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Ports used by Lansweeper

Last updated on April 03 2016

Below is an overview of the ports used by Lansweeper for scanning client machines and for internal communication between Lansweeper components.

  • Lansweeper service and web console to SQL Server
    Port: 1433/TCP
    Additional ports may need to be open as well. More info on allowing SQL Server traffic through a firewall can be found in this Microsoft knowledge base article.
  • Lansweeper service to Active Directory domain controllers
    Port: 389/TCP (LDAP)
  • Lansweeper service to scanned Windows computers
    Port: 135/TCP (DCOM to establish the initial WMI session with the computer)
    Random ports in the 1025-5000 or 49152-65535 range (to send the WMI data)
    Lansweeper pulls Windows computer data from WMI (Windows Management Instrumentation), a management framework built into Windows operating systems. By default, Windows sends WMI data over random ports, as explained in this Microsoft knowledge base article. You need to either:
    • Configure your firewalls in such a way that *all* WMI traffic (over random ports) is allowed. Windows Firewall includes a remote administration exception that you can enable to allow WMI traffic, as explained in this knowledge base article. For third-party firewalls, you'll need to consult your firewall documentation.
    Configure a fixed WMI port and allow traffic through that port. Setting up a fixed port is supported by Windows Vista and more recent operating systems.
    • If you are unable to allow WMI traffic through your firewalls, scan your computers locally with the LsPush scanning agent instead, which does not require firewall reconfiguration.
  • Lansweeper service to scanned Linux, Unix and Mac computers
    Port: 22/TCP (SSH) or a custom SSH port of your choice
  • Lansweeper service to scanned VMware servers
    Port: 443/TCP (HTTPS)
  • Lansweeper service to scanned network devices
    ICMP Ping
    Port: 21 (FTP)
    Port: 22 (SSH) or a custom SSH port of your choice
    Port: 23 (Telnet)
    Port: 25 (SMTP)
    Port: 80 (HTTP)
    Port: 135 (EPMAP)
    Port: 139 (NetBIOS Session Service)
    Port: 161 (SNMP)
    Port: 443 (HTTPS)
    Port: 445 (SMB)
    Port: 5060 (SIP) or a custom SIP port of your choice
    Port: 9100 (JetDirect)
  • Scanned Windows computers to Lansweeper service, if LsClient or LsPush is used for scanning
    Port: 9524/TCP or a custom port of your choice
    This port must be open in the firewall of the Lansweeper scanning server, i.e. the server hosting the Lansweeper Server service.