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| Author | Forum: PowerTCP FTP for ActiveX Topic: PASSIVE or ACTIVE |
| HMan From: Clearwater Beach, FL USA Posts: 13 Member Since: 08/30/01 |
posted August 30, 2001 10:29 PM I'm having an awful lot of folks with routers who can only receive in non-passive mode. Login and transfer problems if otherwise. Can anyone give me advice on what the main rule-of-thumb is here. We use non-standard ports 2274 mostly, how does that affect our connecting, storing and retrieval of files in PASSIVE mode vs ACTIVE mode? Thanks Harvey Myers, MCP, MCSD |
K M Drake From: Utica, NY USA Posts: 3406 Member Since: 07/14/00 |
posted August 31, 2001 11:34 AM Hi Harvey, Is this a client- or server-side question? If the client is unable to transfer in Passive mode, either something (a proxy) is preventing the client from connecting to the port specified by the server, or something is preventing the server from receiving data on the port specified. The opposite is true for non-Passive, where the server connects to the client. Generally, more client proxies allow outgoing connections, which would actually suggest that Passive is more likely to work. -ken K M Drake Dart Tech Support |
| HMan From: Clearwater Beach, FL USA Posts: 13 Member Since: 08/30/01 |
posted August 31, 2001 12:14 PM OK, let me be more specific. In the PASV command, a symptom is that it shows the servers interal ip address rather than the exteranal. Here's a clip from one trace log. 220 Welcome to the Remote Backup Server USER DEMO 331 Password required for DEMO. PASS DEMO 230 User DEMO logged in. PWD 257 "/DEMO/" is current directory. SYST 215 QTI RBS Server V8.02 PASV 227 Entering Passive Mode (192,168,1,10,11,1) the 192.168.1.10 is the address of the FTP Server behind the router. The router is 192.168.1.1 ACTIVE works fine and the port command shows the right external server address. any recommendations for general router setup or what hardware parameters might most affect this? |
| HMan From: Clearwater Beach, FL USA Posts: 13 Member Since: 08/30/01 |
posted August 31, 2001 12:15 PM Just as I posted, I noticed your question about server or client side. That answer is both. Both are Dart, server uses DartFTPServer.dll. I can make changes on either side. |
| K M Drake From: Utica, NY USA Posts: 3406 Member Since: 07/14/00 |
posted September 4, 2001 12:28 PM Hi, Because the control uses the IP address of the machine it is running on, I'm not sure how you would be able to do Passive transfers behind a firewall. (See http://support.dart.com/forum.dwp?view=3679#FID3679) Sorry, -ken K M Drake Dart Tech Support |
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