---
title: "107sr module connection refused?"
url: "https://maker.wiznet.io/forum/10431"
markdown_url: "https://maker.wiznet.io/forum/10431/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "djdjdjole"
created: "2014-08-05T16:20:03+09:00"
last_activity: "2017-05-04T08:33:33+09:00"
language: "en"
views: 421
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# 107sr module connection refused?

## Question

Asked by djdjdjole on 2014-08-05 in Serial-to-Ethernet & ConfigTool.

When I use 107sr module, I have situations when my program is blocked (intentionally stopped to eliminate
doubts related to program) and some TCP client tries to connect (via Hercules utility), I got info Client connected
and two seconds later, Connection closed. This utility doesn’t provide some detailed info, other then quoted one.
Any hint ?

Regards
PS Module is all the time in server mode- info provided by Wiznet config utility

## Replies

### Reply 1 by jameskim, 2014-08-05

Hello Guy,

WIZ107SR has “Connection Password” function.
If you search your module with WIZ107_108SR Configuration tool, then you can find it on “OPTION” Tab.
When WIZ107SR works in Server mode, it wait for “connection password” from its client within 2 seconds after its connection is established.
If it receives its correct password within that time, it sustains its connection.
Otherwise, it closes its connection.

Thank you.

James.

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Source: https://maker.wiznet.io/forum/10431