Hey this was happened in past with me also... You can use your installation CDs to tackle with this problem. You have to enter into resque mode and copy pam.d files from that mode For resque mode refer following website <a href="https://listman.redhat.com/docs/manuals/linux/RHL-7.3-Manual/custom-guide/s1-rescuemode-boot.html">https://listman.redhat.com/docs/manuals/linux/RHL-7.3-Manual/custom-guide/s1-rescuemode-boot.html</a> OR easiest way is copy/create pam configure files from other same system and install PAM <a href="http://0.99.9.0">0.99.9.0</a>, but prefer by solving this problem using resque mode After that take a backup of your /etc/pam.d and install pam by disabling selinux option. Make all possible configuration checks <. ./configure --help> <div class="gmail_quote">On Nov 21, 2007 11:39 AM, QiuChu <<a href="mailto:qiu.chu@hotmail.com">qiu.chu@hotmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div><div style="text-align: left;"> I have install PAM <a href="http://0.99.9.0" target="_blank">0.99.9.0</a> on my system, and I have run these commands on the directory unzip from install package. shell>configure --enable-static-libpam shell>make install A terrible error happened, the message is: Making all in pam_selinux make[3]: Entering directory `/root/Linux-PAM-0.99.9.0/modules/pam_selinux' /bin/sh ../../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I../.. -I../../libpam/include -I../../libpamc/include -I../../libpam_misc/include -g -O2 -W -Wall -Wbad-function-cast -Wcast-align -Wcast-qual -Wmissing-declarations -Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wstrict-prototypes -Wwrite-strings -Winline -Wshadow -MT pam_selinux.lo -MD -MP -MF deps/pam_selinux.Tpo -c -o pam_selinux.lo pam_selinux.c gcc -DHAVE_CONFIG_H -I. -I../.. -I../../libpam/include -I../../libpamc/include -I../../libpam_misc/include -g -O2 -W -Wall -Wbad-function-cast -Wcast-align -Wcast-qual -Wmissing-declarations -Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wstrict-prototypes -Wwrite-strings -Winline -Wshadow -MT pam_selinux.lo -MD -MP -MF deps/pam_selinux.Tpo -c pam_selinux.c -fPIC -DPIC -o .libs/pam_selinux.o pam_selinux.c: In function `mls_range_allowed': pam_selinux.c:225: error: `CONTEXT__CONTAINS' undeclared (first use in this function) pam_selinux.c:225: error: (Each undeclared identifier is reported only once pam_selinux.c:225: error: for each function it appears in.) pam_selinux.c:232: error: `SECCLASS_CONTEXT' undeclared (first use in this function) pam_selinux.c: In function `pam_sm_open_session': pam_selinux.c:497: warning: implicit declaration of function `getseuserbyname' pam_selinux.c:498: warning: implicit declaration of function `get_ordered_context_list_with_level' make[3]: *** [pam_selinux.lo] Error 1 make[3]: Leaving directory `/root/Linux-PAM-0.99.9.0/modules/pam_selinux' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/root/Linux-PAM-0.99.9.0/modules' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/root/Linux-PAM-0.99.9.0' make: *** [all] Error 2 I found that some files /lib64/security is updated. And no file in /etc/pam.d and /etc Now I cannot login my system on the monitor or SSH client. Only by what I can access the system is the SSH windows which is opened before I install the PAM <a href="http://0.99.9.0" target="_blank">0.99.9.0</a> I thought the PAM is wrong. Why this happened? And How can I undo it. Thank you very much! Chu Qiu </div> <hr>用 Windows Live Spaces 展示个性自我，与好友分享生活！ <a href="http://spaces.live.com/?page=HP" target="_blank">了解更多信息！</a></div> _______________________________________________ Pam-list mailing list <a href="mailto:Pam-list@redhat.com">Pam-list@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/pam-list" target="_blank">https://www.redhat.com/mailman/listinfo/pam-list </a> </blockquote></div> -- Rakesh P. Zingade +919420357790