FTP Problem

[Aliew]

Hi bro and sis,

i am running ftp server using serv-u and access the server using smartftp client.

i got a free domain name from dyndns.org. i use dynamic ip and have dyndns updater software running on my local host.

the problem i have is when the ip of local host chages to something like 60.64..... i get an error saying "no connection can be made as the local machine actively refuses it". But when the ip of the local host changes to something like 5.58.......... the ftp client can access the ftp server without problem.

Any bro / sis encounter this same problem before?

Any help is very much appreciated.

Thank you.

[yawningdog]

When you say "local host", do you mean the server or the client? Why is the IP address changing? Are you moving around a lot?

To answer your question, no I've never used serv-u or smartftp.

[Variable]

Try FTP from the browser, when smartftp fails.. I wonder if the FTP client is caching the IP.

Does your Serv-U host have an internal IP that it listens on?

[Aliew]

Thank you for the feedback.

Dear yawningdog,

By 'local host' i mean the server. i do not power on the server 24/7 and sometimes when it was on i notice a change in ip in dyndns updater.

i am running the server via a router. The change in ip maybe due to dhcp is on? Sorry i am really new in this.

Dear variable,

i can access the ftp server via web browser when smartftp is working, but cannot do so when smartftp fails to work. so i guess this maybe not the problem of smartftp.

yes there in an internal ip that the server listens on.

[Variable]

Are you port forwarding any FTP to the internal IP? IF so I would think the issue may be dyndns, easy to test. When FTP fails via the name, go to whatismyip.com and try to FTP to the public IP. This takes the DNS issue out of the picture. If it still doesn't work I would look at how you pass the FTP traffic to the internal IP.

[Aliew]

Yes i did the port forwarding (port 21). Thank you for the suggestion on testing n i will do so and revert the outcome.