Harder, Faster, Stronger SSH clients

ssh -4 -C -c blowfish-cbc
We force IPv4, compress the stream, specify the cypher stream to be Blowfish. I suppose you could use aes256-ctr as well for cypher spec. I'm of course leaving out things like master control sessions and such as that may not be available on your shell although that would speed things up as well.

18
By: vxbinaca
2009-12-15 00:30:53

What Others Think

You are right in using "Harder" since this command is harder to type than "ssh". :-) To speed test other ciphers, the openssl command provides a speed test which you can run on your own machine: openssl speed aes rc4 blowfish
bwoodacre · 676 weeks and 1 day ago
@bwoodacre Thats why you alias it in your .bashrc. External programs who call it won't be calling the alias.
vxbinaca · 676 weeks and 1 day ago
Or put this in ~/.ssh/config to do the same thing in a more readable way and avoid the alias: Host * AddressFamily inet Compression yes Cipher blowfish
bradleybuda · 676 weeks ago
Forcing ipv4 seems a bit pointless & short-sighted. I for one use IPv6 almost exclusively on my LAN.
snow93 · 675 weeks and 3 days ago
The rest of the world unfortunately uses 4, but 6 can be forced as well. You use it for domains, ex: [alias'd SSH] srv1.domain.com -p 3345
vxbinaca · 675 weeks and 3 days ago
FYI to newcomers: This was great advice when it was posted, but now it's very outdated.
malathion · 187 weeks and 3 days ago
This is an amazingly unremarkable post for specific key clues. I totally agree. drift hunters
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Perfecthomepugs · 4 weeks and 2 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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