Hi,
On Mon, 08 Nov 2010, Kevin Brennan wrote:
> It's easy to run up a 5K bill over a weekend (I have seen it happen).
It's a good idea to raise this. I've seen similar scanning quite a lot.
> Here's a few tips to keeping your install safe
>> - change your sip port from default 5060 to something different,
> 5060 is constantly scanned
Is this an option if you take incoming SIP calls?
> - don't use extensions that are easy to guess (like 1000 - scanners
> tend to count from 0 to 9999)
Do you mean extensions or usernames? If one has physical VoIP handsets,
numeric extensions are hard to get away from. The username can be
alphanumeric though, while the extension is still purely numeric.
Gavin
Maintained by the ILUG website team. The aim of Linux.ie is to
support and help commercial and private users of Linux in Ireland. You can
display ILUG news in your own webpages, read backend
information to find out how. Networking services kindly provided by HEAnet, server kindly donated by
Dell. Linux is a trademark of Linus Torvalds,
used with permission. No penguins were harmed in the production or maintenance
of this highly praised website. Looking for the
Indian Linux Users' Group? Try here. If you've read all this and aren't a lawyer: you should be!
