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Full Discussion: rlogin/rsh incoming port
Top Forums Programming rlogin/rsh incoming port Post 54502 by andryk on Tuesday 17th of August 2004 04:13:10 AM
Old 08-17-2004
rlogin/rsh incoming port

Hi all,

In need to know why my sample code below that connect to a rlogind (513) fails, but original unix rlogin does not ? (.rhosts is verified to be correct)

I heard rlogin/rsh bind to a reserved port before connecting to the rlogin server. what are they ???

Code:
   s = socket(AF_INET, SOCK_STREAM, 0);
   sck.sin_family      = AF_INET;
   sck.sin_port        = htons(513);
   sck.sin_addr.s_addr = inet_addr("192.168.15.40");

   if (connect(s, (struct sockaddr *)&sck,sizeof(sck)) <0) {
      printf("connect() error\n"); return;
   }
   printf("Connected %d\n",s);
   write(s,"",1);
   write(s,"root",5);
   write(s,"root",5);
   write(s,"linux/38400",12);

   read(s,buf,sizeof(buf));
   printf("%s\n",buf);

Any help would be appreciated Smilie
 

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pam_rhosts_auth(5)                                      Standards, Environments, and Macros                                     pam_rhosts_auth(5)

NAME
pam_rhosts_auth - authentication management PAM module using ruserok() SYNOPSIS
/usr/lib/security/pam_rhosts_auth.so.1 DESCRIPTION
The rhosts PAM module, /usr/lib/security/pam_rhosts_auth.so.1, authenticates a user via the rlogin authentication protocol. Only pam_sm_authenticate() is implemented within this module. pam_sm_authenticate() uses the ruserok(3SOCKET) library function to authenticate the rlogin or rsh user. pam_sm_setcred() is a null function. /usr/lib/security/pam_rhosts_auth.so.1 is designed to be stacked on top of the /usr/lib/security/pam_unix.so.1 module for both the rlogin and rsh services. This module is normally configured as sufficient so that subsequent authentication is performed only on failure of pam_sm_authenticate(). The following option may be passed in to this service module: debug syslog(3C) debugging information at LOG_DEBUG level. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |MT Level |MT-Safe with exceptions | +-----------------------------+-----------------------------+ SEE ALSO
pam(3PAM), pam_authenticate(3PAM), ruserok(3SOCKET), syslog(3C), libpam(3LIB), pam.conf(4), attributes(5) NOTES
The interfaces in libpam() are MT-Safe only if each thread within the multi-threaded application uses its own PAM handle. SunOS 5.10 28 Oct 1996 pam_rhosts_auth(5)
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