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After upgrading from RedHat 6.0 to the latest rawhide as of 29/May/1999, telnet and ftp do not work as a normal user. When doing a telnet or an ftp over any interface as root it works well, but when doing it as a normal user I get an "unknown service" error. Example session: [nito@fulgore:~]$ telnet kitana telnet: tcp/telnet: unknown service [nito@fulgore:~]$ ftp kitana ftp: ftp/tcp: unknown service [nito@fulgore:~]$ su - Password: [root@fulgore:~]# telnet kitana Trying 192.168.1.2... Connected to kitana.softengine.net. Escape character is '^]'. Red Hat Linux release 6.0 (Hedwig) Kernel 2.2.5-15 on an i586 login: login: Connection closed by foreign host. [root@fulgore:~]# ftp kitana Connected to kitana.softengine.net. 220 kitana.softengine.net FTP server (Version wu-2.4.2-VR17(1) Mon Apr 19 09:21:53 EDT 1999) ready. Name (kitana:root): 331 Password required for #~ ~0ho@@$@~. Password: 530 Login incorrect. Login failed. ftp> quit 221 Goodbye. [root@fulgore:~]# Other network apps like the remote commands (rsh, etc.), browsers work fine. Also the servers (ftpd, telnetd) work fine. I suppose that by the symptoms it seems like a permissions problem, but so far I haven't found what it is.
Check /etc/nsswitch.conf to determibe where you get your services from. I do services: nisplus [NOTFOUND=return] files Put files at the beginning if necessary. Then check permissions on /etc/services.
Thanks. The problem was the permissions on the /etc/services file they were 600 when they were supposed to be 644. Again, this happened after upgrading from 6.0 to latest rawhide as of May 30. I did not changed the permissions on the file, neither installed anything other than rawhide that could have changed them, so I guess one of the packages in rawhide is setting incorrect permissions on the file.
This problem appears to be resolved.