Is there anything special about using Serv-U on ISDN I should know?
If your ISDN connection is billed ‘per minute’ instead of a flat rate, and you’ve set up your system in such a way that it automatically connects to the Internet when a program wants to send/receive packets a little care is needed with Serv-U. In case you are trying Serv-U in its fully functional try-out mode, it’ll contact my permission server when it is started. This will normally only result in a single packet being sent out, and one packet coming back from the permission server. But, if you are behind a firewall, or the permission server is down, Serv-U will not receive an answer and it will keep retrying every 5 minutes (or for older versions that’ll be every 3 minutes). Meanwhile the server will work just fine. Well, you get the picture. Worst case this means your ISDN modem will dial up to the network every couple of minutes and if that goes on for a week or so your phone charges could get a bit out-of-hand to put it mildly. The solution is to either make sure that you see the r
