Projects

Kernel Security Projects

Access Control

• Linux Security Modules (LSM), the API for access control frameworks
• AppArmor, a pathname-based access control system
• Security Enhanced Linux (SELinux), a flexible and fine-grained MAC framework
• Smack, the Simplified Mandatory Access Control Kernel for Linux
• TOMOYO, another pathname-based access control system (LiveCD available)
• grsecurity, extensive security enhancement patch for the Linux kernel (RBAC, chroot hardening, auditing, stack/heap protection randomization and more...)
• Rule Set Based Access Control (RSBAC), Linux kernel patch implementing a security framework
• FBAC-LSM aims to provide easy to configure (functionality-based) application restrictions
• Yama adds restrictions to ptrace, providing a programmatic way to declare relationships between processes

Integrity

This is a rapidly developing area, see the following LWN article for an overview:

• System integrity in Linux

Privileges

• POSIX File Capabilities
  • Filesystem capabilities in Fedora 10 LWN article

Networking

There are several separately maintained projects relating to network security, including:

• Netfilter packet filtering
• Labeled Networking, including NetLabel, CIPSO, Labeled IPsec and SECMARK, see Paul Moore's blog
• NuFW authenticating firewall based on Netfilter

Storage

• Labeled NFS, a project to add MAC labeling support to the NFSv4 protocol
• dm-verity, a device mapper target for efficient, integrity-assured block devices

Cryptography

The cryptographic subsystem is maintained separately by Herbert Xu, refer to the mailing list.

Working Group

• Linux Security Workgroup