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Upgrading

General instructions

Suricata can be upgraded by simply installing the new version to the same locations as the already installed version. When installing from source, this means passing the same --prefix, --sysconfdir, --localstatedir and --datadir options to configure.

$ suricata --build-info|grep -A 3 '\-\-prefix'
    --prefix                                 /usr
    --sysconfdir                             /etc
    --localstatedir                          /var
    --datarootdir                            /usr/share

Configuration Updates

New versions of Suricata will occasionally include updated config files: classification.config and reference.config. Since the Suricata installation will not overwrite these if they exist, they must be manually updated. If there are no local modifications they can simply be overwritten by the ones Suricata supplies.

Major updates include new features, new default settings and often also remove features.

Upgrading 5.0 to 6.0

  • SIP now enabled by default
  • RDP now enabled by default
  • ERSPAN Type I enabled by default.

Major changes

  • New protocols enabled by default: mqtt, rfb
  • SSH Client fingerprinting for SSH clients
  • Conditional logging
  • Initial HTTP/2 support
  • DCERPC logging
  • Improved EVE logging performance

Removals

  • File-store v1 has been removed. If using file extraction, the file-store configuration will need to be updated to version 2. See filestore-update-v1-to-v2.
  • Individual Eve (JSON) loggers have been removed. For example, stats-json, dns-json, etc. Use multiple Eve logger instances if this behavior is still required. See multiple-eve-instances.
  • Unified2 has been removed. See unified2-removed.

Upgrading 4.1 to 5.0

Major changes

  • New protocols enabled by default: snmp (new config only)
  • New protocols disabled by default: rdp, sip
  • New defaults for protocols: nfs, smb, tftp, krb5 ntp are all enabled by default (new config only)
  • VXLAN decoder enabled by default. To disable, set decoder.vxlan.enabled to false.
  • HTTP LZMA support enabled by default. To disable, set lzma-enabled to false in each of the libhtp configurations in use.
  • classification.config updated. ET 5.0 ruleset will use this.
  • decoder event counters use 'decoder.event' as prefix now. This can be controlled using the stats.decoder-events-prefix setting.

Removals

  • dns-log, the text dns log. Use EVE.dns instead.
  • file-log, the non-EVE JSON file log. Use EVE.files instead.
  • drop-log, the non-EVE JSON drop log.

See https://suricata-ids.org/about/deprecation-policy/