W2K3 DHCP releases 10 ip addresses with RAS unique id and domain server as a computer name every Monday at same time weekly

Posted on 2009-04-16
Last Modified: 2012-05-06
When I checked DHCP snap-in, I found that DHCP releases 10 ip addresses to its own server with RAS as unique id (this server is the domain server, dhcp, dns and RAS server). I was not sure what caused DHCP to release 10 ip addresses with RAS unique id. I sometimes deleted the ip address and didn't affect our operation. I observed for a while and noticed it happened every Monday and about 15:21 weekly. We have a Cisco firewall router and use the router as VPN connection. But, I know no one use VPN in our company except I. I set up WSUS and Time server on this server. If you have any ideas for this cause, I appreciate your comments.

Thank you,
Question by:Tech110
    LVL 3

    Expert Comment

    Why are you running RAS?
    Was it set-up to be a VPN gateway at one time? If so then it would be releasing IPs to itself to allow for this. It is not needed anymore if you are VPNing into the firewall. You should be able to remove RAS.

    Author Comment

    I am not sure that this server was set up as a VPN gateway since I didn't configure it at the beginning. However, we use the firewall for VPN and we don't need RAS, so I stopped the service. I will checK to see any dhcp release to RAS next week. So, though there is no direct VPN connection to this server, if the server is once set up as a gateway, dhcp still release ips to itself?
    LVL 3

    Accepted Solution

    Yes, because it sounds as though they never stopped the RAS service or removed the configs for it to be used as a VPN gateway.

    Author Comment


    Thank you, stopping the service is working.
    I didn't see any IP release to RAS.

    Featured Post

    Do You Know the 4 Main Threat Actor Types?

    Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.

    Join & Write a Comment

    Suggested Solutions

    I've always wanted to allow a user to have a printer no matter where they login. The steps below will show you how to achieve just that. In this Article I'll show how to deploy printers automatically with group policy and then using security fil…
    ADCs have gained traction within the last decade, largely due to increased demand for legacy load balancing appliances to handle more advanced application delivery requirements and improve application performance.
    It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems, in many languages.
    Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

    731 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    17 Experts available now in Live!

    Get 1:1 Help Now