- Port 23 (Telnet)
- Port 68 (DHCP)
- Ports 135 to 139 and 445 (NetBIOS)
- Port 389 (LDAP)
- Port 497 (Backup software)
- Port 1025 (MS Scheduled Task Endpoint)
- Port 1433 and 1434 (SQL Server)
Yes, we block the inbound traffic network wide on the following ports: