Cisco Cisco Expressway Maintenance Manual
n
In the Regex field, use the (?<name>regex) syntax to supply names for capture groups so that
matching sub-patterns can be substituted in the associated Username format field, for example,
/(Subject:.*, CN=(?<Group1>.*))/m
matching sub-patterns can be substituted in the associated Username format field, for example,
/(Subject:.*, CN=(?<Group1>.*))/m
.
.
n
The Username format field can contain a mixture of fixed text and the capture group names used in the
Regex. Delimit each capture group name with #, for example, prefix#Group1#suffix. Each capture
group name will be replaced with the text obtained from the regular expression processing.
Regex. Delimit each capture group name with #, for example, prefix#Group1#suffix. Each capture
group name will be replaced with the text obtained from the regular expression processing.
Username format combinations to a certificate.
Testing client certificates
The
Client certificate testing
page (
Maintenance > Security certificates > Client certificate testing
) is
. You can:
n
Test whether a client certificate is valid when checked against the Expressway's current trusted CA list
and, if loaded, the revocation list (see
and, if loaded, the revocation list (see
).
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Test the outcome of applying the regex and template patterns that retrieve a certificate's authorization
credentials (the username).
credentials (the username).
You can test against:
n
a certificate on your local file system
n
the browser's currently loaded certificate
To test if a certificate is valid:
1. Select the Certificate source. You can choose to:
l
upload a test file from your file system in either PEM or plain text format; if so click Browse to select
the certificate file you want to test
the certificate file you want to test
l
test against the certificate currently loaded into your browser (only available if the system is already
configured to use Certificate validation and a certificate is currently loaded)
configured to use Certificate validation and a certificate is currently loaded)
2. Ignore the
Certificate-based authentication pattern
section - this is only relevant if you are extracting
authorization credentials from the certificate.
3. Click Check certificate.
4. The results of the test are shown in the
Certificate test results
section.
To retrieve authorization credentials (username) from the certificate:
1. Select the Certificate source as described above.
2. Configure the Regex and Username format fields as required. Their purpose is to extract a username
from the nominated certificate by supplying a regular expression that will look for an appropriate string
pattern within the certificate. The fields default to the currently configured settings on the
pattern within the certificate. The fields default to the currently configured settings on the
Certificate-
based authentication configuration
page but you can change them as required.
l
In the Regex field, use the (?<name>regex) syntax to supply names for capture groups so that
matching sub-patterns can be substituted in the associated Username format field, for example,
/(Subject:.*, CN=(?<Group1>.*))/m
matching sub-patterns can be substituted in the associated Username format field, for example,
/(Subject:.*, CN=(?<Group1>.*))/m
.
.
Cisco Expressway Administrator Guide (X8.5)
Page 228 of 394
Maintenance
About security certificates