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crdixon

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IP address conflicts Windows server 2003

Hello, I'm running into an issue when staff outside the office connect via a PPTP VPN or through the SonicWall Global VPN client. They are able to establish the VPN but once connected they are not able to access any network resources. I'm pretty sure it is some type of IP conflict. If I make a static lease reservations in the Windows 2003 server's DHCP service the problem will go away for that client. There is only one DHCP server on this small network. The part that is driving me crazy is that I've got SolarWinds IP address tracker running on my PC. I will consistently see entries in that for the netbios names of machines that were taken out of service long ago. From my very same computer, I will ping the IP address that SolarWinds is referencing and there will be no response for those odd line items. There are often half a dozen of these "phantom" entries. When i force solarwinds to refresh the subnet i'm looking at,  I believe it uses a ping so i don't know why Solarwinds is different than when i do this manually. My DHCP lease duration is set to 8 days. I also scavenged the stale records and cleared the cache in the DHCP service but that didn't seem to help. Thanks experts.
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crdixon

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I rebuilt the RRAS and I haven't seen the issue again with the PPTP clients although it has only been a few days. The RAS PPTP clients get an IP outside of the regular LAN IP lease range. The SonicWall Global VPN clients get their IP leases though the same pool as the LAN clients from the Win20003 AD server.

I'm not running WINS, I've rebooted the servers and and workstations and did the nbtstat -RR and ipconfig /flushdns. I assume a server reboot also accomplishes clearing the casche. I've done the flushdns several times before but ui've never done the nbtstat -RR before today. The scavanging was already set on the DNS server.

If I ping the netbios names or IP's associated with the phantom entries I get nothing. Still scratching my head where these entries are coming from.
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