{"id":236,"date":"2022-05-02T09:29:57","date_gmt":"2022-05-02T14:29:57","guid":{"rendered":"https:\/\/tech.my-netsol.com\/?p=236"},"modified":"2024-04-29T22:54:21","modified_gmt":"2024-04-30T03:54:21","slug":"ssh-cipher-mismatch","status":"publish","type":"post","link":"https:\/\/tech.my-netsol.com\/?p=236","title":{"rendered":"SSH cipher mismatch!?"},"content":{"rendered":"
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“Unable to negotiate with 192.168.1.3 port 22: no matching cipher found. Their offer: 3des-cbc” ?! <\/p><\/blockquote><\/figure>\n\n\n\n

I’ve seen similar errors before, didn’t make good notes on how it was resolved.. so here are a couple of items.<\/p>\n\n\n\n

1 – nano ~\/.ssh\/config and set the connection parameters for each server you often connect to using the example below: – there are other items you can provide but this is all I needed to login!<\/p>\n\n\n\n

Host myserver\n\tHostname my-linux-host.local\n\tUser angeln\n\tPort 22\n\tCiphers 3des-cbc<\/pre>\n\n\n\n
There are other things you can do, like add ciphers to the server – but I don’t cover that here.  If elect to try it, i’ll post some details here in the future.  Google It!?<\/a><\/strong><\/p>\n\n\n\n
FYI – a new useful tool, you can use verbose mode to see the ciphers the client is trying and the server is responding too … ssh -vvv angeln@192.168.1.3<\/p>\n\n\n\n
     -v      Verbose mode.  Causes ssh to print debugging messages about\n             its progress.  This is helpful in debugging connection,\n             authentication, and configuration problems.  Multiple -v\n             options increase the verbosity.  The maximum is 3<\/em><\/pre>\n","protected":false},"excerpt":{"rendered":"
“Unable to negotiate with 192.168.1.3 port 22: no matching cipher found. Their offer: 3des-cbc” ?! I’ve seen similar errors before, didn’t make good notes on how it was resolved.. so here are a couple of items. 1 – nano ~\/.ssh\/config and set the connection parameters for each server you often connect to using the example … Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[11],"tags":[],"class_list":["post-236","post","type-post","status-publish","format-standard","hentry","category-linux"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/tech.my-netsol.com\/index.php?rest_route=\/wp\/v2\/posts\/236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tech.my-netsol.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tech.my-netsol.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tech.my-netsol.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/tech.my-netsol.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=236"}],"version-history":[{"count":2,"href":"https:\/\/tech.my-netsol.com\/index.php?rest_route=\/wp\/v2\/posts\/236\/revisions"}],"predecessor-version":[{"id":287,"href":"https:\/\/tech.my-netsol.com\/index.php?rest_route=\/wp\/v2\/posts\/236\/revisions\/287"}],"wp:attachment":[{"href":"https:\/\/tech.my-netsol.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tech.my-netsol.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tech.my-netsol.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}