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syslog-ng Store Box 7.4.0 - Administration Guide

Preface Introduction The concepts of SSB The Welcome Wizard and the first login Basic settings User management and access control Managing SSB Configuring message sources Storing messages on SSB Forwarding messages from SSB Log paths: routing and processing messages Configuring syslog-ng options Searching log messages Searching the internal messages of SSB Classifying messages with pattern databases The SSB RPC API Monitoring SSB Troubleshooting SSB Security checklist for configuring SSB Glossary

Generating TSA certificate with Windows Certificate Authority on Windows Server 2008

To generate a TSA certificate with Windows Certificate Authority (CA) that works with syslog-ng Store Box (SSB), generate a CSR (certificate signing request) on a computer running OpenSSL and sign it with Windows CA, then import this certificate into SSB for time stamping.

Prerequisites:

A valid configuration file for OpenSSL with the following extensions:

[ tsa_cert ]
extendedKeyUsage = critical,timeStamping

TIP: You can copy /etc/ssb/openssl-ca.cnf from SSB to the computer that will be used for signing. Rename the file to openssl-temp.cnf.

The TSA certificate is considered valid, in terms of compatibility with SSB, if the following conditions are met:

  • Must be a valid CA certificate (CA is true).

  • Key Usage: Time Stamping is required. No other key usage is permitted.

  • Extended Key Usage: Must be set to critical.

  • Optional Key Usage: If Key Usage is present, it must be digitalSignature and/or nonRepudiation. Other values are not permitted. Make sure that in Encryption, Allow key exchange without key encryption (key agreement) is selected.

    Caution:

    In Encryption, do NOT select Allow key exchange only with key encryption (key encipherment), because it will result in errors.

The following X509v3 extensions are supported:

  • Hard requirement:

    X509v3 Extended Key Usage must be critical, and must only contain Time Stamping.

  • Optional:

    X509v3 Key Usage, if present, must be digitalSignature and/or nonRepudiation.

To generate TSA certificate with Windows Certificate Authority on Windows Server 2008

  1. Create CSR using the new configuration file: openssl req -set_serial 0 -config openssl-temp.cnf -reqexts tsa_cert -new -newkey rsa:2048 -keyout timestamp.key -out timestamp.csr -nodes

  2. Complete the required fields according to your environment:

    Generating a 2048 bit RSA private key
    ........................+++
    ......................................+++
    writing new private key to 'timestamp.key'
    -----
    You are about to be asked to enter information that will be incorporated
    into your certificate request.
    What you are about to enter is what is called a Distinguished Name or a DN.
    There are quite a few fields but you can leave some blank
    For some fields there will be a default value,
    If you enter '.', the field will be left blank.
    -----
    Country Name (2 letter code) [AU]:HU
    State or Province Name (full name) []:Budapest
    Locality Name (eg, city) []:Budapest
    Organization Name (eg, company) [Internet Widgits Pty Ltd]:BalaBit IT Security
    Organizational Unit Name (eg, section) []:Service Delivery
    Common Name (eg, YOUR name) []:scb35-1-i1.tohuvabohu.balabit
    Email Address []:vlad@balabit.com
  3. Sign the generated CSR with your Windows CA. Make sure that the CSR file is accessible from your Windows CA server.

    1. To issue and sign the new certificate request, open the Microsoft Certification Authority Management Console: Start > Run and run certsrv.msc.

    2. Right-click on the server name and navigate to All Tasks > Submit new request.

      Figure 105: Submitting a new request

    3. Select the CSR created in the second step.

    4. On the left pane, click Pending Requests. The new certificate request is displayed in the right pane.

      Figure 106: Issuing a new certificate

    5. To issue the new SSL certificate, right-click the pending certificate request, select All Tasks and click Issue.

    6. Select Issued Certificates and double-click on the certificate issued in the previous step.

    7. The CA Certificate window opens. Navigate to the Details tab. Ensure that the required Enhanced Key Usage field is visible and contains the Time Stamping value.

      Figure 107: Verifying certificate details

    8. Click Copy to File. The Certificate Export Wizard launches. Click Next.

    9. Select the format of the certificate: Base-64 encoded X.509 (.CER). Click Next.

      Figure 108: Selecting certificate file format

    10. Select location to save the certificate, and save it.

    11. The Completing the Certificate Export Wizard screen is displayed. Click Finish.

  4. In SSB, navigate to Basic Settings > Management > SSL certificate.

  5. Click next to TSA X.509 certificate, browse for the previously generated certificate, and click Upload.

  6. Click next to TSA private key, browse for the previously generated key, and click Upload.

    NOTE: If the root CA (the CA X.509 certificate field under Basic Settings > Management > SSL certificate) that is used for other certificates on SSB is different from the CA that was used to sign the TSA certificate, a warning appears. In this case, ignore this warning.

Generating TSA certificate with Windows Certificate Authority on Windows Server 2012

To generate a TSA certificate with Windows Certificate Authority (CA) that works with syslog-ng Store Box (SSB), generate a CSR (certificate signing request) on a computer running OpenSSL and sign it with Windows CA, then import this certificate into SSB for time stamping.

Prerequisites:

A valid configuration file for OpenSSL with the following extensions:

[ tsa_cert ]
extendedKeyUsage = critical,timeStamping

TIP: You can copy /etc/ssb/openssl-ca.cnf from SSB to the computer that will be used for signing. Rename the file to openssl-temp.cnf.

The TSA certificate is considered valid, in terms of compatibility with SSB, if the following conditions are met:

  • Must be a valid CA certificate (CA is true).

  • Key Usage: Time Stamping is required. No other key usage is permitted.

  • Extended Key Usage: Must be set to critical.

  • Optional Key Usage: If Key Usage is present, it must be digitalSignature and/or nonRepudiation. Other values are not permitted. Make sure that in Encryption, Allow key exchange without key encryption (key agreement) is selected.

    Caution:

    In Encryption, do NOT select Allow key exchange only with key encryption (key encipherment), because it will result in errors.

The following X509v3 extensions are supported:

  • Hard requirement:

    X509v3 Extended Key Usage must be critical, and must only contain Time Stamping.

  • Optional:

    X509v3 Key Usage, if present, must be digitalSignature and/or nonRepudiation.

To generate TSA certificate with Windows Certificate Authority on Windows Server 2012

  1. Create CSR using the new configuration file: openssl req -set_serial 0 -config openssl-temp.cnf -reqexts tsa_cert -new -newkey rsa:2048 -keyout timestamp.key -out timestamp.csr -nodes

  2. Complete the required fields according to your environment:

    Generating a 2048 bit RSA private key
    ........................+++
    ......................................+++
    writing new private key to 'timestamp.key'
    -----
    You are about to be asked to enter information that will be incorporated
    into your certificate request.
    What you are about to enter is what is called a Distinguished Name or a DN.
    There are quite a few fields but you can leave some blank
    For some fields there will be a default value,
    If you enter '.', the field will be left blank.
    -----
    Country Name (2 letter code) [AU]:HU
    State or Province Name (full name) []:Budapest
    Locality Name (eg, city) []:Budapest
    Organization Name (eg, company) [Internet Widgits Pty Ltd]:BalaBit IT Security
    Organizational Unit Name (eg, section) []:Service Delivery
    Common Name (eg, YOUR name) []:scb35-1-i1.tohuvabohu.balabit
    Email Address []:vlad@balabit.com
  3. Create and configure a time stamping web server template in the Certificate Authority, and use that to generate the TSA certificate.

    1. Start the Certification Authority Microsoft Management Console, and select the CA server.

    2. Right-click Certificate Templates, and choose Manage.

      Figure 109: Managing certificate templates

      The Certificate Templates Console opens.

    3. Right-click the Web Server template, and choose Duplicate Template.

      Figure 110: Duplicating a Template

      The Properties of New Template window appears.

    4. Make the following changes to the new template:

      • On the General tab, change the Template display name to TSA.

        Figure 111: Creating the new template

      • On the Request Handling tab, enable the Allow private key to be exported option.

      • On the Extensions tab, make the following changes:

        To edit Application Policies

        • Select Application Policies and click Edit below the list of extensions.

          Figure 112: Editing Application Policies

        To remove Server Authentication

        • Select Server Authentication and click Remove.

          Figure 113: Removing Server Authentication

        To add Time Stamping

        • Click Add, select Time Stamping and click OK.

          Figure 114: Adding Time Stamping

        To make Time Stamping critical

        • Select Time Stamping and enable the Make this extension critical option, then click OK.

          Figure 115: Making Time Stamping critical

        Time Stamping and Critical extension are listed in the Description of Application Policies.

        Figure 116: Description of Application Policies

        To edit Key Usage

        1. Select Key usage, click Edit. Enable the Signature is proof of origin (nonrepudiation) option.
        2. Select Allow key exchange without key encryption (key agreement).

        3. Click OK.

        Figure 117: Editing Key Usage

        The following are listed in Description of Key Usage.

        Figure 118: Description of Key Usage

      • On the Security tab, select Authenticated Users, and set Enroll to Allowed.

        Figure 119: Configuring permissions for the template

    5. Click Apply. Click OK. The new TSA template is now displayed in the list of templates.

      Figure 120: The new TSA template is now displayed in the list of templates

    6. Close this window and return to the Certification Authority main screen, and select the Certificate Templates folder.

      Figure 121: Certificate Templates

      Right-click under the list, and choose New > Certificate Template to Issue.

      Figure 122: Certificate Template to Issue

      The Enable Certificate Templates window is displayed.

      Figure 123: Enable the new template

    7. Select the TSA certificate template, and choose OK. Close this window.

    8. Open the command line and run the following command:

      certreq -submit -attrib "CertificateTemplate:TSA" <CSR>

      Replace <CSR> with the full path of the CSR created earlier (in the second step).

    9. The Certification Authority List is displayed. Select the CA.

    10. The Save Certificate window is displayed. Choose an output folder.

      The certificate is generated to the specified folder.

  4. In SSB, navigate to Basic Settings > Management > SSL certificate.

  5. Click next to TSA X.509 certificate, browse for the previously generated certificate, and click Upload.

  6. Click next to TSA private key, browse for the previously generated key, and click Upload.

    NOTE: If the root CA (the CA X.509 certificate field under Basic Settings > Management > SSL certificate) that is used for other certificates on SSB is different from the CA that was used to sign the TSA certificate, a warning is displayed. In this scenario, ignore this warning.

Creating hostlist policies

The syslog-ng Store Box (SSB) appliance can use a list of host and network addresses at a number of places, for example for limiting the client that can send log messages to a log source, or the hosts that can access shared logspaces.

Creating hostlists

This section describes how to create a new hostlist.

To create a new hostlist

  1. Navigate to Policies > Hostlists and click (Add row).

  2. Enter a name for the hostlist (for example, servers).

    Figure 124: Policies > Hostlists — Creating hostlists

  3. Enter the IP address of the permitted host into the Match > Address field. You can also enter a network address in the IP address/netmask format (for example 192.168.1.0/24). To add more addresses, click and repeat this step.

  4. To add hosts that are excluded from the list, enter the IP address of the denied host into the Ignore > Address field.

    TIP: To add every address except for a few specific hosts or networks to the list, add the 0.0.0.0/0 network to the Match list, and the denied hosts or networks to the Ignore list.

  5. Click .

    NOTE: If you modify a hostlist, you must only restart syslog-ng if a host, which is already connected, must be ignored with a hostlist. Navigate to Basic Settings > System > Service control > Syslog traffic, indexing & search: and select Restart syslog-ng for the changes to take effect.

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