BASIC DDOS PROTECTION
STEP 1: UPDATE SKYPE
Update your copy of Skype by either selecting "Check for Updates" from the Help drop-down menu or visiting http://www.skype.com/en/download-skype/skype-for-computer/. Then, open the options menu (Tools > Options) and make sure the "Allow direct connections to your contacts only" is checked (found under Advanced > Connection). This protects your IP from people not on your contact list. However, your IP remains exposed to your contact list.
Please also keep in mind that the best protection against revealing your IP address to potentially malicious parties on Skype is to add only people you know and trust!
STEP 2: PROXY SKYPE CONNECTION
Proxying your Skype is a fairly simple process, and is covered in this article:
https://support.skype.com/en/faq/FA1017/can-i-connect-to-skype-through-a-proxy-server
There are many sources of free proxy servers available online. A few are referenced below and have options for many different countries. Find a server listed near you and test it out, and ensure that your Skype is functioning properly. This will mean the IP address shown to your Skype contacts is not your actual IP address. You must proxy Skype on every single device you use, including mobile phones or tablets.
http://www.proxynova.com/proxy-server-list/
http://www.hidemyass.com/proxy-list/search-226604
STEP 3: CHANGING YOUR IP ADDRESS
Even if you’re proxying Skype, you are still at risk for an attack if someone has already acquired your IP address. The majority of ISPs will change your IP address at your request. Find a customer service or technical support contact at your ISP and ask for a new IP address. If for some reason they will not help you change your IP address, you can attempt to force an IP change by unplugging every PC, router, modem, or other network hardware and computer from the internet for a period of 24 hours. Confirm that the reset worked by visiting http://www.whatismyip.com before and after the reset.
Keep in mind that protecting your connection is the player’s responsibility.
UnknowN8DE/Torben