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@JamesOBenson
JamesOBenson / Generating a secure SSH Key and commands
Last active October 16, 2023 06:45
SSH Generation and commands.
ssh-keygen
-t ed25519 - for greatest security (bits are a fixed size and -b flag will be ignored)
-t rsa - for greatest portability (key needs to be greater than 4096 bits)
-t ecdsa - faster than RSA or DSA (bits can only be 256, 284, or 521)
-t dsa - DEEMED INSECURE - DSA limted to 1024 bit key as specified by FIPS 186-2, No longer allowed by default in OpenSSH 7.0+
-t rsa1 - DEEMED INSECURE - has weaknesses and shouldn't be used (used in protocol 1)
-b 4096 bit size
-a 500 rounds (should be no smaller than 64, result in slower passphrase verification and increased resistance to brute-force password cracking)
-C "First.Last@somewhere.com" comment..
@kometchtech
kometchtech / dnstest_2018-4-21
Last active May 29, 2021 10:09
public dns list (2018/07) <Please tell me about Public DNS!>
location: Japan/Tokyo
test1 test2 test3 test4 test5 test6 test7 test8 test9 test10 Average
cloudflare 7 ms 6 ms 5 ms 5 ms 5 ms 5 ms 5 ms 4 ms 5 ms 10 ms 5.70
level3 5 ms 6 ms 5 ms 4 ms 8 ms 4 ms 4 ms 9 ms 4 ms 14 ms 6.30
192.168.1.3 3 ms 14 ms 5 ms 10 ms 14 ms 10 ms 4 ms 10 ms 7 ms 16 ms 9.30
cleanbrowsing 11 ms 17 ms 9 ms 6 ms 5 ms 10 ms 13 ms 15 ms 5 ms 14 ms 10.50
neustar 11 ms 10 ms 9 ms 9 ms 15 ms 9 ms 9 ms 14 ms 8 ms 12 ms 10.60
norton 14 ms 13 ms 9 ms 14 ms 9 ms 9 ms 9 ms 12 ms 12 ms 9 ms 11.00
192.168.1.4 18 ms 174 ms 12 ms 12 ms 13 ms 11 ms 20 ms 14 ms 3 ms 15 ms 29.20