Solved

Passive FTP Question

Posted on 2013-11-01
3
265 Views
Last Modified: 2013-11-03
Being a complete idiot regarding FTP, I was wondering what the following means:
227 Entering Passive Mode (23,21,105,227,225,23)

In particular, what do the numbers in parentheses symbolize?
0
Comment
Question by:swlaurie
  • 2
3 Comments
 
LVL 11

Expert Comment

by:N R
ID: 39616571
Well I know the first set of numbers are your IP.

23.21.105.227

Somehow the calculation on the last two is a port I believe.
0
 
LVL 16

Accepted Solution

by:
AlexPace earned 500 total points
ID: 39616809
Take the 5th number, multiply by 256 and then add the 6th number to get the port where the server is waiting for the client to connect for a passive mode data channel.

(225 * 256) + 23 = 57623
0
 
LVL 16

Expert Comment

by:AlexPace
ID: 39616814
If you are opening ports on the firewall be aware that passive mode typically uses a port range so contact the administrator of the FTP site and ask "what is your passive port range?" ... it sounds like a strange question but the FTP admin should be able to answer it.
0

Featured Post

Back Up Your Microsoft Windows Server®

Back up all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
PHP in Apache server 20 95
Problem to go to page 12 93
Stream live video from Raspberry Pi camera 22 158
How can i point a subdomain to directory? 5 20
Cloud-based technologies and services will continue to grow in popularity in 2017 thanks to the simple, scalable and cost-effective solutions they deliver. Here are three areas where cloud adoption is poised to really take off.
A customer recently asked me about anti-malware and the different deployment options available for his business. Daily news about cyberattacks, zero-day vulnerabilities, and companies that suffered a security breach made him wonder if the endpoint a…
Connecting to an Amazon Linux EC2 Instance from Windows Using PuTTY.
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…

773 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question