Ipv4 And Ipv6 Connection Problems - Fuji Xerox DocuCentre-IV 2060 Administrator's Manual

15 Problem Solving
When connection to a desired Web server fails

IPv4 and IPv6 Connection Problems

Unable to connect using an IPv4 address
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Cause
Cannot access the proxy
server, firewall, or Web
server as a result of access
control.
Cause
The setting to use the proxy
server is not configured.
The setting to use a proxy
server is configured even
though the environment does
not use a proxy server.
The proxy server address is
incorrect.
When the proxy server
access requires
authentication, you cannot
connect to the server
because the user name or
password is incorrect.
The possible causes and remedies for problems when using an IPv4 or IPv6 address
are as follows:
Symptom
When 0 (zero) is prepended
to the head of a value for the
IPv4 address (for example:
124.249.010.033),
connection fails.
Remedy
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.)
Remedy
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.
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.
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.
Set the user name and password on the machine that allow
connection to the proxy server.
Remedy
Do not prepend 0 (zero) to each value of an IPv4 address.