I want to setup an VPN server in pfsense and I can choose a lot of Encryption algorithm types ,alot!! What I have read is that the AES 256 (512 is not an option) is the best. Well even then there are a couple of option this is what I can choose from:
I did find this answer https://stackoverflow.com/questions/1220751/how-to-choose-an-aes-encryption-mode-cbc-ecb-ctr-ocb-cfb, but it did not include all options and there are some critic comments on the answer. Of course there is an wikipedia page: http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation , but that does not give me an clear answer on what is the most secure and gives a lot of extra info I do not understand.
Question 1: Is AES 256 the most secure algorithm?
Question 2: If 1 is true then which one of the above list is the most secure?
Many thanks and any thought about this is appreciated!!