08-09-2001
No, it does not really lower the load on Apache servers. It is just a fun idea
When default.ida does not exist, the return code is 400:
Quote:
128.146.87.135 - - [19/Jul/2001:16:46:10 -0400] "GET /default.ida?NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN%u9090%u6858%ucbd3%u7801%u9090%u6858%ucbd3%u7801%u9090%u6858%ucb d3%u7801%u9090%u9090%u8190%u00c3%u0003%u8b00%u531b%u53ff%u0078%u0000%u00=a HTTP/1.0" 400 252
After redirect the return code is 302:
Quote:
64.95.192.98 - - [09/Aug/2001:17:01:01 -0400] "GET /default.ida?XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX%u9090%u6858%ucbd3%u7801%u9090%u6858%ucbd3%u7801%u9090%u6858%ucb d3%u7801%u9090%u9090%u8190%u00c3%u0003%u8b00%u531b%u53ff%u0078%u0000%u00=a HTTP/1.0" 302 567
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LEARN ABOUT CENTOS
crlhelper
crlhelper(8) crlhelper(8)
NAME
crlhelper - Helper program used to store-and-forward CRLs
SYNOPSIS
crlhelper <semid> <parentpid> <directory> [prefix]
DESCRIPTION
A helper program used by the Apache httpd mod_revocator plug-in to store-and-forward CRLs from upstream to the various Apache processes in
the preform MPM. This saves each process from having to fetch the CRL itself. This is not expected to be run by end-users.
The mod_revocator plug-in requires the mod_nss plug-in to also be registered with this Apache httpd process.
Whenever an Apache httpd process configured to use the mod_revocator plug-in is started, this program will be automatically invoked via
reference to the mod_revocator configuration file stored under /etc/httpd/conf.d/revocator.conf which contains the following default entry:
# CRL Helper:
# This helper program does the actual CRL retrieval
#
# NOTE: Located at '/usr/bin/crlhelper' prior
# to 'mod_revocator-1.0.3-16'.
#
CRLHelper /usr/libexec/crlhelper
OPTIONS
<semid>
The semaphore which corresponds to the mod_revocator plug-in registered with the Apache httpd process during startup.
<parentpid>
The primary parent pid of the Apache httpd process into which both the mod_nss and mod_revocator plug-ins have been loaded.
<directory>
Since the mod_revocator plug-in depends upon the mod_nss plug-in being configured, this option specifies the destination directory
of the NSS databases that will be associated with this executable specified by the following entry in the mod_nss plug-in's
/etc/httpd/conf.d/nss.conf configuration file:
# Server Certificate Database:
# The NSS security database directory that holds the
# certificates and keys. The database consists
# of 3 files: cert8.db, key3.db and secmod.db.
# Provide the directory that these files exist.
NSSCertificateDatabase /etc/httpd/alias
[prefix]
Optional prefix to attach prior to the names of the NSS certificate and key databases contained in the directory referenced by the
previous argument and specified by the following entry in mod_nss plug-in's /etc/httpd/conf.d/nss.conf configuration file (must be
uncommented in order to be utilized):
# Database Prefix:
# In order to be able to store multiple NSS databases
# in one directory they need unique names. This option
# sets the database prefix used for cert8.db and key3.db.
#NSSDBPrefix my-prefix-
BUGS
Report bugs to http://bugzilla.redhat.com.
AUTHORS
Rob Crittenden <rcritten@redhat.com>.
COPYRIGHT
Copyright (c) 2013 Red Hat, Inc. This is licensed under the Apache License, Version 2.0 (the "License"); no one may use this file except in
compliance with the License. A copy of this license is available at http://www.apache.org/licenses/LICENSE-2.0.
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITH-
OUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and
limitations under the License.
Rob Crittenden Jul 3 2013 crlhelper(8)