I am having issues with VPN over ADSL. I have four offices -- three offices connect to the fourth. There are times when some users are connected and others are not. When I disconnect and reconnect to ADSL, only after three or four tries am I able to connect. It had been running fine for a year, but the problem just started. The configuration has not been changed. I called our ISP and they said they have nothing to do with it. Can I connect to my site without using VPN?
Your best bet is to run a packet sniffer like Network Monitor or Ethereal to determine how network traffic is being transmitted to and from your ISP connection, and if any packets are being dropped or otherwise blocked. You can also use a tool like NMAP or PortQry to ensure that your VPN servers or devices are listening on the appropriate ports.
Dig deeper on Microsoft Active Directory
Active Directory expert Laura E. Hunter offers some advice for changing the IP addresses of domain controllers.continue reading
An admin has two domains and two Active Directories. He wants to know how to join the Active Directories so that internal staff can access both, but ...continue reading
An admin needs to grant user access rights for those needing to traverse directory trees. Our server management expert explains how to use Group ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.