Hello,
I utilize a wireless internet connection to my ISP and they use a VLAN to connect users and allocate IP addresses in the private range - 10.237.x.x . So my NIC connected to ISP is assigned an IP address, subnet mask and default gateway from the ISP's DHCP server. All internal LAN machines receive their IP's etc., from the WinGate DHCP server. However, the WG DHCP server is broadcasting it's availabilty to the other users on the VLAN. I am seeing, over time, the same outside users requesting service from WG DHCP. Now, I have restricted allocation only to internal NetBios names, but these requests keep coming in and show up as system messages with authentication failure. I have unchecked in ENS the "Support for multiple subnetworks" but no change. Stopping the DHCP service stops the requests from coming in. I have ver 5.0.7 on XP as WG server using 192.168.0.1 as static IP address. Only property that is checked on NIC to ISP is TCP/IP. Is this happening because of private IP addresses on ISP side? Or something else? Is there anything else I can do? It's not a mission critical issue but an "annoyance" factor.
In summary -two network cards. One local LAN to hub, other to wireless modem to ISP.
DHCP bound only to local NIC - 192.168.0.1. I've snipped out sections from
WinGate config. report below.
5.02 Network Interfaces
5.03 ---------------------------------------------
5.04 10.237.88.232 (LAN) [External] [Unsecure]
5.05 192.168.0.1 (LAN) [Internal] [Secure]
5.06 Dial Up (RAS) [External] [Unsecure]
5.07 127.0.0.1 (LOOPBACK) [Internal] [Secure]
5.08
6.50 DHCP Service (DHCP Service)
6.51 ---------------------------------------------
6.52 Session Timeout: 60
6.53 Port: 67
6.54 Startup: Manual start/stop
6.55 Binding 1: 192.168.0.1
6.56 Access Rights: Defaults: are ignored
6.57 Everyone - Restricted by request
6.58 Start/Stop Rights: Defaults: may be used instead
6.59 Edit Rights: Defaults: may be used instead
6.60
8.02 Enhanced Network Support
8.03 ---------------------------------------------
8.04 Enhanced Network Support: 5.00 Syz - Installed and active
8.05 Driver: Enabled
8.06 NAT: Enabled
8.07 Router: Disabled
8.08 Firewall level: Custom
8.09
8.10 Firewall
8.11 ---------------------------------------------
8.12 Disable network name broadcasts to the Internet: Enabled
8.13 Allow users to ping this machine locally: Enabled
8.14 Allow users to ping this machine from the Internet: Disabled
8.15 Discard spoofed packets: Enabled