[Openswan Users] BM 3.8 proposals

Peter McGill petermcgill at goco.net
Fri Oct 20 11:09:44 EDT 2006


> 10-20-2006 1:57:11 pm Warn :Proposal mismatch  PHASE 1  HASH Algorithm mismatch  mine : SHA  his : MD5   dst : 194.213.50.98  src 
> : 195.39.44.34  cookies[mine :his]  C086F55898B016BA : EF3606AB00000004
>10-20-2006 1:57:11 pm Warn :Proposal mismatch  PHASE 1  DH Group mismatch   mine : 2     his :  unsupported DH Group 5     dst : 
>194.213.50.98  src : 195.39.44.34  cookies[mine :his]  C086F55898B016BA : EF3606AB00000010
> 10-20-2006 1:57:11 pm Warn :Proposal mismatch  PHASE 1  Encryption Algorithm mismatch   mine : DES  his : 3DES   dst : 
> 194.213.50.98  src : 195.39.44.34  cookies[mine :his]  C086F55898B016BA : EF3606AB00000002

Looks to me like the borderware wants (Single) DES, SHA(1), DH Group 2 (1024 bits).

However, DES is broken, insecure, useless, etc... and as such not allowed by default in Openswan.
You need to update your Borderware to a newer version that supports better encryption,
like 3DES or AES, or if it does support them, enable them on the Borderware.

If you do get 3DES working on the Borderware, you should connect by adding these two lines
to your Openswan ipsec.conf in your conn section:
conn as
    ike=3des-sha1-modp1024
    esp=3des-sha1


Peter McGill
Software Developer / Network Administrator
Gra Ham Energy Limited 



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