Recommended stable releases for ProxySG and Advanced Secure Gateway (SGOS)


Article ID: 169724


Updated On:


Advanced Secure Gateway Software - ASG ProxySG Software - SGOS


When upgrading the following, you want to know which releases are most stable compared to other releases. While a release may have new features and functionality, you may consider it less stable for your network environment.

  • Symantec Network Protection Services (NPS)
  • Symantec ProxySG
  • Symantec Advanced Secure Gateway (ASG)


There are several types of releases of SGOS for ProxySG and ASG, which offer various levels of stability vs features.

Long Term Release (LTR)

This type of release is considered the most stable, with the following goals: stability, reliability, fit-for-use, FIPS/CC certified, and customer satisfaction.

  • Release frequency* - Usually available monthly, but could be around 2-3 months.
  • Stability - Considered stable. The recommended release for more customers.

Standard Release (STDR)

This type of release is often considered for its new features, with goals to increase stability and provide security fixes.

  • Release frequency* - Available approximately every 3 months (estimated).
  • Stability - Stable, but not as stable as the LTR. Symantec recommends staying on the latest release to take advantage of all fixes. This release is recommended only if you require a feature not found in the LTR.

Latest Feature Release

This type of release is the most recent, and generally would not be considered stable. Normally, the focus on this type of release is on feature enhancements. Currently, however, the latest feature release is becoming more stable than generally expected as it is transitioning into its role as Long Term Release (LTR). Therefore, at this time Symantec recommends considering upgrading to the latest feature release for stability as well.

  • Release frequency* - Availability unknown, but is usually released when fixes can be resolved.
  • Stability - Sacrifices stability for features.
    • Symantec highly recommends upgrading with new releases to move toward stability.
    • Symantec recommends this release when you require a feature not found in the LTR or Standard release.

Early Availability Release (EA)

This type of release is available early for customers to use in a lab environment. This allows you to test the changes and see how they will affect your current network traffic behavior

  • Stability - Tends to have many new features which require testing before being used in a production environment.
*The frequency of releases is subject to change.

Note: Symantec always recommends staying on the latest patch release, on the current branch release you are running, unless a specific fix or feature is required in another release or the current branch release is nearing EOL.

For example:

  • If you are on 6.5.x upgrade to the latest 6.7 patch release (6.5 is EOL Apr 30, 2020).
  • If you are on 6.6.x upgrade to the latest 6.7 patch release (6.6 is EOL Dec 31, 2019). 
  • If you are on 6.7.3.x upgrade to the latest 6.7.5 patch release.
  • If you are on the 6.7.4.x upgrade to the latest 6.7.4 (or 6.7.5) patch release
  • If you are on 7.1.x upgrade to the latest 7.2.x (or 7.3.x) maintenance release.
  • If you are on 7.2.x upgrade to the latest 7.2.x maintenance release.
  • If you are on 7.3.x upgrade to the latest 7.3.x maintenance release.

Current releases

  • The New LTR is 6.7.x, the newest branch being 6.7.5.x and later.
  • Support strongly recommends upgrading to 6.7.5.x since and later is supported by ISG/SSP-S410 platform.
  • The STDR is 7.2.x
  • The Feature release is 7.3.x
  • Support recommends that you thoroughly vet and test 7.3.x and 7.2.x in a lab environment prior to deploying the release into production. This is recommended due to major feature changes in this release.

Contact Support for more information about the current LTR, STDR, and Feature releases.

Additional information

See Network Protection EOL Policies.

See Upgrade and downgrade information for ProxySG and Advanced Secure Gateway (SGOS).