dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410482″>File Transfer Protocol (FTP) server runs behind a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410497″>router, your users may sometimes encounter connectivity issues. One of the most common causes of dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410476″>data connection mode being used. This mode can be either active or passive. Certain dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410477″>FTP connections if the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410473″>passive FTP dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall configurations and what mode we recommend you use going forward. Although active and RFC 959, the explanations can be too technical. Before we tackle the main discussion, let’s first review dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410477″>FTP
dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410498″>commanddropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410485″>data channel
Every dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410498″>command channel and a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410507″>FTP commands and command responses go through the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410485″>data channel.
Your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410483″>TCP dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410507″>FTP dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410498″ data-dropdown-placement-param=”top” data-term-id=”295410498″> channel will use port 21 on the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410485″>data channel, the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410479″>portdropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410476″>data connection mode used. In dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410490″>server dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410479″ data-dropdown-placement-param=”top” data-term-id=”295410479″> number for the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410471″>passive mode, this would be a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410479″>port
It’s worth noting that other dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410482″>File Transfer Protocol (dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410496″>data transfers.
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This two-channel property is unique to the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410515″>SSL a.k.a FTPS. Indeed, dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall connectivity issues that affect FTP. So, if you’re using FTPS instead of FTP, you also benefit from our discussion here.
If you need assistance using secure dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410477″>FTP connections, you can schedule a demo with one of our experts.
Let’s now differentiate between dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410506″>passive modedropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410476″>data connection. For instance, it should be easy to see that the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410498″>command channel connection (the top arrow) regardless the mode used.
What is dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410500″ data-dropdown-placement-param=”top” data-term-id=”295410500″> FTP?
Older versions of FTP used to run on only one dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410474″>active mode. Since this mode is common in legacy FTP systems, many FTP software use this as the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410500″>active modedropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410475″>FTP client and dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410472″>FTP server on dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410479″>portdropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410492″>random port on its file transfer client. This dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410492″>random port and dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410498″>command channel or dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410487″>PORT command, while specifying what random dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410489″>client-side port will be used later on for the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410489″>client-side port specified in step 1 for the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410474″>active mode, the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410476″>data connection. Once the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410502″>directory listings are coursed through this connection.
What is dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410506″ data-dropdown-placement-param=”top” data-term-id=”295410506″> FTP?
As hinted earlier, dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410506″ data-dropdown-placement-param=”top” data-term-id=”295410506″> FTP is the more recent dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410474″>active mode, modern GUI-based or dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410475″>FTP clients also support dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410505″>passive connections.
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As in dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410500″ data-dropdown-placement-param=”top” data-term-id=”295410500″> FTP, the client initiates the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410475″>FTP client connects to the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410483″>TCP port 21. But instead of sending the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410481″>PASV command. This tells the server that the client wishes to transfer files using dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410492″>random port from its own set of ports for the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410490″>server port to connect to for the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410485″>data channel connection. The client connects from a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410493″>data port specified by the server in step 1. Once the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410496″>data transfers and
You’re ready to discuss the firewall considerations you need to make when dealing with FTP in either active or passive mode.
dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall responds to an dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410489″>Client-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall configurations are lenient to outbound connections but more restrictive when it comes to inbound connections. So, for example, if you have a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall and an dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410472″>FTP server at port 21, the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall’s point of view, the connection attempt is outbound.
In fact, from any dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall’s point of view, all FTP dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410475″>FTP clients shouldn’t have a problem establishing a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410472″>FTP server. However, the same thing can’t be said for dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410500″>active modedropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410476″>data connection. Since the connection is inbound from the 
So, if a user encounters a connectivity issue while attempting to connect to your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410474″>active mode.
If it is, a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall is likely block the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410489″>client-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410499″>Microsoft dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall to check would be your user’s dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall.
You’re less likely to encounter similar issues with a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410503″>FTPdropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410473″>Passive dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410509″ data-dropdown-placement-param=”top” data-term-id=”295410509″> works better with dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewalls because both the command connection and the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall’s point of view, all connection attempts are outbound.
All right, that’s for client-side firewalls. Before we do server-side firewalls, here’s a friendly reminder that you can test JSCAPE features inside your own environment with support from a product expert. Click here to request your no-obligation, risk-free trial.
dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewalls
When you deploy an dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410475″>FTP clients to connect with that server. That means you’ll want to open port 21 on that dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410498″>command channel connection attempt to pass through. But how about
Normally, a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall won’t pose any problems to dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410500″ data-dropdown-placement-param=”top” data-term-id=”295410500″> dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410477″ data-dropdown-placement-param=”top” data-term-id=”295410477″> connections. That’s because the connection attempt is directed to the client, which means, from the
Since a dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410506″ data-dropdown-placement-param=”top” data-term-id=”295410506″> FTP dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall should block that attempt, right? Generally speaking, yes. That’s why you should explicitly open a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410506″>passive mode
dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410473″>Passive FTP – Which is better?
Based on our discussion above, connection issues can happen on a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall or a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall. Apparently, a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall would normally block dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410500″ data-dropdown-placement-param=”top” data-term-id=”295410500″> FTP dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410506″>passive modedropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410476″>data connection attempts.
One way to address an dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410500″ data-dropdown-placement-param=”top” data-term-id=”295410500″> dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410477″ data-dropdown-placement-param=”top” data-term-id=”295410477″> connectivity issue is to allow inbound connections to certain dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410492″>random ports on your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall. Similarly, one way to address a dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410506″ data-dropdown-placement-param=”top” data-term-id=”295410506″> dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410477″ data-dropdown-placement-param=”top” data-term-id=”295410477″> connectivity issue is to allow inbound connections to certain dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410489″>client-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewalls. So, while opening dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410489″>client-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410500″>active modedropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410477″>FTPdropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410506″>passive modedropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall settings there. So, yes, we recommend you use dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410506″ data-dropdown-placement-param=”top” data-term-id=”295410506″> FTP moving forward. It’s going to be much easier to avoid connectivity issues that way.
Security considerations when setting up dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410492″>random ports on your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall, know that opening ports in wanton abandon can increase your exposure to internet-based cyber threats. The right approach is to configure a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410472″>FTP server for dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410506″ data-dropdown-placement-param=”top” data-term-id=”295410506″> FTP dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410501″>range of ports on your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410473″>passive dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410495″ data-dropdown-placement-param=”top” data-term-id=”295410495″> port range
The specific number of ports you need to open for dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410505″>passive connections. While no hard and fast rules dictate the ideal number of ports comprising a port range, you will want to project your maximum number of concurrent users and allocate a sizable allowance based on that estimate.
Your JSCAPE MFT Server by Redwood, you can specify your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410495″>FTPdropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410478″>IP address your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410505″>passive connection requests is not routable through the Internet, you’ll need to enter your public
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It’s worth noting that other dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410482″>File Transfer Protocol (dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410496″>data transfers.
As in dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410500″ data-dropdown-placement-param=”top” data-term-id=”295410500″> FTP, the client initiates the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410475″>FTP client connects to the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410483″>TCP port 21. But instead of sending the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410481″>PASV command. This tells the server that the client wishes to transfer files using dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410492″>random port from its own set of ports for the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410490″>server port to connect to for the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410485″>data channel connection. The client connects from a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410493″>data port specified by the server in step 1. Once the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410496″>data transfers and
You’re ready to discuss the firewall considerations you need to make when dealing with FTP in either active or passive mode.
dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall responds to an dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410489″>Client-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall configurations are lenient to outbound connections but more restrictive when it comes to inbound connections. So, for example, if you have a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall and an dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410472″>FTP server at port 21, the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall’s point of view, the connection attempt is outbound.
In fact, from any dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall’s point of view, all FTP dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410475″>FTP clients shouldn’t have a problem establishing a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410472″>FTP server. However, the same thing can’t be said for dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410500″>active modedropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410476″>data connection. Since the connection is inbound from the
So, if a user encounters a connectivity issue while attempting to connect to your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410474″>active mode.
If it is, a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall is likely block the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410489″>client-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410499″>Microsoft dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall to check would be your user’s dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall.
You’re less likely to encounter similar issues with a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410503″>FTPdropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410473″>Passive dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410509″ data-dropdown-placement-param=”top” data-term-id=”295410509″> works better with dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewalls because both the command connection and the dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall’s point of view, all connection attempts are outbound.
All right, that’s for client-side firewalls. Before we do server-side firewalls, here’s a friendly reminder that you can test JSCAPE features inside your own environment with support from a product expert. Click here to request your no-obligation, risk-free trial.
dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewalls
When you deploy an dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410475″>FTP clients to connect with that server. That means you’ll want to open port 21 on that dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410498″>command channel connection attempt to pass through. But how about
Normally, a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall won’t pose any problems to dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410500″ data-dropdown-placement-param=”top” data-term-id=”295410500″> dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410477″ data-dropdown-placement-param=”top” data-term-id=”295410477″> connections. That’s because the connection attempt is directed to the client, which means, from the
Since a dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410506″ data-dropdown-placement-param=”top” data-term-id=”295410506″> FTP dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall should block that attempt, right? Generally speaking, yes. That’s why you should explicitly open a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410506″>passive mode
dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410473″>Passive FTP – Which is better?
Based on our discussion above, connection issues can happen on a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall or a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall. Apparently, a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall would normally block dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410500″ data-dropdown-placement-param=”top” data-term-id=”295410500″> FTP dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410506″>passive modedropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410476″>data connection attempts.
One way to address an dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410500″ data-dropdown-placement-param=”top” data-term-id=”295410500″> dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410477″ data-dropdown-placement-param=”top” data-term-id=”295410477″> connectivity issue is to allow inbound connections to certain dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410492″>random ports on your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall. Similarly, one way to address a dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410506″ data-dropdown-placement-param=”top” data-term-id=”295410506″> dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410477″ data-dropdown-placement-param=”top” data-term-id=”295410477″> connectivity issue is to allow inbound connections to certain dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410489″>client-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewalls. So, while opening dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410489″>client-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410500″>active modedropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410477″>FTPdropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410506″>passive modedropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410491″>server-side dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall settings there. So, yes, we recommend you use dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410506″ data-dropdown-placement-param=”top” data-term-id=”295410506″> FTP moving forward. It’s going to be much easier to avoid connectivity issues that way.
Security considerations when setting up dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410492″>random ports on your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall, know that opening ports in wanton abandon can increase your exposure to internet-based cyber threats. The right approach is to configure a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410472″>FTP server for dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410506″ data-dropdown-placement-param=”top” data-term-id=”295410506″> FTP dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410501″>range of ports on your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410473″>passive dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410495″ data-dropdown-placement-param=”top” data-term-id=”295410495″> port range
The specific number of ports you need to open for dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410505″>passive connections. While no hard and fast rules dictate the ideal number of ports comprising a port range, you will want to project your maximum number of concurrent users and allocate a sizable allowance based on that estimate.
Your JSCAPE MFT Server by Redwood, you can specify your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410495″>FTPdropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410478″>IP address your dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410505″>passive connection requests is not routable through the Internet, you’ll need to enter your public
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Normally, a dropdown#toggle” data-dropdown-placement-param=”top” data-term-id=”295410470″>firewall won’t pose any problems to dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410500″ data-dropdown-placement-param=”top” data-term-id=”295410500″> dropdown#toggle” data-dropdown-menu-id-param=”menu_term_295410477″ data-dropdown-placement-param=”top” data-term-id=”295410477″> connections. That’s because the connection attempt is directed to the client, which means, from the