diff options
| author | Adin Scannell <ascannell@google.com> | 2020-05-15 20:03:54 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-05-15 20:05:18 -0700 |
| commit | 420b791a3d6e0e6e2fc30c6f8be013bce7ca6549 (patch) | |
| tree | 3ce4967bd3b210b7e8e05f0f865105dc88272342 /website/blog/2019-11-18-security-basics.md | |
| parent | 679fd2527bdcaf2ca4dd05dad48a75ffc9400973 (diff) | |
Minor formatting updates for gvisor.dev.
* Aggregate architecture Overview in "What is gVisor?" as it makes more sense
in one place.
* Drop "user-space kernel" and use "application kernel". The term "user-space
kernel" is confusing when some platform implementation do not run in
user-space (instead running in guest ring zero).
* Clear up the relationship between the Platform page in the user guide and the
Platform page in the architecture guide, and ensure they are cross-linked.
* Restore the call-to-action quick start link in the main page, and drop the
GitHub link (which also appears in the top-right).
* Improve image formatting by centering all doc and blog images, and move the
image captions to the alt text.
PiperOrigin-RevId: 311845158
Diffstat (limited to 'website/blog/2019-11-18-security-basics.md')
| -rw-r--r-- | website/blog/2019-11-18-security-basics.md | 28 |
1 files changed, 4 insertions, 24 deletions
diff --git a/website/blog/2019-11-18-security-basics.md b/website/blog/2019-11-18-security-basics.md index ed6d97ffe..fbdd511dd 100644 --- a/website/blog/2019-11-18-security-basics.md +++ b/website/blog/2019-11-18-security-basics.md @@ -56,15 +56,9 @@ in combination: redundant walls, scattered draw bridges, small bottle-neck entrances, moats, etc. A simplified version of the design is below -([more detailed version](/docs/architecture_guide/))[^2]: +([more detailed version](/docs/))[^2]: --------------------------------------------------------------------------------- - - - -Figure 1: Simplified design of gVisor. - --------------------------------------------------------------------------------- + In order to discuss design principles, the following components are important to know: @@ -134,13 +128,7 @@ minimum level of permission is required for it to perform its function. Specifically, the closer you are to the untrusted application, the less privilege you have. --------------------------------------------------------------------------------- - - - -Figure 2: runsc components and their privileges. - --------------------------------------------------------------------------------- + This is evident in how runsc (the drop in gVisor binary for Docker/Kubernetes) constructs the sandbox. The Sentry has the least privilege possible (it can't @@ -222,15 +210,7 @@ the host Linux syscalls. In other words, with gVisor, applications get the vast majority (and growing) functionality of Linux containers for only 68 possible syscalls to the Host OS. 350 syscalls to 68 is attack surface reduction. --------------------------------------------------------------------------------- - - - -Figure 3: Reduction of Attack Surface of the Syscall Table. Note that the -Senty's Syscall Emulation Layer keeps the Containerized Process from ever -calling the Host OS. - --------------------------------------------------------------------------------- + ## Secure-by-default |