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Configure Serv-U and Serv-U gateway

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Updated November 7th, 2016

 

Overview

This article provides brief information and steps to resolve the issue when the Serv-U server cannot access the Serv-U Gateway.

Resolution

 

Make sure that you meet the following requirements so that Serv-U Server can communicate with Serv-U Gateway:

  • Port 1180 must be open on Serv-U Gateway so that Serv-U can access the Gateway.
  • If Serv-U Gateway only has a public IP address, add the IP address of Serv-U to the CIDR text file of the Gateway, so that the Gateway can accept connections from Serv-U.
  • Verify that Serv-U and Serv-U Gateway have IP addresses which can communicate with each other.

The following setups are supported:

  • Serv-U with Public IP --> Gateway with Public IP with CIDR
  • Serv-U with Private IP --> Gateway with Public IP with CIDR
  • Serv-U with Private IP --> Gateway with Private IP

The following setup is not supported:

  • Serv-U with Public IP --> Gateway with Private IP

The following image shows an example configuration if you use one Gateway for two Serv-U servers:

 

KB2162.png

 

Serv-U:

  • Serv-U listeners: DMZ IP D:80
  • Serv-U listeners: DMZ IP D:81

NAT:

  • Port forwarding from Public IP F:80 to DMZ IP D:80
  • Port forwarding from Public IP F:81 to DMZ IP D:81

According to the IANA definition, the following ranges are private IP addresses:

  • 10.0.0.0 - 10.255.255.255 (10/8 prefix)
  • 172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
  • 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)

 

If using a NAT:

Normally the entries on the Serv-U gateway set-up will have the same IP which is an internal IP.

For example: gw ip: 192.168.255.117, then the public IP will be: 192.168.255.117 if that is the same NAT IP.

Then on the listeners same thing, use the internal IP if needed.

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