IBM Health Checker for z/OS MVRSHD RHOSTS DATA

z/OS® V2R3 Communications Server provides a new IBM® Health Checker for z/OS application health check to help determine whether your MVRSHD server is active and whether RSH clients are using RHOSTS.DATA datasets for authentication. The MVRSHD server supports the RSH and REXEC protocols which transfer user ID and password information in the clear. There is also the potential of weak authentication for RSH clients using RHOSTS.DATA datasets. This authentication method allows remote command execution without requiring the RSH client to supply a password.

Dependency: You must start the IBM Health Checker for z/OS to use the new application health check.

Using the IBM Health Checker for z/OS MVRSHD RHOSTS DATA

To use the IBM Health Checker for z/OS MVRSHD RHOSTS DATA, perform the appropriate tasks in Table 1.

Table 1. IBM Health Checker for z/OS MVRSHD RHOSTS DATA
Task	Reference
To use the IBM Health Checker for z/OS application check support, take the following steps: Configure and start the IBM Health Checker for z/OS. Review the CSAPP_MVRSHD_RHOSTS_DATA health check output.	See the following topics in IBM Health Checker for z/OS: User's Guide: Setting up IBM Health Checker for z/OS Working with check output Managing checks

To find all related topics about IBM Health Checker for z/OS MVRSHD RHOSTS DATA, see Table 2.

Table 2. All related topics about IBM Health Checker for z/OS MVRSHD RHOSTS DATA
Book name	Topics
z/OS Communications Server: IP Configuration Guide	Step 3: Permit remote users to access MVS™ resources (optional)
z/OS Communications Server: IP Configuration Reference	Remote execution server parameters
z/OS Communications Server: IP Diagnosis Guide	IBM Health Checker for z/OS
z/OS Communications Server: IP Messages Volume 1 (EZA)	EZA4443I
z/OS Communications Server: SNA Messages	ISTH029I ISTH030E
IBM Health Checker for z/OS: User's Guide	CSAPP_MVRSHD_RHOSTS_DATA