.1.111 instead of an IP in our 192.168.20.X subnet

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robwhite64 asked on
Networking
24 Comments1 Solution1246 ViewsLast Modified:
We recently had NAT and DHCP turned off in our SDSL router so that our Firebox X50 Edge could provide these services. Our subnet is 192.168.20.X, but since making the switch, I've had 9-10 instances where a user boots up and is assigned the following:
       
        IP Address. . . . . . . . . . . . : 192.168.1.111
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 192.168.1.1
        DHCP Server . . . . . . . . . . . : 192.168.1.1

There is no other DHCP server in use on the network. I've checked all of our servers (W2K & W2003) and DHCP is not installed on any of them. I worked with firewall support for 2 days and sent them logs, but there are no entries in the logs that list anything out of our subnet. I also had the ISP that manages the router double check it.

Where could this erroneous assignment be coming from ??
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