To build the "in.identd" daemon, do the following steps: 1. Type "make" and see if your machine is among one of those listed. If so, goto step 5. 2. Copy the entry for "other" in the top-level Makefile into a new one and edit it for your system. 3. If your machine/OS has the "KVM" routines (you can find out by typing "man kvm_open"), then add "-lkvm" (or whatever it's called on your system) to your newly created entry. 4. Edit the file "paths.h" to contain valid definitions for your system. 5. Type "make ", where is one from the list displayed when you type "make" without arguments. Then watch it build nicely (hopefully). 6. As "root", type "make install". This will copy the executable daemon "in.identd" into the destination directory as specified in the Makefile (normally /usr/local/sbin) and the man page into the specified man directory (normally /usr/local/man/man8). Please make sure that it is executable for the user you specify below in step 8! Otherwise it will fail for obvious reasons. 7. Edit /etc/services to contain a line "ident 113/tcp auth tap". If your system is running SunOS, or some other system with NIS (or YP) then cd to your YP directory and type "make". (On SunOS 4.*: "cd /var/yp; make"). 8. Edit the file /etc/inetd.conf to contain a line (replace "sys" with a user with enough rights to READ the kernel memory. Under SunOS 4.*, user "sys" is a member of the "kmem" group and is a good choice. If you have no "kmem" or "sys" user, then I suggest you create one and assign read rights for the group "kmem" to the /vmunix and /dev/kmem and /dev/mem "files" - you might also have to modify the group id of other programs that read the kernel, like "netstat", "ps" and more): ident stream tcp nowait sys /usr/etc/in.identd in.identd If you're running A/UX 2.0*, inetd reads from /etc/servers. This contains an archaic(?) form of the above: ident tcp /usr/etc/in.identd 9. Restart the "inetd" daemon. (Can normally be done with a "SIGHUP" signal). 10. Test the daemon by TELNET:ing to "130.236.254.1" port 114 and verify that the information displayed is correct. (It should give your user name, "UNIX" as operating system and no character set). The program on port 114 will connect to your newly installed daemon and try to retrieve the identity of you. Another way to test the daemon is by TELNET:ing to "localhost" port 113 and then escape to the command level temporarily (normally you can do this by keying "Ctrl-] z". Then type "netstat -n | egrep 113" and remember the other port number that you will see. Now return to your TELNET session and enter "4711 , 113", where you replace 4711 with the number you got from "netstat". If things work out ok you should see a response like: 4711 , 113 : USERID : UNIX : foobar Where "foobar" should be your user name. If it doesn't work then please send me a bug report at . 11. Else all is done and your server should be ready for real world usage.