# Cis Tomcat101 10.11

> Force SSL for all applications (Automated)

- Skill: `cyberstrikeus/cis-tomcat101-10-11` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-tomcat101-10-11`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-tomcat101-10-11/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cis-tomcat101-10-11

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# 10.11 Force SSL for all applications (Automated)

## Description

Use the `transport-guarantee` attribute to ensure SSL protection when accessing all applications. This can be overridden on a per application basis in the application configuration.

## Rationale

By default, when accessing applications SSL will be enforced to protect information sent over the network. By using the `transport-guarantee` attribute within `web.xml`, SSL is enforced.

Note: This requires SSL to be configured.

## Impact

If the data protection level is set to `INTEGRAL` or `CONFIDENTIAL`, and the client is not already using SSL, then the client is redirected to the same URI, but using port 443 or the port defined for the `redirectPort` attribute in the `<Connector>` element in `server.xml`.

## Audit Procedure

Ensure `$CATALINA_HOME/conf/web.xml` has the `transport-guarantee` attribute set to `CONFIDENTIAL`.

```
# grep transport-guarantee $CATALINA_HOME/conf/web.xml
```

## Remediation

Set `transport-guarantee` to `CONFIDENTIAL` in `$CATALINA_HOME/conf/web.xml`:

```xml
<user-data-constraint>
  <transport-guarantee>CONFIDENTIAL</transport-guarantee>
</user-data-constraint>
```

## Default Value

By default this configuration is not present.

## References

1. https://www.owasp.org/index.php/Securing_tomcat

## CIS Controls

| Controls Version | Control                                                                                                                                                                           | IG 1 | IG 2 | IG 3 |
| ---------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---- | ---- | ---- |
| v8               | 3.10 Encrypt Sensitive Data in Transit<br>Encrypt sensitive data in transit. Example implementations can include: Transport Layer Security (TLS) and Open Secure Shell (OpenSSH). |      | ●    | ●    |
| v7               | 14.4 Encrypt All Sensitive Information in Transit<br>Encrypt all sensitive information in transit.                                                                                |      | ●    | ●    |

## Profile

Level 2