Red Hat Bugzilla – Bug 134796
cannot loging with rsh and telnet: 'system error'
Last modified: 2007-11-30 17:10:51 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; rv:1.7.3) Gecko/20041002 Firefox/0.10.1 Description of problem: Previously, telnet and rsh were working fine on my machine, and I could use either to connect to it. Now however, any attempt to rlogin to the machine results in the error message 'System error' followed by 'rlogin: connection closed.' SSH logins still work fine. telnet logins are even more unpleasant: [local@hydra local]$ telnet calliope Trying 10.100.1.215... Connected to calliope. Escape character is '^]'. Fedora Core release 2 (Tettnang) Kernel 2.6.8.1 on an i686 Login incorrect Login incorrect Login incorrect Login incorrect Connection closed by foreign host. I have NIS configured - however, I get the same problem using local users as well as NIS ones. I'll attach an strace of xinetd + children during a rlogin Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. set up .rhosts properly 2. login to another machine 3. attempt to login to the affected machine Actual Results: 'System error' message and then connection close Expected Results: A shell on the machine Additional info:
Created attachment 104833 [details] strace -f -s 256 -p [pid of xinetd]
I was seeing these failures as well. Seems to be caused by a missing "/etc/pam.d/remote" file. I copied "/etc/pam.d/rlogin" to "/etc/pam.d/remote" and my telnet/rlogin problems disappeared. This was deduced from the 'strace' output: 3839 open("/etc/pam.d/remote", O_RDONLY) = -1 ENOENT (No such file or directory) 3839 open("/etc/pam.d/other", O_RDONLY) = 3
Thanks! The workings of pam are a mystery to me... It seems that util-linux-2.12a-12 now includes a /etc/pam.d/remote file as well, so this bug has been fixed.