To deny connections to a server

In ProjectWise Administrator, under the Servers icon, right-click your server and select Properties.
In the Server Properties dialog, select the Security tab.
Set Select security type to Connections.
In the Deny field, type the IP address or host name of the computer to deny (for multiple computers you can enter an IP address range), then click Add. Repeat this step to add additional computers to the Deny list.

Note: You can use an asterisk (*) as a wild card option in your IP address. For example, Deny 11.22.33.*.

You can also use CIDR (Classless Inter-Domain Routing) notation to specify a range of addresses. For example, use 10.19.0.0/16 to match any addresses beginning with 10.19.
Click OK.