I have written a server in C# for windows and it works fine. A week back I setup a dynamic domain name with No-Ip.com and now my server serves pages at the address nabeel.ddns.net. I was viewing my server log and i found two strange requests:
16:41:52 21-04-2015 18.104.22.168 :::: x�|�aAL� �Wͼ����������\�&K��2��Q@�
11:36:21 21-04-2015 22.214.171.124, File: h t t p://24x7-allrequestsallowed.com/
(I changed the log format in between from [time] [date] [ip address] [request path] to [time] [date] [ip address] [whole request])
A whois lookup on both IP Addresses revealed that both were in the net range assigned to RIPE Network Coordination Centre (RIPE). What should i do about this, does this qualify as a DOS attack? Should I email RIPE about this?