Web Hosting Talk : Web Hosting Main Forums : Running a Web Hosting Business : 80.160.178.0 0.0.0.255 blocked

[Kiamori]

Had to block this class c today, I saw the ip's from that class c all over the security logs and I'm tired of trying to contact netowk admins that play stupid.

[DoMeric]

I hear you there. I've noticed an upwards trend in dictionary attacks lately, so I wrote a script where I can attach a portion of a log file, specify the email address, the type of attack and send it off to the registered abuse email in just a click. It has sped up my process of reporting quite a bit.

Not that it matters, most ISP's seem to send them to /dev/null.

[FHDave]

By Class C you mean a /24 right? So you are trying to block 80.160.178.0/24 ?

0.0.0.255, unfortunately, is not a class C's netmask. Aren't you blocking a lot more than just a class C with that netmask?

Good luck.

[Kiamori]

Originally posted by FHDave
By Class C you mean a /24 right? So you are trying to block 80.160.178.0/24 ?

0.0.0.255, unfortunately, is not a class C's netmask. Aren't you blocking a lot more than just a class C with that netmask?

Good luck.

It's already blocked, via an access-list in Cisco ios, you would do this in conf mode by typing: access-list 101 deny ip x.x.x.x y.y.y.y any

Where x.x.x.x = the ip to be blocked & y.y.y.y = the block

Where #.#.#.0 0.0.0.255 would be a class c and #.#.0.0 0.0.255.255 would be a class b

If only the isp's would block the unnecessary outgoing traffic for me =)

[Gavin Miller]

the 0.0.0.255 is a wildcard mask.... It instructs the Cisco IOS only to check the last octet of that address.