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        before being able to upvote. Upvoting indicates when questions and answers are useful. (https://stackoverflow.com/help/whats-reputation) What's reputation and how do I get it?  Instead, you can save this post to reference later.     Save this post for later Not now           (https://cdn.sstatic.net/Sites/stackoverflow/Img/apple-touch-icon.png?v=c78bd457575a) (/questions/35472363/how-to-reroute-sftp-traffic-via-nginx) How to reroute SFTP traffic via NGINX  (/questions/ask) Ask Question     (2016-02-18 03:37:53Z) Asked 9 years, 1 month ago  Modified (?lastactivity) (2021-10-13 23:07:32Z) 3 years, 6 months ago  (Viewed 25,638 times) Viewed 26k times         This question shows research effort; it is useful and clear  (70:3:31e,16:3d1272724944ee3d,10:1744425657,16:bb484da241a35a64,8:35472363,a551cc19f701983577c403aa680e0e2743ed76cc66a0f3665e6baff196e6926f) 0  (This question does not show any research effort; it is unclear or not useful)    (70:3:31e,16:6d6d0688008cad31,10:1744425657,16:e00c65e406357693,8:35472363,a932bc555566770c8ed324f27e70e7d74c97acb62dd8af38c04ce75d74d332f1)      Save this question.  (/posts/35472363/timeline)    Show activity on this post.    I'm trying to setup an FTP subdomain, such that all incoming SFTP requests to (say) ftp.myname.com, get routed to a particular internal server, (say) 10.123.456 via port 22. How do I use nginx to route this traffic? I've already setup the SFTP server, and can SFTP directly to the server, say: sftp username@123.456.7890, which works fine. The problem is that when I setup nginx to route all traffic to ftp.myname.com, it connects, but the passwords get rejected. I have no problems routing web traffic to my other subdomains, say dev.myname.com (with passwords), but it doesn't work for the SFTP traffic: server {
    listen 22;
    server_name ftp.myname.com;
    return .............
}   How do I define the return sting to route the traffic with the passwords?  The connection is SFTP (via port 22). Thanks  (/questions/tagged/nginx) (show questions tagged 'nginx') nginx  (/questions/tagged/ftp) (show questions tagged 'ftp') ftp  (/questions/tagged/sftp) (show questions tagged 'sftp') sftp      (/q/35472363) (Short permalink to this question) Share  Share a link to this question     Copy link (https://creativecommons.org/licenses/by-sa/3.0/) (The current license for this post: CC BY-SA 3.0) CC BY-SA 3.0     (/posts/35472363/edit) () Improve this question  Follow (70:3:31e,16:386cc929b19f29ab,10:1744425657,16:2d95f95145d01b30,8:35472363,e00beb5a5c06d04472858902fcf70615d63130c092d92a32eef181a6d5766e8e)  Follow this question to receive notifications       (/posts/35472363/revisions) (show all edits to this post) edited (2016-02-18 03:56:41Z) Feb 18, 2016 at 3:56     vgoklani     asked (2016-02-18 03:37:53Z) Feb 18, 2016 at 3:37   (/users/190894/vgoklani) (vgoklani's user avatar)    (/users/190894/vgoklani) vgoklani vgoklani (reputation score 11,806) 11.8k (19 gold badges)  19  19 gold badges (69 silver badges)  69  69 silver badges (107 bronze badges)  107  107 bronze badges        1 (number of 'useful comment' votes received) 1   just a note: sftp uses ssh-server to connect to. If you define nginx to listen to port 22, it expects a http / https connection to this port. In my personal opinion you cannot forward a sftp request send to nginx to ssh-server. check what ports your services listen to, so ssh-server (for sftp connections) might already listen on port22 to accept connections. you might restrict connections to port 22 via ufw. To get a special subdomain to listen only to port 22, someone else might help out. – (/users/3699457/semm0) (947 reputation) semm0  Commented (2016-02-18 08:41:16Z, License: CC BY-SA 3.0) Feb 18, 2016 at 8:41        (Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.) Add a comment |  (Expand to show all comments on this post)          2 Answers 2   Sorted by:  (/questions/35472363/how-to-reroute-sftp-traffic-via-nginx?answertab=scoredesc#tab-top) Reset to default   (scoredesc) Highest score (default)  (trending) Trending (recent votes count more)  (modifieddesc) Date modified (newest first)  (createdasc) Date created (oldest first)            This answer is useful  (70:3:31e,16:9c0db051b6182952,10:1744425657,16:718789333f2e055a,8:50983056,8aaec8f6a0eb52f3740b87ef98a38f54354ab4233643b94e4f3203cad01678d2) 1  (This answer is not useful)    (70:3:31e,16:65b66fe5dc58917d,10:1744425657,16:4c65f8374ab54ede,8:50983056,9be3a4104bb20c8d0af99d8d93fb4a2f80ea17e9c0db96c9c1ae4eaf1009a8a1)      Save this answer.  (Loading when this answer was accepted…)     (/posts/50983056/timeline)    Show activity on this post.    Aswering to @peixotorms: yes, you can.  nginx can proxy/load balance http as well as tcp and udp traffic, see nginx stream modules documentation (at the (http://nginx.org/en/docs/) nginx main documentation page ) , and specifically the (http://nginx.org/en/docs/stream/ngx_stream_core_module.html) stream core module's documentation .   (/a/50983056) (Short permalink to this answer) Share  Share a link to this answer     Copy link (https://creativecommons.org/licenses/by-sa/4.0/) (The current license for this post: CC BY-SA 4.0) CC BY-SA 4.0     (/posts/50983056/edit) () Improve this answer  Follow (70:3:31e,16:12a6ec3d0accb7ad,10:1744425657,16:14cda87bfe428131,8:50983056,e83431ba96f055778bcae13237566883df92082e0dc7d8f677297772bced1d5e)  Follow this answer to receive notifications       (/posts/50983056/revisions) (show all edits to this post) edited (2021-10-13 23:07:32Z) Oct 13, 2021 at 23:07    (/users/477494/uncle-iroh) (Uncle Iroh's user avatar)    (/users/477494/uncle-iroh) Uncle Iroh (reputation score) 6,085 (6 gold badges)  6  6 gold badges (54 silver badges)  54  54 silver badges (64 bronze badges)  64  64 bronze badges     answered (2018-06-22 07:42:20Z) Jun 22, 2018 at 7:42   (/users/9977019/maxim-konovalov) (Maxim Konovalov's user avatar)    (/users/9977019/maxim-konovalov) Maxim Konovalov Maxim Konovalov (reputation score) 11 (1 bronze badge)  1  1 bronze badge        1 (number of 'useful comment' votes received) 3   (This post does not seem to provide a (https://stackoverflow.com/help/how-to-answer) quality answer to the question. Please either edit your answer, or just post it as a comment to the question). – (/users/823321/s%c9%90un%c4%b1%c9%94%d7%9f%c9%90q%c9%90p) (3,552 reputation) sɐunıɔןɐqɐp  Commented (2018-06-22 07:59:24Z, License: CC BY-SA 4.0) Jun 22, 2018 at 7:59        (Use comments to ask for more information or suggest improvements. Avoid comments like “+1” or “thanks”.) Add a comment |  (Expand to show all comments on this post)             This answer is useful  (70:3:31e,16:3bb35e272de0a570,10:1744425657,16:f00ada8e83adacda,8:35485318,26a2abec47ae2e86a86304a1ccde123a6f0dc7c97bd6441864d75f13d51eb37c) -1  (This answer is not useful)    (70:3:31e,16:974a8682b7801c21,10:1744425657,16:81f260f450f35a4d,8:35485318,bcfc5b06d6a2cfa70af2fbab8b0196ca531331afc3e4190dd53265db578102b6)      Save this answer.  (Loading when this answer was accepted…)     (/posts/35485318/timeline)    Show activity on this post.    You cannot do this on nginx (http only), you must use something like HaProxy and a simple dns record for your subdomain pointing to the server ip. Some info: (http://jpmorris-iso.blogspot.pt/2013/01/load-balancing-openssh-sftp-with-haproxy.html) http://jpmorris-iso.blogspot.pt/2013/01/load-balancing-openssh-sftp-with-haproxy.html  Edit:  Since nginx version 1.15.2 it's now possible to do that using the variable $ssl_preread_protocol. The official blog added post about how to use this variable for multiplexing HTTPS and SSH on the same port. (https://www.nginx.com/blog/running-non-ssl-protocols-over-ssl-port-nginx-1-15-2/) https://www.nginx.com/blog/running-non-ssl-protocols-over-ssl-port-nginx-1-15-2/  Example of configuring SSH on an upstream block: stream {
    upstream ssh {
        server 192.0.2.1:22;
    }

    upstream sslweb {
        server 192.0.2.2:443;
    }

    map $ssl_preread_protocol $upstream {
        default ssh;
        "TLSv1.2" sslweb;
    }

    # SSH and SSL on the same port
    server {
        listen 443;
        proxy_pass $upstream;
        ssl_preread on;
    }
}     (/a/35485318) (Short permalink to this answer) Share  Share a link to this answer     Copy link (https://creativecommons.org/licenses/by-sa/4.0/) (The current license for this post: CC BY-SA 4.0) CC BY-SA 4.0     (/posts/35485318/edit) () Improve this answer  Follow (70:3:31e,16:1ae23dc4f2b5784e,10:1744425657,16:0c90d88f2a5539d9,8:35485318,637d6c74543f2a33c957b9a737290308e887979f13c71eb3eb08c6f13c0627cb)  Follow this answer to receive notifications       (/posts/35485318/revisions) (show all edits to this post) edited (2020-04-30 09:57:52Z) Apr 30, 2020 at 9:57         answered (2016-02-18 15:16:24Z) Feb 18, 2016 at 15:16   (/users/4232534/peixotorms) (peixotorms's user avatar)    (/users/4232534/peixotorms) peixotorms peixotorms (reputation score) 1,283 (1 gold badge)  1  1 gold badge (11 silver badges)  11  11 silver badges (21 bronze badges)  21  21 bronze badges        1 (number of 'useful comment' votes received) 1   is there a way to have a combination SSH, HTTPS and HTTP ? can i achieve with ssl_preread all three? – (/users/993463/lonko) (379 reputation) Lonko  Commented (2021-09-19 11:27:50Z, License: CC BY-SA 4.0) Sep 19, 2021 at 11:27        (Use comments to ask for more information or suggest improvements. 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