VIP published to every source on every service
At a glance
Base severity
Area
Platform
Evidence level
Benchmark reference
Reads the export, not the device
ConfigProof reads a configuration export. This control is evaluated against the objects in that file, and it reports what the file says. It does not connect to the device and sees no traffic, so a finding here describes the configuration, not what the firewall is doing right now.
Why it matters
A VIP maps a public address to an internal host. Published from every source on every service, every port the host listens on is open to the internet side of the policy.
How to fix it
Web interface
The steps below are written for the web interface. A finding raised on your own export carries the same steps with your object names filled in.
- Restrict the policy's source to the networks that need the host and its service to the ports the host serves.
Command line
FortiOS CLI
config firewall policyedit <policy-id>set srcaddr <source-address>set service <services>nextend
An example. Values in angle brackets are yours to supply; a finding on your own export fills in the names it read. FortiOS saves a change when you type next or end, with no separate commit. Read every line first.
Read it back
show firewall policy <policy-id>Values to fill in3
- <policy-id>
- The policy id to change
- <source-address>
- The address objects allowed as the source
- <services>
- The services this policy should allow
Before you type it3
- Written from the FortiOS CLI Reference, not yet run on a device. Read each line before typing it.
- On a device with VDOMs, type these inside the VDOM (config vdom, edit the VDOM) or inside config global for a global setting.
- Narrowing this changes who reaches what. Confirm the new set covers the traffic the application needs.
How to confirm the fix
- List the services the host is meant to publish and confirm each still matches.
Limits
- No limitation is recorded for this control beyond the one that applies to all of them: it reads a configuration export.
Compliance references
No benchmark recommendation is mapped to this control in this version.
More in NAT
See it on your own firewall
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