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I am using KWF 5.1.9 to aggregate and load balance my ISP connectivity by providing a common gateway for all servers and PCs. I then control how connections route based on protocol.

Everything works fine till about 20 hours after boot up, then all incoming connections seem to die. I have tried restarting the KWF service but only a reboot helps.

Would swapping from W2K Pro to XP Pro help? KWF is a great product and I really want to use it for my company. Any suggestions would be greatly appreciated.

Thanks and regards

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1. A 384K Leased Line (StaticIP) with 25 IP addresses loaded
2. A 512K ADSL Line (Static IP) with 12 IP addresses loaded
3. A 1500K Cable Modem Line (Dynamic IP) with 1 IP address loaded

Only TCP/IP is bound to all NICs. MS Network Client and File & Print sharing are unchecked.

Services behind KWF:-
1. FTP
3. DNS (Primary & Secondary zones)
5. POP3

P4 2.0Ghz
Mirrored 8.4GB HDD
1 x D-Link 538TX 10/100 NIC for LAN conenctions.
1 x D-Link 570TX Quad 10/100 NIC for WAN connections.
1 x Promise FastTrak66 IDE RAID 1 Card

1. Windows 2000 SP4 Pro with all the latest patches.
2. KWF 5.1.9
3. DynDNS Updater for the Dynamic IP Updater for the cable connection.
Jeff Wadlow (Kerio)

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Are there any messages in the error log in C:\Program Files\Kerio\WinRoute Firewall\Logs??

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Thanks for the quick reply.

No error messages but I just managed to figure it out.

When my routers reboot at 04.30am, the NICs which are connected directly to the routers disconnect and routing gets confused even when the routers come up.

I have resolved this by using a registry key to disable TCP/IP DHCP Media Sensing. (This will work with static IPs as well.)

Use Registry Editor to view the following key in the registry:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\P arameters

Add the following registry value:
Value Name: DisableDHCPMediaSense
Data Type: REG_DWORD -Boolean
Value Data Range: 0, 1 (False, True) Default: 0 (False)

Description: This parameter controls DHCP Media Sense behavior. If you set this value data to 1, DHCP, and even non-DHCP, clients ignore Media Sense events from the interface. By default, Media Sense events trigger the DHCP client to take an action, such as attempting to obtain a lease (when a connect event occurs), or invalidating the interface and routes (when a disconnect event occurs).

More info at:- ebContent=1
Jeff Wadlow (Kerio)

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Thanks for the information and the link to Microsoft's KB.
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