Need help, Dos attacks and fake e-mails---Stalker!!!

i have a stalker who is saying that i have sent abusive e-mails to him.

is there a way to prove that they originated from his IP and not mine?? even though we use the same ISP? the ISP does nto provide fixed IP addresses for users.

Also worried he is attacking my modem and accessing my IP.

my modem has sent me 7 security alerts this afternoon alone, all DOS and i have no idea how to read them properly. He did have a program on my computer once that allowed him to remotely access his work computers from my laptop, can he have left a ghost program that is allowing him reverse access to my modem / computer without knowing?

Any help would be greatly appreciated as its looking like i will be needing to take out an intervention order against him real soon!!

thanks again

Zoe



The security alerts are as follows:

TCP Packet - Source:32.178.246.176,2065 Destination:110.32.116.248,33258 - [DOS]

TCP Packet - Source:173.34.111.60,63403 Destination:110.32.116.248,33258 - [DOS]

TCP Packet - Source:76.192.204.182,60731 Destination:110.32.116.248,33258 - [DOS]

TCP Packet - Source:41.153.38.67,2626 Destination:110.32.116.248,33258 - [DOS]

TCP Packet - Source:114.103.26.92,14265 Destination:110.32.116.248,33258 - [DOS]

TCP Packet - Source:68.205.231.57,57040 Destination:110.32.116.248,33258 - [DOS]

TCP Packet - Source:69.232.194.176,56233 Destination:110.32.116.248,33258 - [DOS]

TCP Packet - Source:68.205.231.57,57040 Destination:110.32.116.248,33258 - [DOS]

TCP Packet - Source:87.232.65.111,56693 Destination:110.32.116.248,13361 - [DOS]

TCP Packet - Source:67.184.221.16,52225 Destination:110.32.116.248,33258 - [DOS]