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+# Insecure Protocols and Services
+
+## Insecure Protocols
+The following are also some of the services that are considered insecure:
+
+- Rlogin: https://linux.die.net/man/1/rlogin
+- Rsh: https://linux.die.net/man/1/rsh
+- Finger: https://linux.die.net/man/1/finger
+
+
+## Insecure Services
+The following services should be carefully implemented and not exposed to untrusted networks:
+
+- Authd (or Identd): https://linux.die.net/man/3/ident
+- Netdump: https://linux.die.net/man/8/netdump
+- Netdump-server: https://linux.die.net/man/8/netdump-server
+- Nfs: https://linux.die.net/man/5/nfs
+- Rwhod: https://linux.die.net/man/8/rwhod
+- Sendmail: https://linux.die.net/man/8/sendmail.sendmail
+- Samba: https://linux.die.net/man/7/samba
+- Yppasswdd: https://linux.die.net/man/8/yppasswdd
+- Ypserv: https://linux.die.net/man/8/ypserv
+- Ypxfrd: https://linux.die.net/man/8/ypxfrd