rlogin
- Opens ports between 512-514
| Service | Port | Protocol |
| rcp | 514 | TCP |
| rexec | 512 | TCP |
| rlogin | 513 | TCP |
| rsh | 514 | TCP |
| rstat | UDP | |
| ruptime | 513 | UDP |
| rwho | 513 |
Please note
- rlogin doesn't return any message when connection is successful
- rlogin and rsh use
/etc/hosts.equivand$HOME/.rhosts - rlogin uses
rlogind; rsh usesrshdas a daemon
hosts.equiv and .rhosts format
host1
host2 user_v
-host3
+@group1 -user_c
-@group2The traffic transmitted is unencrypted. The login process is without a password. This is blocked on modern systems
The traffic can be intercepted and spoofed.