000035327 - Configuring RSA Authentication Agent 7.1 for PAM on SELinux

1. Install the RSA prerequisites:

• selinux-policy-devel.rpm
• noarchpolicycoreutils-devel.rpm

sudo yum install selinux-policy-devel*.noarch policycoreutils-devel*

2. Create the /opt/rsa directory.

mkdir /opt/rsa

3. Create the file /opt/rsa/sdopts.rec with the following content:

CLIENT_IP=<IP address of the server on which you are installing the PAM agent>

4. Ensure that the sdconf.rec file is owned by root:root and has the permissions of 600 (owner can read/write):

chown root:root /opt/rsa/sdconf.rec
chmod 600 /opt/rsa/sdconf.rec

5. Make a backup copy of /etc/ssh/sshd_config file

cp /etc/ssh/sshd_config /etc/ssh/sshd_config.old

6. Update the /etc/ssh/sshd_config file to include the following values:

UsePam yes
PasswordAuthentication no
UsePrivilegeSeparation no
ChallengeResponseAuthentication yes
PublicKeyAuthentication no

7. Untar the PAM-Agent tar ball in to any local directory.

tar -xvf <filename>.tar 

8. Execute the install_pam.sh shell script located in the PAM-Agent directory created from unpacking the tar ball.  Make sure to supply the correct path the sdconf.rec (/opt/rsa), otherwise you will use the default responses for all questions asked during the install.

/<filename>/install_pam.sh

9. Update the /etc/sd_pam.conf file such that the VAR_ACE variable points to the correct location of the sdconf.rec file located in /opt/rsa.
10. Update the /etc/pam.d/sshd file as follows:
    
    1. Comment out ALL lines containing "auth"
    2. Add the following line to the bottom of the file:

auth  required     pam_securid.so

10. Restart sshd.
11. Test authentication by executing /opt/pam/bin/64bit/acetest.
12. Test SSH authentication from a remote host.

Below is the output from the install_pam.sh from the point that the EULA is accepted:

Do you accept the License Terms and Conditions stated above? (Accept/Decline) [D]A
Enter Directory where sdconf.rec is located [/var/ace]/opt/rsa

Please enter the root path for the RSA Authentication Agent for PAM directory [/opt]
The RSA Authentication Agent for PAM 7.1 will be installed in the /opt directory.
pam/
pam/doc/
pam/doc/auth_agent_PAM_RHEL.pdf
pam/doc/auth_agent_PAM_SUSE.pdf
pam/bin/
pam/bin/64bit/
pam/bin/64bit/acestatus
pam/bin/64bit/acetest
pam/bin/64bit/ns_conv_util
pam/bin/32bit/
pam/bin/32bit/ns_conv_util
pam/bin/32bit/acestatus
pam/bin/32bit/acetest
pam/lib/
pam/lib/64bit/
pam/lib/64bit/pam_securid.so
pam/lib/32bit/
pam/lib/32bit/pam_securid.so
**********************************************************************
*         Adding label for pam_securid.so                            *
ValueError: File spec /lib64/security//pam_securid.so conflicts with equivalency rule '/lib64 /usr/lib'; Try adding '/usr/lib/security//pam_securid.so' instead
*         Adding label for /opt/rsa directory                        *
*         Creating rsapolicy.pp policy file                          *
Compiling targeted rsapolicy module
/usr/bin/checkmodule:  loading policy configuration from tmp/rsapolicy.tmp
/usr/bin/checkmodule:  Module name local is different than the output base filename rsapolicy
make: *** [tmp/rsapolicy.mod] Error 1
libsemanage.map_file: Unable to open rsapolicy.pp
(No such file or directory).
libsemanage.semanage_direct_install_file: Unable to read file rsapolicy.pp
(No such file or directory).
semodule:  Failed on textrel_shlib_t.pp!
**********************************************************************
Checking /etc/sd_pam.conf:
VAR_ACE does not exist - entry will be appended
RSATRACELEVEL does not exist - entry will be appended
RSATRACEDEST does not exist - entry will be appended
ENABLE_USERS_SUPPORT does not exist - entry will be appended
INCL_EXCL_USERS does not exist - entry will be appended
LIST_OF_USERS does not exist - entry will be appended
PAM_IGNORE_SUPPORT_FOR_USERS does not exist - entry will be appended
ENABLE_GROUP_SUPPORT does not exist - entry will be appended
INCL_EXCL_GROUPS does not exist - entry will be appended
LIST_OF_GROUPS does not exist - entry will be appended
PAM_IGNORE_SUPPORT does not exist - entry will be appended
AUTH_CHALLENGE_USERNAME_STR does not exist - entry will be appended
AUTH_CHALLENGE_RESERVE_REQUEST_STR does not exist - entry will be appended
AUTH_CHALLENGE_PASSCODE_STR does not exist - entry will be appended
AUTH_CHALLENGE_PASSWORD_STR does not exist - entry will be appended
BACKOFF_TIME_FOR_RSA_EXCLUDED_UNIX_USERS does not exist - entry will be appended