To allow private header information to be sent: Zone Alarm Pro See Screenshot below.
1. In Zone Alarm Pro, select Privacy.
2. Under Cookie Control, click Custom
3. In Custom Privacy Settings, uncheck the box that say Remove private header information.
4. Click OK.
Or, to allow private header information to be sent to www.haiguinet.com only:
1. In Zone Alarm Pro, select Privacy.
2. Select the Site Control tab.
3. Add the address of the haiguinet server to the list. An example address is: www.haiguinet.com
4. Right-click the entry in the Privacy Header Information column for the hotComm relay address you just added, and select Options.
5. Uncheck the box that say Remove private header information.
6. Click OK.
其它防火墙也有类似设定，只要保证www.haiguinet.com 的http referer header不被删掉或改掉就可以了；比如 Norton Personal Firewall里改个Browser Privacy的设置即可。
