This article describes how to configure Microsoft Internet Explorer or in Windows Internet Explorer to use both the File Transfer Protocol (FTP) PORT mode and PASV mode.
FTP supports two modes. These modes are called Standard (or PORT or Active) and Passive (or PASV). The Standard mode FTP client sends PORT commands to the FTP server. The Passive mode client sends PASV commands to the FTP Server. These commands are sent over the FTP command channel when establishing the FTP session.
Standard mode FTP clients first establish a connection to TCP port 21 on the FTP server. This connection establishes the FTP command channel. The client sends a PORT command over the FTP command channel when the FTP client needs to send or receive data, such as a folder list or file. The PORT command contains information about which port the FTP client receives the data connection on. In Standard mode, the FTP server always starts the data connection from TCP port 20. The FTP server must open a new connection to the client when it sends or receives data, and the FTP client requests this by using the PORT command again.
Passive mode FTP clients also start by establishing a connection to TCP port 21 on the FTP server to create the control channel. When the client sends a PASV command over the command channel, the FTP server opens an ephemeral port (between 1024 and 5000) and informs the FTP client to connect to that port before requesting data transfer. As in Standard mode, the FTP client must send a new PASV command prior to each new transfer, and the FTP server will await a connection at a new port for each transfer.
You may have to change the mode that is used by the FTP client, depending on the firewall configuration on either the FTP client or the server. Microsoft Internet Explorer 5 and later versions support both Standard mode and Passive mode.
How to change the Internet Explorer FTP Client mode
1. Start Internet Explorer.
2. On the Tools menu, click Internet Options.
3. Click the Advanced tab.
4. Under Browsing, click to clear the Enable folder view for FTP sites check box.
5. Click to select the Use Passive FTP (for firewall and DSL modem compatibility) check box.
6. Click OK.
Internet Explorer behaves as a Standard mode FTP client if you select the Enable folder view for FTP sites check box, even if you also select the Use Passive FTP check box. If you clear the Enable folder view for FTP sites check box and then select the Use Passive FTP check box, Internet Explorer behaves as a Passive mode FTP client.
1) Never put anything in an email that you wouldn't want posted on the lunch room bulletin board.
2) Treat email like a written memo; it's a business record.
3) Never use offensive or vulgar language in an email.
4) Beware what you write; your email can be forwarded to others (accidentally or otherwise).
5) Be careful that the tone of the words is what you want. Consider being over-polite to avoid misinterpretation. (and "let the ink dry" before sending if you are angry when you composed it.)
6) Business is not the place to forward jokes; others may be offended or tired of the interruptions.
Top Ten E-Messes
You inadvertently send porn to your boss:
You receive a picture that you just know your friend Daniel will appreciate. While no one is around, you quickly forward it to him using the function to recognise the name. Daniel doesn't reply, and when you quiz him about it later that evening, you realise he didn't receive it.
Frantically checking your sent items the following day, you realise that the explicit image was sent to Dani, your boss.
You did not secure the salary information document:
HR sends to you the salary breakdowns for 2002, and while reviewing them you realise changes need to be made. You re-save the document, and send it back to HR. Unfortunately, you have saved the document in the company network file name: Salaries.
You swear about your client in an email to a colleague at work:
Your client has been irritating you with their unrealistic demands and constant complaining. You vent your frustration in an email to your colleague, where 'no holds are barred' about your views. But in anger and because you have your client on your mind you send it to him instead. You lose the account the following week.
You forward a joke:
You receive a joke from your old friend, who can always be relied on to provide the best jokes they always go down well. You don't have time to read it through, but send it onto your colleagues so they don't miss out. The racist comment at the end of the email is not appreciated, and sent immediately to HR with a complaint.
Ruining your company's reputation:
You send a MPEG that only a few select friends would appreciate you're very careful about that. Your friends forward it onto a select group, too, and the chain goes on and on. In the end, over 300 people have received an email with your company name, address and URL with a shocking attachment. Not the sort of campaign your marketing department had in mind.