Hi. New OpenSSH client will not connect to server that use SHA1.
Please refer to this: https://www.openssh.com/legacy.html You should configure your old server to use more modern cipher Thank you On Sun, 19 Apr 2020, 8:13 pm David Balažic via Cygwin, <cygwin@cygwin.com> wrote: > Hi! > > I tried to backup some files from my server with scp and failed: > > $ scp -v root@the.server:/root/a.file . > Executing: program /usr/bin/ssh host the.server, user root, command > scp -v -f /root/a.file > OpenSSH_8.2p1, OpenSSL 1.1.1f 31 Mar 2020 > debug1: Connecting to the.server [192.168.1.11] port 22. > debug1: Connection established. > debug1: identity file /home/stein/.ssh/id_rsa type -1 > debug1: identity file /home/stein/.ssh/id_rsa-cert type -1 > debug1: identity file /home/stein/.ssh/id_dsa type -1 > debug1: identity file /home/stein/.ssh/id_dsa-cert type -1 > debug1: identity file /home/stein/.ssh/id_ecdsa type -1 > debug1: identity file /home/stein/.ssh/id_ecdsa-cert type -1 > debug1: identity file /home/stein/.ssh/id_ecdsa_sk type -1 > debug1: identity file /home/stein/.ssh/id_ecdsa_sk-cert type -1 > debug1: identity file /home/stein/.ssh/id_ed25519 type -1 > debug1: identity file /home/stein/.ssh/id_ed25519-cert type -1 > debug1: identity file /home/stein/.ssh/id_ed25519_sk type -1 > debug1: identity file /home/stein/.ssh/id_ed25519_sk-cert type -1 > debug1: identity file /home/stein/.ssh/id_xmss type -1 > debug1: identity file /home/stein/.ssh/id_xmss-cert type -1 > debug1: Local version string SSH-2.0-OpenSSH_8.2 > debug1: Remote protocol version 2.0, remote software version > dropbear_2011.54 > debug1: no match: dropbear_2011.54 > debug1: Authenticating to the.server:22 as 'root' > debug1: SSH2_MSG_KEXINIT sent > debug1: SSH2_MSG_KEXINIT received > debug1: kex: algorithm: (no match) > Unable to negotiate with 192.168.1.11 port 22: no matching key > exchange method found. Their offer: > diffie-hellman-group1-sha1,diffie-hellman-group14-sha1 > > > I tried OpenSSH_8.0p1-2 which is still available in the cygwin > setup-x86_64.exe wizard and that version works fine. > (the version above is 8.2.p1-1 in the setup wizard) > > Regards, > David > -- > Problem reports: https://cygwin.com/problems.html > FAQ: https://cygwin.com/faq/ > Documentation: https://cygwin.com/docs.html > Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple > -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
