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The user cannot log in to the Serv-U SFTP via Gateway

This article describes a scenario where SFTP users cannot authenticate to Serv-U via Gateway

First published date

9/3/2021 12:46 AM

Last published date

9/3/2021 12:46 AM

Overview

This applies to the following scenario.

Can connect to the SFTP but is unable to authenticate
Global level server activity showing it is attempting to connect but cannot authenticate
SFTP client showing access denied even username or password is correct
Login credentials works when testing it to connect directly to Serv-U MFT
Serv-U hosting multiple domains with a single Gateway server or IP

Product section

Serv-U Managed File Transfer & Serv-U FTP Server

Cause

The Serv-U Gateway IP listener is configured on both domains listening on the same port 22
When it happens, the connection usually goes to the primary domain in Serv-U (first created domain)

Resolution

Make sure that each Domain is listening to a unique IP or ports
If the Gateway has a single IP only and needs to configure to all domains hosted in Serv-U, you can define different port numbers (ex., SFTP port 22 can be port 2222 on other domains)
Disable the Gateway listener on the domain that should not be listening to the SFTP

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