December 1998
Intermediate to advanced
228 pages
6h 36m
English
Content preview from Virtual Private Networks, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Troubleshooting Problems
What do you do if your system doesn’t connect? Is the trouble with your remote user’s ISP, the Central Office’s ISP, with the Internet itself, or with the configuration on the RAS client or server? Because of all the factors involved, problems with VPN connections are some of the most difficult to track down.
Login problems
For dial-up RAS users, the most common problem in getting connected is working with the modem. In that case, all troubleshooting can be done on the client side. Authentication problems (bad usernames or passwords, or incorrect authentication type) follow shortly thereafter, and often require that someone look through the logs or watch the connection attempt at the destination RAS server. Windows NT’s Event Viewer and Dial-Up Networking Monitor help you isolate such login problems.
The Event Viewer
The Event Viewer is the common logging system on all Windows NT machines. It can be found from the Start menu under Programs → Administrative Tools. Let’s say that Sara N. is having trouble dialing in—she seems to be having negotiation problems and isn’t sure why. When you bring up the Event Viewer, look at the Source column for any RemoteAccess messages that occurred at the approximate time she was attempting to dial in. In the left-hand column, there are icons that distinguish informational messages (an “i” encircled in blue), from warning messages (an exclamation mark encircled in yellow), and from error messages (a red STOP sign). You see ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.