Allowing FTP Upload/Download Through ISA Server: step by step

  1. Open ISA Management Console
  2. Create a new Access rule, Right click Firewall Policy , then click on New then choose Access Rule ( If you already have a Firewall Policy for the FTP Protocol, then skip these steps and jump to step 13)
  3. The New Access Rule Wizard will be launched, give a name to your new rule , in this example we will name it Allow FTP R/W (Read/ Write), then click Next
  4. In the Rule Action page, we choose which action we want to grant for our users, in this example we want to grant them the FTP access, so we choose Allow, then click Next
  5. In the Protocols page, From the drop down list of This Rule Applies To, choose Selected Protocolsclick on Add button, the Add Protocol page will open,  Open All Protocols and choose the FTP protocol and click on Add , then click Close
  6. The FTP Protocol will be selected , click Next
  7. On the Access Rule Sources page, click the Add button. In the Add Network Entities dialog box, click on the Networks folder. Double click on the Internal network, then click the Close button in the Add Network Entities dialog box. Click Next in the Access Rule Sources dialog box.
  8. Click the Add button on the Access Rule Destinations page. In the Add Network Entities dialog box, click the Networks folder. Double click the External entry and click Close in the Add Network Entities dialog box. Click Next on the Access Rule Destinations page.
  9. On the User Sets page, accept the default setting of All Users.
  10. Review your settings and click Finish on the Completing the New Access Rule Wizard page.
  11. Click the Apply button to save the changes and update the firewall policy. This button is located at the top of the Details pane (the middle pane) of the console.
  12. The rule you have just created will only permit you to download anything from the FTP sites you visit, but will not allow you to upload, in order to have the ability to upload, follow the following steps
  13. Right click your FTP Rule, then click on Configure FTP
  14. In this page, remove the tick beside the Read Only, then click OK
  15. Click the Apply button to save the changes and update the firewall policy.
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