how to Block a site in a Firewall or Router by Protocol wise & host wise.
I would like to know the blocking methode In a Firewall or a Router.
whether i will be done by Protocol wise, ho ?
or it will done through Host wise, How ?
Can some one help
If you have a router that is capable of blocking individual addresses (your router's manual should tell you that), then, sure... my routers do not have that capability, however, so I do it a different way.
If you look at your logs, possibly /var/log/messages, you may see entries like these:
There's another way too: use iptables:
/etc/hosts.deny (see man 5 hosts_access) is a relatively simple, effective way of keeping the bad actors out of your system. iptables, too, is relatively simple and effective. If you install DenyHosts, you can semi-automagically take care of much of the problem without having to actually do anything except review your logs periodically (which you should be doing in any case).
Hope this helps some.
In addition to blocking hosts at your router you can also use Open DNS to block some issues with Confliker as well as filtering web access to some extent.
I swear by Open DNS. Here are the IP addresses for the Open DNS server
You can also do stats on your lookups too.
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