Re: DLink DI-604 router firewall rule disables that config screen

From: Bruce Phillips (bwphillips_at_adelphia.net)
Date: 03/09/04 

Date: Tue, 9 Mar 2004 05:51:03 -0800

There's a D-Link forum at BroadbandReports.com you might want to check out.

http://www.broadbandreports.com/forum/dlink

Bruce

*Vanguard* wrote:
>> Didn't find a more appropriate newsgroup to post this. I've got a
>> DLink DI-604 NAT router. This is in a home environment. I'm not
>> responsible nor want to manage the PCs used by other family members.
>> I just want to manage my PC. As such, I wanted to isolate it on the
>> router from the other hosts connected to it so I wouldn't have to be
>> concerned about virus, trojans, or spyware installed on those other
>> PCs. I defined a rule in the router that isolates my host from any
>> other host connected to that router but the side effect was that now
>> I cannot edit or delete any of the firewall rules in the router
>> (without having to reset the router and lose all of the
>> configuration).
>>
>> The DLink router provides its own DHCP server used to assign the
>> hosts connected to it with dynamically assigned IP addresses. The
>> range its DHCP server can assign IP addresses is 192.168.0.x, where
>> x = 100 to 199. The DLink DI-604 (after updating to its most recent
>> firmware version) also allows assignment of static IP address
>> assignment to hosts connected to it by their MAC address. This
>> allows firewall rules to be defined within the router for specific
>> hosts without worrying that later they may get a different IP
>> address. Right now, mine is the only host assigned a static IP
>> address of 192.168.0.100. So the IP addresses currently used are:
>>
>> router = 192.168.0.1 (fixed)
>> my PC = 192.168.0.100 (fixed)
>> other PCs = 192.168.0.101-199 (dynamic)
>>
>> Normally I should be able to click on the edit icon to select it and
>> display its settings in the edit fields where I can change them, or I
>> can click on the delete icon to delete that rule, or click on the
>> up/down arrows to change its position in the rules list. However,
>> after defining the following firewall rule in the router, the page
>> for the firewall rules becomes unusable and I cannot edit, delete,
>> or re-sort the rules.
>>
>> Mode = Enabled
>> Name = "Isolate Lee's host" (my name is Lee, not the hostname)
>> Source: LAN, IPaddr = 192.168.0.101 to 192.168.0.199, all ports
>> Target: LAN, IPaddr = 192.168.0.100, TCP & UDP, all ports
>> Access: Deny
>> When active: Always
>>
>> My static IP address is x.x.x.100. All other hosts will be
>> x.x.x.101 to x.x.x.199 which covers the rest of the range for the
>> router's DHCP server. The router itself is at x.x.x.1 so it is NOT
>> within the blocked IP address range. So this firewall rule should
>> prevent any host connected to the router (but not the router itself)
>> from communicating to my host. This is what I see occur on my
>> intranetwork. I can still open the browser to the router and
>> perform all other configurations. It's just the firewall rules
>> screen that locks up.
>>
>> So if I now or later want to add more rules, I have to record every
>> customized setting in the router, reset the router, make the
>> additional change plus restore all my other settings, and lastly
>> define this firewall rule to isolate my host on that router from
>> other hosts connected to that router. A real pain. I don't see
>> that what I am defining in a firewall rule should disable just the
>> firewall rules screen in the router. I can still modify the
>> settings in any other screen for the router. Maybe another set of
>> eyeballs might notice something stupid that I'm doing. Or maybe its
>> just some bug in the Dlink router (I'm still waiting for a response
>> from Dlink).

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