What rules do I have to set up for svchost.exe?

Go to the Lavasoft Personal Firewall installation folder, open file preset.lst and add the following preset definitions:

[Generic Host Process]

VisibleState: 0

Exe:

Generic Host Process, svchost.exe

DefaultState: 1

RuleName: DHCP Service

Protocol: UDP

LocalPort: 68

RemotePort: 67

Direction: Inbound

AllowIt

DefaultState: 1

RuleName: DNS Service

Protocol: UDP

LocalPort: 53

AllowIt

DefaultState: 1

RuleName: DNS Service

Protocol: TCP

LocalPort: 53

AllowIt

DefaultState: 1

RuleName: HTTP connection

Protocol: TCP

RemotePort: 80

Direction: Outbound

AllowIt

DefaultState: 1

RuleName: HTTPS connection

Protocol: TCP

RemotePort: 443

Direction: Outbound

AllowIt

DefaultState: 1

RuleName: Time Synchronizer connection

Protocol: UDP

RemotePort: 123

AllowIt

DefaultState: 1

RuleName: "SSDP Discovery Service" and "UPnP device Host" services

Protocol: UDP

RemotePort: 1900

AllowIt

DefaultState: 1

RuleName: "SSDP Discovery Service" and "UPnP device Host" services

Protocol: UDP

LocalHost: 239.251.251.250

LocalPort: 1900

AllowIt

DefaultState: 1

RuleName: "SSDP Discovery Service" and "UPnP device Host" services

Protocol: TCP

RemotePort: 5000

AllowIt

DefaultState: 1

RuleName: Microsoft Remote Desktop TCP connection

Protocol: TCP

RemotePort: 3389

AllowIt

Save the file and restart Lavasoft Personal Firewall;

Switch the Firewall to the Rules Wizard mode;

As svchost requests any connection, and the Rules Wizard appears, click Create rules using preset and select Generic Host Process from the list. All required rules will be created automatically.