Manual Vulnerability Assessment TCP/21: FTP Anonymous FTP Enabled anonymous guest TCP/22: SSH nmap -p 22 --script ssh2-enum-algos <ip_address> SSH Weak Algorithms Supported SSH Server CBC Mode Ciphers Enabled ssh -oCiphers=<ciphers> <ip_address> SSH Weak MAC Algorithms Enabled ssh -oMACs=<algorithm> <ip_address> SSH Protocol v1 Supported ssh -1 <ip_address> -v Hardening on SSH Ciphers aes256-ctr,aes192-ctr,aes128-ctr MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-128@openssh.com TCP/23: Telnet Unencrypted Telnet Server telnet <ip_address> 23 TCP/25: SMTP SMTP Service Cleartext Login Permitted telnet <ip_address> 25 EHLO <ip_address> AUTH LOGIN Mailserver answer to VRFY and EXPN requests * nc <ip_address> 25 EXPN root VRFY root TCP/53: DNS DNS Server Cache Snooping Remote Information Disclosure