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Update README
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README.rst
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README.rst
@ -17,9 +17,10 @@ eventually support PKCS#11 and in far future WebCrypto.
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.. figure:: doc/usecase-diagram.png
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Certidude is mainly designed for VPN gateway operators to make
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desktop/laptop VPN setup as easy as possible.
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User certificate management eg. for HTTPS is also made reasonably simple.
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Certidude is mainly designed for StrongSwan and OpenVPN gateway operators to make
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VPN client setup on laptops, desktops and mobile devices as painless as possible.
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Certidude can also be used to manage HTTPS client certificates for
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eg. maintaining an extra layer of protection for intranet websites.
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For a full-blown CA you might want to take a look at
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`EJBCA <http://www.ejbca.org/features.html>`_ or
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`OpenCA <https://pki.openca.org/>`_.
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@ -105,18 +106,29 @@ TODO
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Install
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-------
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To install Certidude server:
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To install Certidude server you need certain system libraries in addition to
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regular Python dependencies.
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System dependencies for Ubuntu 16.04:
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.. code:: bash
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apt-get install -y python python-pip python-dev cython \
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apt install -y python python-pip python-dev cython \
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python-cffi python-configparser \
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python-pysqlite2 python-mysql.connector python-ldap \
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build-essential libffi-dev libssl-dev libkrb5-dev \
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ldap-utils krb5-user \
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libsasl2-modules-gssapi-mit \
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libsasl2-dev libldap2-dev
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pip install simplepam pykerberos certidude
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System dependencies for Fedora 24+:
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.. code:: bash
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yum install redhat-rpm-config python-devel openssl-devel openldap-devel
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At the moment package at PyPI is rather outdated.
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Please proceed down to Development section to install Certidude from source.
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Setting up authority
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@ -139,15 +151,6 @@ If necessary tweak machine's fully qualified hostname in ``/etc/hosts``:
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127.0.0.1 localhost
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127.0.1.1 ca.example.com ca
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Then proceed to install `nchan <https://nchan.slact.net/>`_:
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.. code:: bash
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wget https://nchan.slact.net/download/nginx-common.deb \
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https://nchan.slact.net/download/nginx-extras.deb
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dpkg -i nginx-common.deb nginx-extras.deb
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apt-get -f install
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Certidude can set up certificate authority relatively easily.
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Following will set up certificate authority in ``/var/lib/certidude/hostname.domain.tld``,
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configure systemd service for your platform,
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@ -166,27 +169,27 @@ and start the services:
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systemctl restart certidude
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Certificate management
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----------------------
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Setting up PAM authentication
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-----------------------------
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Use following command to request a certificate on a machine:
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Following assumes the OS user accounts are used to authenticate users.
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This means users can be easily managed with OS tools such as ``adduser``, ``usermod``, ``userdel`` etc.
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.. code::
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Make sure you insert `AllowUsers administrator-account-username`
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to SSH server configuration if you have SSH server installed on the machine
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to prevent regular users from accessing the command line of certidude.
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Note that in future we're planning to add command-line interaction
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in which case SSH access makes sense.
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certidude setup client ca.example.com
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If you're planning to use PAM for authentication you need to install corresponding
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Python modules:
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Use following to list signing requests, certificates and revoked certificates on server:
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.. code:: bash
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.. code::
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certidude list
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Use web interface or following to sign a certificate on server:
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.. code::
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certidude sign client-hostname-or-common-name
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pip install simplepam
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The default configuration generated by ``certidude setup`` should make use of the
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PAM.
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Setting up Active Directory authentication
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------------------------------------------
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@ -199,6 +202,7 @@ Install dependencies:
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.. code:: bash
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apt-get install samba-common-bin krb5-user ldap-utils
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pip install pykerberos
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Reset Samba client configuration in ``/etc/samba/smb.conf``, adjust
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workgroup and realm accordingly:
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@ -274,33 +278,58 @@ Common pitfalls:
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the CA machine to domain, eg when you're running CA behind SSL terminating web server:
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Bad credentials: Unspecified GSS failure. Minor code may provide more information (851968)
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Automating certificate setup
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----------------------------
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Ubuntu 14.04 based desktops come with NetworkManager installed.
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Create ``/etc/NetworkManager/dispatcher.d/certidude`` with following content:
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Setting up services
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-------------------
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Set up services as usual (OpenVPN, Strongswan, etc), when setting up certificates
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generate signing request with TLS server flag set.
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Paste signing request into the Certidude web interface and hit the submit button.
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Since signing requests with custom flags are not allowed to be signed
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from the interface due to security concerns, sign the certificate at Certidude command line:
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.. code:: bash
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#!/bin/sh -e
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# Set up certificates for IPSec connection
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certidude sign gateway.example.com
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case "$2" in
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up)
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LANG=C.UTF-8 /usr/local/bin/certidude request spawn -k
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;;
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esac
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Download signed certificate from the web interface or ``wget`` it into the service machine.
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Fetch also CA certificate and finish configuring the service.
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Finally make it executable:
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Setting up clients
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------------------
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This example works for Ubuntu 16.04 desktop with corresponding plugins installed
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for NetworkManager.
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Configure Certidude client in ``/etc/certidude/client.conf``:
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.. code:: ini
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[ca.example.com]
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insecure = true
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trigger = interface up
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Configure services in ``/etc/certidude/services.conf``:
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.. code:: bash
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chmod +x /etc/NetworkManager/dispatcher.d/certidude
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[gateway.example.com]
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authority = ca.example.com
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service = network-manager/openvpn
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remote = gateway.example.com
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Whenever a wired or wireless connection is brought up,
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the dispatcher invokes ``certidude`` in order to generate RSA keys,
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submit CSR, fetch signed certificate,
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create NetworkManager configuration for the VPN connection.
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To request certificate:
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.. code:: bash
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certidude request
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The keys, signing requests, certificates and CRL-s are placed under
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/var/lib/certidude/ca.example.com/
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The VPN connection should immideately become available under network connections.
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Development
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@ -323,7 +352,7 @@ To generate templates:
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.. code:: bash
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apt-get install npm nodejs
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apt install npm nodejs
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sudo ln -s nodejs /usr/bin/node # Fix 'env node' on Ubuntu 14.04
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npm install -g nunjucks@2.5.2
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nunjucks-precompile --include "\\.html$" --include "\\.svg$" certidude/static/ > certidude/static/js/templates.js
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@ -340,3 +369,30 @@ To install the package from the source:
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.. code:: bash
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python setup.py install --single-version-externally-managed --root /
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To uninstall:
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pip uninstall certidude
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Certificate attributes
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----------------------
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Certificates have a lot of fields that can be filled in.
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In any case country, state, locality, organization, organizational unit are not filled in
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as this information will already exist in AD and duplicating it in the certificate management
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doesn't make sense. Additionally the information will get out of sync if
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attributes are changed in AD but certificates won't be updated.
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If machine is enrolled, eg by running certidude request:
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* If Kerberos credentials are presented machine is automatically enrolled
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* Common name is set to short hostname/machine name in AD
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* E-mail is not filled in (maybe we can fill in something from AD?)
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* Given name and surname are not filled in
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If user enrolls, eg by clicking generate bundle button in the web interface:
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* Common name is either set to username or username@device-identifier depending on the 'user certificate enrollment' setting
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* Given name and surname are filled in based on LDAP attributes of the user
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* E-mail not filled in (should it be filled in? Can we even send mail to user if it's in external domain?)
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