1 recon

PORT   STATE SERVICE VERSION
21/tcp open  ftp     vsftpd 3.0.3
22/tcp open  ssh     OpenSSH 7.9p1 Debian 10+deb10u2 (protocol 2.0)
| ssh-hostkey:
|   2048 10:62:1f:f5:22:de:29:d4:24:96:a7:66:c3:64:b7:10 (RSA)
|   256 c9:15:ff:cd:f3:97:ec:39:13:16:48:38:c5:58:d7:5f (ECDSA)
|_  256 90:7c:a3:44:73:b4:b4:4c:e3:9c:71:d1:87:ba:ca:7b (ED25519)
80/tcp open  http    Apache httpd 2.4.38 ((Debian))
|_http-server-header: Apache/2.4.38 (Debian)
|_http-title: Enter a title, displayed at the top of the window.
5437/tcp open  postgresql PostgreSQL DB 11.3 - 11.7
| ssl-cert: Subject: commonName=debian
| Subject Alternative Name: DNS:debian
| Not valid before: 2020-04-27T15:41:47
|_Not valid after:  2030-04-25T15:41:47
|_ssl-date: TLS randomness does not represent time

Service Info: OSs: Unix, Linux; CPE: cpe:/o:linux:linux_kernel