University IT
ITS/AS/ACS Linux Systems Template Rules
Attention Application Owners & Rule Delegates
The following set of firewall policies, referred to as "Template Rules", are provided for administrators of Linux based servers that require a specific set of source hosts/nets and services allowed for administration.
When applying these Template rules, please consider any additional necessary "custom" policies to guarantee the inbound or outbound connectivity that servers will require. Those "custom" policy requests can be made via the Firewall Rule Request form.
Please contact the Firewall Team (firewall-team@lists.stanford.edu) with any questions.
Firewall Template Rules
| From | To | Ports | Description |
|---|---|---|---|
| tl_afs_nets | tl_linux_hosts | tl_afs3-callback | AFS3 Callback (udp:7000-7010) |
| tl_bastion_hosts | tl_linux_hosts | tl_bastion_access | ssh (tcp:22) remctl (tcp:4373) IPMI (udp:623) |
| tl_nagios_servers | tl_linux_hosts | tl_nagios | Nagios monitoring (tcp:4373) NTP (udp:123) |
| tl_monitor_servers | tl_linux_hosts | tl_monitor | monitor (tcp:4949) |
| From | To | Ports | Description |
|---|---|---|---|
| tl_linux_hosts | Untrust | tl_http(s) | http(s) (tcp:80 tcp:443) |
| tl_linux_hosts | Untrust | tl_bind | bind (tcp:53 udp:53) |
| Group | Members |
|---|---|
| tl_bastion_hosts | luckdragon smtp-dr casper castoff |
| tl_afs_nets | 171.64.7.0/24 171.64.17.0/24 171.67.16.0/22 171.67.20.0/24 171.67.22.0/24 |
| tl_nagios_servers | nagios01 nagios02 providence |
| tl_monitor_servers | memory2 |
Roles
Template Owner
Responsible for determining, maintaining and modifying the template rules and membership of the different server groups. The application owner is notified regarding any changes to the template.
Current Template Owners
- Roshni Mudgal (representing AS)
- David Hoffman (representing ISO)
- Noah Abramson (representing ITS)
System Administrators
Request rule approval from the application owner.
ISO Security
The ISO group will audit the rules and make recommendations as needed or upon request from either the System Administrators or the Application Owners. In addition, any changes to this template must be reviewed by ISO prior to implementation.
