How do I disable encryption w/SSH? - SSH

This is a discussion on How do I disable encryption w/SSH? - SSH ; First of all, please don't say "what's the point of using SSH" then? There are times when I don't want to use encryption, however, I noticed there is no support for the "none" in cipher in the latest SSH clients ...

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Thread: How do I disable encryption w/SSH?

  1. How do I disable encryption w/SSH?

    First of all, please don't say "what's the point of using SSH" then?

    There are times when I don't want to use encryption, however, I
    noticed there is no support for the "none" in cipher in the latest SSH
    clients and servers.

    Does anyone know how to re-compile support for this back in?

    Let me know. Thanks.


  2. Re: How do I disable encryption w/SSH?

    On 2007-06-04, solletica@gmail.com wrote:
    > First of all, please don't say "what's the point of using SSH" then?
    >

    I still wonder..

    > There are times when I don't want to use encryption, however, I
    > noticed there is no support for the "none" in cipher in the latest SSH
    > clients and servers.


    Why not using rsh/rlogin or telnet then ?
    >
    > Does anyone know how to re-compile support for this back in?
    >


    And you will have to recompile both side.. the client and the server.. I
    think it's easier to enable another type of server that's already don't
    use encryption.. (if you really want too..).

    --
    Martin

  3. Re: How do I disable encryption w/SSH?

    On Jun 4, 8:28 pm, Martin Gagnon wrote:
    > On 2007-06-04, sollet...@gmail.com wrote:> First of all, please don't say "what's the point of using SSH" then?
    >
    > I still wonder..
    >
    > > There are times when I don't want to use encryption, however, I
    > > noticed there is no support for the "none" in cipher in the latest SSH
    > > clients and servers.

    >
    > Why not using rsh/rlogin or telnet then ?
    >
    >
    >
    > > Does anyone know how to re-compile support for this back in?

    >
    > And you will have to recompile both side.. the client and the server.. I
    > think it's easier to enable another type of server that's already don't
    > use encryption.. (if you really want too..).
    >
    > --
    > Martin



    I want to use the DYNAMIC port forwarding feature on SSH w/out the
    overhead of encryption. And yes, even w/the fastest ciphers, there is
    some overhead.


  4. Re: How do I disable encryption w/SSH?

    On 2007-06-05, Siva wrote:
    > On Jun 4, 8:28 pm, Martin Gagnon wrote:
    >> On 2007-06-04, sollet...@gmail.com wrote:> First of all, please don't say "what's the point of using SSH" then?
    >>
    >> I still wonder..
    >>
    >> > There are times when I don't want to use encryption, however, I
    >> > noticed there is no support for the "none" in cipher in the latest SSH
    >> > clients and servers.

    >>
    >> Why not using rsh/rlogin or telnet then ?
    >>
    >>
    >>
    >> > Does anyone know how to re-compile support for this back in?

    >>
    >> And you will have to recompile both side.. the client and the server.. I
    >> think it's easier to enable another type of server that's already don't
    >> use encryption.. (if you really want too..).
    >>

    >
    >
    > I want to use the DYNAMIC port forwarding feature on SSH w/out the
    > overhead of encryption. And yes, even w/the fastest ciphers, there is
    > some overhead.


    Ha.. ok, you may want to install a simple SOCKS4 or sOCKS5 Proxy server
    instead ?

    It's true than using the Dynamic port forwarding feature of OpenSSH is
    usefull.. but installing a SOCKS(4/5) server may be more practical..
    By Recompiling OpenSSH.. you will always have an out of date version as
    long you recompile the client and server once in a while..

    --
    Martin

  5. Re: How do I disable encryption w/SSH?

    >>>>> "solletica" == solletica writes:

    solletica> First of all, please don't say "what's the point of using
    solletica> SSH" then? There are times when I don't want to use
    solletica> encryption, however, I noticed there is no support for the
    solletica> "none" in cipher in the latest SSH clients and servers.

    solletica> Does anyone know how to re-compile support for this back
    solletica> in?

    --------------------------------------------------------------------------------
    --- cipher.c 2007-06-05 11:31:11.000000000 -0400
    +++ cipher.c~ 2006-08-04 22:39:39.000000000 -0400
    @@ -65,7 +65,7 @@
    u_int discard_len;
    const EVP_CIPHER *(*evptype)(void);
    } ciphers[] = {
    - { "none", SSH_CIPHER_SSH2, 8, 0, 0, EVP_enc_null },
    + { "none", SSH_CIPHER_NONE, 8, 0, 0, EVP_enc_null },
    { "des", SSH_CIPHER_DES, 8, 8, 0, EVP_des_cbc },
    { "3des", SSH_CIPHER_3DES, 8, 16, 0, evp_ssh1_3des },
    { "blowfish", SSH_CIPHER_BLOWFISH, 8, 32, 0, evp_ssh1_bf },
    --------------------------------------------------------------------------------

    This works, though I won't swear it doesn't have any unintended side effects.

    --
    Richard Silverman
    res@qoxp.net


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