Linkwall not blocking URLS by IP address

Hi
We have noticed that linkwall does not block sites if you use the IP address rather than the DNS name. For example in the linkwall.lst file Poker.com - The home of online poker games, rules & tournaments will block that site but not the IP address of the site which can be obtained by dns lookup.
Rules placed in the BM acl list in nwadmin do block the corresponding IP address.
Does anybody know if this is working as designed - it doesn't really provide much protection this way.
Many thanks
Kerry

HI Gonzalo
Thanks - I have already tried the proxy.cfg with the DonotSendIPToACL set to 1 and 0 (restarted with -cc etc) and it made no difference. My understanding was that the switch only affected sites that were multihomed.
Never mind - it certainly doesn't do the lookup with the third party tool so we looking into other options.
Thanks for the input though
Kerry
Originally Posted by mysterious
KPR wrote:
> Hi
>
> We have noticed that linkwall does not block sites if you use the IP
> address rather than the DNS name. For example in the linkwall.lst file
> 'Poker.com - The home of online poker games, rules & tournaments'
> (Poker.com - The home of online poker games, rules & tournaments) will block that site but not the IP address of
> the site which can be obtained by dns lookup.
>
> Rules placed in the BM acl list in nwadmin do block the corresponding
> IP address.
Probably you're using an empty proxy.cfg file.
> Does anybody know if this is working as designed - it doesn't really
> provide much protection this way.
About linkwall, Marcus already answered you.
About bm, this behavior was changed to stop blocking multihoming
servers. Multihoming servers are servers that with one ip address, they
host various web servers. For example, a server with ip address 10.1.1.1
is hosting Poker.com - The home of online poker games, rules & tournaments, www.penguins,com and www.dolphins.com
So you block Poker.com - The home of online poker games, rules & tournaments, bm resolves this domain to 10.1.1.1 so this
ip address is blocked as well. Now you try to access penguins.com
and you're block. but you did not block this site. So to avoid that, a
new switch was introduced for bm and the switch is placed on the
proxy.cfg file:
DonotSendIPToACL=1
with this switch, only domain name will be blocked. Without it or set to
0, both, domain name and ip will be blocked, so you can run into the
issue with multihoming servers.
Gonzalo
> Many thanks
>
> Kerry
>
>

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