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Alternate OpenVPN encryption

Discussion in 'Tomato Firmware' started by lancethepants, Aug 26, 2011.

  1. lancethepants

    lancethepants Network Guru Member

    OpenVPN uses BlowFish for it's default encryption. So my question is, has anyone benchmarked other encryptions (such as AES) against blowfish while running OpenVPN on your router. Is blowfish less computationally stressing to the routers than say AES would be (key lengths depending), or other encyptions? Is it the right balance between strength (though not compromised, receives less attention that AES) and speed?
  2. Kcolyhs

    Kcolyhs Networkin' Nut Member

    Quite a good question!
    If you google: "vpn speed blowfish vs. aes", you should get some relevant links.
    The following link is quite informative: http://blog.tuvpn.com/2011/02/vpn-performance-tests-for-different-ciphers-and-key-strengths/
    I am using AES at the moment because the BF encryption offered by my VPN provider is not as strong as I need.
    I guess you will have to experiment with your setup to see if there is a performance advantage to AES or BF.

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