Fuji Xerox ApeosPort-IV C5580, ApeosPort-IV C6680, ApeosPort-IV C7780, DocuCentre-IV C5580, DocuCentre-IV C6680, DocuCentre-IV C7780 Administrator Guide

IPv4 and IPv6 Connection Problems

IPv4 and IPv6 Connection Problems

15 Problem Solving
464
P
r
oblem S
o
lv
ing
15
When connection to a desired Web server fails
IPv4 and IPv6 Connection Problems
The possible causes and remedies for problems when using an IPv4 or IPv6 address 
are as follows:
Unable to connect using an IPv4 address
Cannot access the proxy 
server, firewall, or Web 
server as a result of access 
control.
The following types of access control are used. Confirm the
configured access control.
Address (port) restriction
SSL restriction
User access restriction (including access right levels)
Content block
Scheme restriction (cannot use HTTP etc.)
Transfer data size restriction
Method restriction (cannot use POST etc.)
HTTP header restriction (only accepting specified 
browsers etc.)
Time restriction (only available during a specific period of 
time etc.)
Cause
Remedy
The setting to use the proxy 
server is not configured.
In the environment using the proxy server, you must 
configure the machine to use the proxy server to connect to 
a desired Web server. Make sure that you configure the 
settings to use the proxy server.
The setting to use a proxy 
server is configured even 
though the environment does 
not use a proxy server.
In an environment that does not use a proxy server, such as 
when connecting to an intranet, do not make the settings to 
use the proxy server.
The proxy server address is 
incorrect.
When the settings to use a proxy server are configured, you 
cannot connect to a desired Web server only if the IP 
address of the proxy server is correct. Set the correct IP 
address of the proxy server.
When the proxy server 
access requires 
authentication, you cannot 
connect to the server 
because the user name or 
password is incorrect.
Set the user name and password on the machine that allow 
connection to the proxy server.
Symptom
Remedy
When 0 (zero) is prepended 
to the head of a value for the 
IPv4 address (for example: 
124.249.010.033), 
connection fails.
Do not prepend 0 (zero) to each value of an IPv4 address.
Cause
Remedy