{"id":1246,"date":"2022-12-01T09:51:51","date_gmt":"2022-12-01T09:51:51","guid":{"rendered":"https:\/\/editjournal.redakt.eu\/faxmodem\/?p=1246"},"modified":"2023-02-28T10:55:05","modified_gmt":"2023-02-28T10:55:05","slug":"certbot-standalone-not-able-to-bind-to-ipv4-and-fails-authorization-procedure","status":"publish","type":"post","link":"https:\/\/editjournal.redakt.eu\/faxmodem\/blog\/servers\/certbot-standalone-not-able-to-bind-to-ipv4-and-fails-authorization-procedure\/","title":{"rendered":"Certbot standalone not able to bind to IPv4 and fails authorization procedure?"},"content":{"rendered":"

One way to run certbot<\/code> would be standalone on a custom port, having Nginx receive the ACME verification on port 80 (standard and can not be changed) and proxy_pass<\/code> it to that custom port.<\/p>\n

If you try that and get the following error, heads up: it may be misleading.<\/p>\n

\n

Successfully bound to :8080 using IPv6
\nCertbot wasn't able to bind to :8080 using IPv4, this is often expected due to the dual stack nature of IPv6 socket implementations.
\nWaiting for verification...<\/p>\n<\/blockquote>\n

If you don't have IPv6 on your system, your first thought must be that the verification fails because of the port. But most likely, that's not the case.<\/p>\n

https:\/\/eff-certbot.readthedocs.io\/en\/stable\/using.html<\/a>:<\/p>\n

\n

On most Linux systems, IPv4 traffic will be routed to the bound IPv6 port and the failure during the second bind is expected.<\/p>\n<\/blockquote>\n

Or, as the letsencrypt community forum puts it,<\/p>\n

\n

The IPv4\/IPv6 message is likely to be a red herring. It usually means that Certbot has bound both address families in a single socket binding.<\/p>\n<\/blockquote>\n

The error must be coming from elsewhere. Pause the challenges using --debug-challenges<\/code>, and debug your Nginx configuration. It will stop and wait, and the output will look like this:<\/p>\n

Received response:\nHTTP 200\nRetry-After: 5\nLink: <https:\/\/dv.acme-v02.api.example-ca\/directory>;rel="index"\nReplay-Nonce: AEQAAAAK\u2026\nContent-Type: application\/json\nContent-Encoding: gzip\nServer: scaffolding on HTTPServer2\nCache-Control: private\nX-XSS-Protection: 0\nX-Frame-Options: SAMEORIGIN\nTransfer-Encoding: chunked\n\n{"identifier":{"type":"dns","value":"www.example.com"},"status":"pending","expires":"2023-03-28T09:52:06.845338956Z","challenges":[{"type":"http-01","url":"https:\/\/dv.acme-v02.api.example-ca\/challenge\/yyut\u2026","status":"pending","token":"fTMY\u2026ys5G"},{"type":"dns-01","url":"https:\/\/dv.acme-v02.api.example-ca\/challenge\/0Lwd\u2026","status":"pending","token":"yNol\u2026"},{"type":"tls-alpn-01","url":"https:\/\/dv.acme-v02.api.example-ca\/challenge\/-0tP\u2026","status":"pending","token":"W2hS\u2026"}]}\nStoring nonce: AEQAAAAK\u2026\nPerforming the following challenges:\nhttp-01 challenge for www.example.com\nSuccessfully bound to :8008 using IPv6\nCertbot wasn't able to bind to :8008 using IPv4, this is often expected due to the dual stack nature of IPv6 socket implementations.\nWaiting for verification...\n\nChallenges loaded. Press continue to submit to CA. Pass "-v" for more info about\nchallenges.<\/code><\/pre>\n
You will need the challenges<\/code> \u2192 token<\/code> value. The URL you should test in the above example is: <\/p>\n
http:\/\/www.example.com\/.well-known\/acme-challenge\/fTMY\u2026ys5G<\/code><\/pre>\n
Keep in mind: challenges do not stop when renewing<\/a>, so you may have to run certonly<\/code> instead:<\/p>\n
certbot certonly --standalone --http-01-port 8008 --post-hook \"service nginx reload\" --cert-name=\"www.example.com\" -v --debug-challenges<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
One way to run certbot would be standalone on a custom port, having Nginx receive the ACME verification on port 80 (standard and can not be changed) and proxy_pass it to that custom port. If you try that and get the following error, heads up: it may be misleading. Successfully bound to :8080 using IPv6… Continue reading Certbot standalone not able to bind to IPv4 and fails authorization procedure?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[956],"tags":[989,775,982],"class_list":["post-1246","post","type-post","status-publish","format-standard","hentry","category-servers","tag-certbot","tag-debian","tag-ssl","entry"],"_links":{"self":[{"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/posts\/1246","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/comments?post=1246"}],"version-history":[{"count":4,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/posts\/1246\/revisions"}],"predecessor-version":[{"id":1314,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/posts\/1246\/revisions\/1314"}],"wp:attachment":[{"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/media?parent=1246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/categories?post=1246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/tags?post=1246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}