使用Microsoft Visual Studio 2017 Community无法FTP连接远程服务器

It sounds like you're hitting a common snag when switching from Dreamweaver's straightforward FTP workflow to Visual Studio 2017's server connection system. Let's walk through targeted fixes for that Could not connect to 'ec2-{IP address}' error, especially since you've already confirmed your FTP credentials work in a browser.

1. Double-check VS 2017's FTP Protocol & Port Settings #

VS's "Connect To Server" wizard sometimes defaults to auto-detecting protocols, which can misfire with EC2's FTP setup. Try forcing explicit FTP settings:

• When in the "Add Server" dialog, look for Advanced Options (it might be tucked behind an expandable menu)
• Set the connection protocol to FTP (not SFTP or auto-detect)
• Verify the port: standard FTP uses 21, but if your server uses a custom port, make sure you input that here. Also, if you're using passive FTP, ensure your EC2 security group allows inbound traffic on the passive port range (usually 1024–65535).

2. Rule Out Security Blockages #

Even if your browser connects, VS's FTP client might be blocked by local or cloud-side security rules:

• Local firewall/antivirus: Temporarily disable your local security tools to see if they're intercepting VS's FTP traffic. Some tools flag IDE connections as untrusted by default.
• EC2 Security Groups: Double-check your instance's security group inbound rules. Confirm you've allowed your local public IP to access port 21 (control port) and the passive FTP port range. Don't forget to save any changes to the security group.

3. Use VS's Publish Feature Instead of "Connect To Server" #

The "Connect To Server" tool in VS 2017 can be finicky for FTP. Try the dedicated Publish workflow, which often handles FTP connections more reliably:

• Right-click your folder in the Solution Explorer - Folder View
• Select Publish
• Choose FTP as the publish target
• Fill in your EC2 IP, FTP username/password, site path, port, and enable passive mode if needed. Click Validate Connection to test before proceeding.

4. Check Server-Side FTP Configurations #

Your EC2's FTP service might have restrictions that block VS's connection:

• If you're using a service like vsftpd, check its config file (usually /etc/vsftpd.conf) to ensure passive mode is enabled (pasv_enable=YES) and the passive port range is set (pasv_min_port/pasv_max_port). Also, confirm pasv_address is set to your EC2's public IP.
• Review server logs (e.g., /var/log/vsftpd.log for vsftpd) for specific error messages related to VS's connection attempt—this can reveal issues like invalid user permissions or protocol mismatches.

5. Update or Repair Visual Studio 2017 #

Older builds of VS 2017 had known bugs with FTP connectivity:

• Go to Tools > Extensions and Updates to check for updates to the FTP tools or the IDE itself.
• If updates don't help, repair your VS installation via the Control Panel: Find "Microsoft Visual Studio Community 2017", select Modify, then choose Repair to fix any corrupted components.

内容的提问来源于stack exchange，提问作者Vince De Mello