cyber-security-resources/cheat_sheets/insecure_protocols.md

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# Insecure Protocols and Services
## Insecure Protocols
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The following are also some of the protocols that are considered insecure:
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- 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