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Disable Port Scanning

zinger3031
Engaged Sweeper

Is it possible to disable certain port scans within LanSweeper?  Like for an example, in our environment we don't need LanSweeper scanning port 23 on our assets. 

ICMP Ping
Port: 21/TCP (FTP)
Port: 22/TCP (SSH) or a custom SSH port of your choice
Port: 23/TCP (Telnet)
Port: 25/TCP (SMTP)
Port: 80/TCP (HTTP)
Port: 135/TCP (EPMAP)
Port: 137/UDP (NetBIOS Name Service)
Port: 139/TCP (NetBIOS Session Service)
Port: 161 (SNMP)
Port: 443/TCP (HTTPS)
Port: 445/TCP (SMB)
Port: 1400/TCP (Sonos devices HTTP)
Port: 1900/TCP (SSDP, UPnP)
Port: 1900/UDP (SSDP, UPnP)
Port: 5060 (SIP) or a custom SIP port of your choice
Port: 5353/TCP (mDNS, DNS-SD)
Port: 5353/UDP (mDNS, Bonjour, DNS-SD)
Port: 5986/TCP (WinRM HTTPS for Windows cluster log scanning and Hyper-V log scanning)
Port: 8008/TCP (Chromecast)
Port: 8080/TCP (HTTP)
Port: 8443/TCP (HTTPS)
Port: 9100/TCP (JetDirect)
Port: 16992/TCP (Intel vPro HTTP)
Port: 16993/TCP (Intel vPro HTTPS)
Port: 62078/TCP (iTunes sync port for iOS device identification)
3 REPLIES 3

zinger3031
Engaged Sweeper

If we block certain ports on the firewall from being scanned, will that cause the scan to fail???

Obi_1_Cinobi
Lansweeper Tech Support
Lansweeper Tech Support

Hello there!

As Lansweeper uses these ports to determine the asset type, blocking ports could indeed lead to behavior where Lansweeper cannot correctly identify the asset type and will not be able to collect more information on the asset in question.

Obi_1_Cinobi
Lansweeper Tech Support
Lansweeper Tech Support

Hello there!

Unfortunately, this cannot be switched off as it is an essential part of our scanning method. When Lansweeper scans an asset, it will test certain ports to determine the asset type.

You can find an overview of the ports Lansweeper uses in the KB article linked below. As mentioned in the guide, Lansweeper uses different ports for different asset types.

https://www.lansweeper.com/knowledgebase/used-tcp-ports/