Newer SSH client cannot connect to older SSH server (dropbear openwrt) because:<\/p>\n\n\n\n
The RSA SHA-1 hash algorithm is being quickly deprecated across operating systems and SSH clients because of various security vulnerabilities, with many of these technologies now outright denying the use of this algorithm.<\/p>\n\n\n\n
error message: no mutual signature algorithm<\/strong><\/p>\n\n\n\n edit \/etc\/ssh\/ssh_config<\/p>\n\n\n\n HostKeyAlgorithms=+ssh-rsa error message: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,kexguess2@matt.ucc.asn.au<\/strong><\/p>\n\n\n\n Windows, the OpenSSH Client (ssh) reads configuration data from a configuration file in the following order:<\/p>\n\n\n\n The OpenSSH website has a page dedicated to legacy issues such as this one. It suggests the following approach, on the client:<\/p>\n\n\n\n ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 123.123.123.123<\/p>\n\n\n\n or more permanently, adding<\/p>\n\n\n\n Host 123.123.123.123 The OpenSSH website has a page dedicated to legacy issues such as this one. It suggests the following approach, on the client:<\/p>\n\n\n\n ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 123.123.123.123<\/p>\n\n\n\n or more permanently, adding<\/p>\n\n\n\n Host 123.123.123.123 to ~\/.ssh\/config<\/p>\n\n\n\n https:\/\/confluence.atlassian.com\/bitbucketserverkb\/ssh-rsa-key-rejected-with-message-no-mutual-signature-algorithm-1026057701.html<\/a> Newer SSH client cannot connect to older SSH server (dropbear openwrt) because: The RSA SHA-1 hash algorithm is being quickly deprecated across operating systems and SSH clients because of various security vulnerabilities, with many of these technologies now outright denying the use of this algorithm. error message: no mutual signature algorithm edit \/etc\/ssh\/ssh_config HostKeyAlgorithms=+ssh-rsaPubkeyAuthentication yesPubkeyAcceptedKeyTypes=+ssh-rsa … Continue reading “Older SSH Server Compatibility”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-338","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/posts\/338","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/comments?post=338"}],"version-history":[{"count":3,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/posts\/338\/revisions"}],"predecessor-version":[{"id":457,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/posts\/338\/revisions\/457"}],"wp:attachment":[{"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/media?parent=338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/categories?post=338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/tags?post=338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
PubkeyAuthentication yes
PubkeyAcceptedKeyTypes=+ssh-rsa<\/p>\n\n\n\nBy launching ssh.exe with the -F parameter, specifying a path to a configuration file and an entry name from that file.\nA user's configuration file at %userprofile%\\.ssh\\config.\nThe system-wide configuration file at %programdata%\\ssh\\ssh_config.<\/code><\/pre>\n\n\n\n
KexAlgorithms +diffie-hellman-group1-sha1<\/p>\n\n\n\n
KexAlgorithms +diffie-hellman-group1-sha1<\/p>\n\n\n\n
https:\/\/learn.microsoft.com\/en-us\/windows-server\/administration\/openssh\/openssh_server_configuration
https:\/\/unix.stackexchange.com\/questions\/340844\/how-to-enable-diffie-hellman-group1-sha1-key-exchange-on-debian-8-0<\/p>\n","protected":false},"excerpt":{"rendered":"