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Check speed of ssh cipher(s) on your system
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| # Based on: | |
| # http://www.systutorials.com/5450/improving-sshscp-performance-by-choosing-ciphers/#comment-28725 | |
| ciphers="$(egrep '^\s*Ciphers' /etc/ssh/sshd_config|sed 's/Ciphers//; s/,/ /')" | |
| if [[ -n "$ciphers" ]]; then | |
| echo "/etc/ssh/sshd_config allows these ciphers: $ciphers" | |
| else | |
| ciphers="$(ssh -Q cipher)" | |
| echo "ssh -Q cipher reports these ciphers: $ciphers" | |
| else | |
| read -rd '' ciphers <<EOF | |
| 3des-cbc aes128-cbc aes128-ctr [email protected] aes192-cbc aes192-ctr | |
| aes256-cbc aes256-ctr [email protected] arcfour arcfour128 arcfour256 | |
| blowfish-cbc cast128-cbc [email protected] [email protected] | |
| EOF | |
| fi | |
| for i in $ciphers | |
| do | |
| dd if=/dev/zero bs=1000000 count=1000 2> /dev/null | | |
| ssh -c $i localhost "(time -p cat) > /dev/null" 2>&1 | | |
| grep real | awk '{print "'$i': "1000 / $2" MB/s" }' | |
| done | |
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I added a feature (name remote host) and a little doc, and fixed a bug (only one comma in list of ciphers converted to space)...
https://gist.github.com/joeharr4/c7599c52f9fad9e53f62e9c8ae690e6b
There's no pull requests in gist, so here's the fork you can pull back.
--jh--