Cannot get a Certificate

Help
1

Hi, i cant get a Certificate on my Domain. Heres the Error:

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator nginx, Installer nginx

Which names would you like to activate HTTPS for?
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
1: panel.keksssmp.de
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Select the appropriate numbers separated by commas and/or spaces, or leave input
blank to select all options shown (Enter 'c' to cancel): 1
Requesting a certificate for panel.keksssmp.de
Performing the following challenges:
http-01 challenge for panel.keksssmp.de
Waiting for verification...
Challenge failed for domain panel.keksssmp.de
http-01 challenge for panel.keksssmp.de

Certbot failed to authenticate some domains (authenticator: nginx). The Certificate Authority reported these problems:
  Domain: panel.keksssmp.de
  Type:   connection
  Detail: 85.202.163.65: Fetching http://panel.keksssmp.de/.well-known/acme-challenge/N5Zi0QDGnan18Pt3rJR7-NP4MCGG6beEZj6ZAemsEpE: Connection reset by peer

Hint: The Certificate Authority failed to verify the temporary nginx configuration changes made by Certbot. Ensure the listed domains point to this nginx server and that it is accessible from the internet.

Cleaning up challenges
Some challenges have failed.
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.

I also have enabled all ports, and retried that Command but i keep getting this error.

2

Hi @KeksmitMilch, and welcome to the LE community forum :slight_smile:

It seems that all requests are being trapped by the Pterodactyl login page.
Let's have a look at the complete nginx config, with the output of:

nginx -T

4 Likes
3

i executed it and heres the result

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
# configuration file /etc/nginx/nginx.conf:
user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
        worker_connections 768;
        # multi_accept on;
}

http {

        ##
        # Basic Settings
        ##

        sendfile on;
        tcp_nopush on;
        types_hash_max_size 2048;
        # server_tokens off;

        # server_names_hash_bucket_size 64;
        # server_name_in_redirect off;

        include /etc/nginx/mime.types;
        default_type application/octet-stream;

        ##
        # SSL Settings
        ##

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; # Dropping SSLv3, ref: POODLE
        ssl_prefer_server_ciphers on;

        ##
        # Logging Settings
        ##

        access_log /var/log/nginx/access.log;
        error_log /var/log/nginx/error.log;

        ##
        # Gzip Settings
        ##

        gzip on;

        # gzip_vary on;
        # gzip_proxied any;
        # gzip_comp_level 6;
        # gzip_buffers 16 8k;
        # gzip_http_version 1.1;
        # gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

        ##
        # Virtual Host Configs
        ##

        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*;
}


#mail {
#       # See sample authentication script at:
#       # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
#
#       # auth_http localhost/auth.php;
#       # pop3_capabilities "TOP" "USER";
#       # imap_capabilities "IMAP4rev1" "UIDPLUS";
#
#       server {
#               listen     localhost:110;
#               protocol   pop3;
#               proxy      on;
#       }
#
#       server {
#               listen     localhost:143;
#               protocol   imap;
#               proxy      on;
#       }
#}

# configuration file /etc/nginx/modules-enabled/50-mod-http-geoip2.conf:
load_module modules/ngx_http_geoip2_module.so;

# configuration file /etc/nginx/modules-enabled/50-mod-http-image-filter.conf:
load_module modules/ngx_http_image_filter_module.so;

# configuration file /etc/nginx/modules-enabled/50-mod-http-xslt-filter.conf:
load_module modules/ngx_http_xslt_filter_module.so;

# configuration file /etc/nginx/modules-enabled/50-mod-mail.conf:
load_module modules/ngx_mail_module.so;

# configuration file /etc/nginx/modules-enabled/50-mod-stream.conf:
load_module modules/ngx_stream_module.so;

# configuration file /etc/nginx/modules-enabled/70-mod-stream-geoip2.conf:
load_module modules/ngx_stream_geoip2_module.so;

# configuration file /etc/nginx/mime.types:

types {
    text/html                             html htm shtml;
    text/css                              css;
    text/xml                              xml;
    image/gif                             gif;
    image/jpeg                            jpeg jpg;
    application/javascript                js;
    application/atom+xml                  atom;
    application/rss+xml                   rss;

    text/mathml                           mml;
    text/plain                            txt;
    text/vnd.sun.j2me.app-descriptor      jad;
    text/vnd.wap.wml                      wml;
    text/x-component                      htc;

    image/png                             png;
    image/tiff                            tif tiff;
    image/vnd.wap.wbmp                    wbmp;
    image/x-icon                          ico;
    image/x-jng                           jng;
    image/x-ms-bmp                        bmp;
    image/svg+xml                         svg svgz;
    image/webp                            webp;

    application/font-woff                 woff;
    application/java-archive              jar war ear;
    application/json                      json;
    application/mac-binhex40              hqx;
    application/msword                    doc;
    application/pdf                       pdf;
    application/postscript                ps eps ai;
    application/rtf                       rtf;
    application/vnd.apple.mpegurl         m3u8;
    application/vnd.ms-excel              xls;
    application/vnd.ms-fontobject         eot;
    application/vnd.ms-powerpoint         ppt;
    application/vnd.wap.wmlc              wmlc;
    application/vnd.google-earth.kml+xml  kml;
    application/vnd.google-earth.kmz      kmz;
    application/x-7z-compressed           7z;
    application/x-cocoa                   cco;
    application/x-java-archive-diff       jardiff;
    application/x-java-jnlp-file          jnlp;
    application/x-makeself                run;
    application/x-perl                    pl pm;
    application/x-pilot                   prc pdb;
    application/x-rar-compressed          rar;
    application/x-redhat-package-manager  rpm;
    application/x-sea                     sea;
    application/x-shockwave-flash         swf;
    application/x-stuffit                 sit;
    application/x-tcl                     tcl tk;
    application/x-x509-ca-cert            der pem crt;
    application/x-xpinstall               xpi;
    application/xhtml+xml                 xhtml;
    application/xspf+xml                  xspf;
    application/zip                       zip;

    application/octet-stream              bin exe dll;
    application/octet-stream              deb;
    application/octet-stream              dmg;
    application/octet-stream              iso img;
    application/octet-stream              msi msp msm;

    application/vnd.openxmlformats-officedocument.wordprocessingml.document    docx;
    application/vnd.openxmlformats-officedocument.spreadsheetml.sheet          xlsx;
    application/vnd.openxmlformats-officedocument.presentationml.presentation  pptx;

    audio/midi                            mid midi kar;
    audio/mpeg                            mp3;
    audio/ogg                             ogg;
    audio/x-m4a                           m4a;
    audio/x-realaudio                     ra;

    video/3gpp                            3gpp 3gp;
    video/mp2t                            ts;
    video/mp4                             mp4;
    video/mpeg                            mpeg mpg;
    video/quicktime                       mov;
    video/webm                            webm;
    video/x-flv                           flv;
    video/x-m4v                           m4v;
    video/x-mng                           mng;
    video/x-ms-asf                        asx asf;
    video/x-ms-wmv                        wmv;
    video/x-msvideo                       avi;
}

# configuration file /etc/nginx/sites-enabled/pterodactyl.conf:
server {
    listen 80;
    listen [::]:80;

    server_name panel.keksssmp.de;

    root /var/www/pterodactyl/public;
    index index.html index.htm index.php;
    charset utf-8;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }

    location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    access_log off;
    error_log  /var/log/nginx/pterodactyl.app-error.log error;

    # allow larger file uploads and longer script runtimes
    client_max_body_size 100m;
    client_body_timeout 120s;

    sendfile off;

    location ~ \.php$ {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/run/php/php8.1-fpm.sock;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param PHP_VALUE "upload_max_filesize = 100M \n post_max_size=100M";
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param HTTP_PROXY "";
        fastcgi_intercept_errors off;
        fastcgi_buffer_size 16k;
        fastcgi_buffers 4 16k;
        fastcgi_connect_timeout 300;
        fastcgi_send_timeout 300;
        fastcgi_read_timeout 300;
    }

    location ~ /\.ht {
        deny all;
    }
}

# configuration file /etc/nginx/fastcgi_params:

fastcgi_param  QUERY_STRING       $query_string;
fastcgi_param  REQUEST_METHOD     $request_method;
fastcgi_param  CONTENT_TYPE       $content_type;
fastcgi_param  CONTENT_LENGTH     $content_length;

fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
fastcgi_param  REQUEST_URI        $request_uri;
fastcgi_param  DOCUMENT_URI       $document_uri;
fastcgi_param  DOCUMENT_ROOT      $document_root;
fastcgi_param  SERVER_PROTOCOL    $server_protocol;
fastcgi_param  REQUEST_SCHEME     $scheme;
fastcgi_param  HTTPS              $https if_not_empty;

fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx/$nginx_version;

fastcgi_param  REMOTE_ADDR        $remote_addr;
fastcgi_param  REMOTE_PORT        $remote_port;
fastcgi_param  REMOTE_USER        $remote_user;
fastcgi_param  SERVER_ADDR        $server_addr;
fastcgi_param  SERVER_PORT        $server_port;
fastcgi_param  SERVER_NAME        $server_name;

# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param  REDIRECT_STATUS    200;
4

You could a test using --webroot instead:

certbot certonly --webroot -w /var/www/pterodactyl/public \
-d panel.keksssmp.de --dry-run

2 Likes
5

I did that, should i upload the log?

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Account registered.
Simulating a certificate request for panel.keksssmp.de

Certbot failed to authenticate some domains (authenticator: webroot). The Certificate Authority reported these problems:
  Domain: panel.keksssmp.de
  Type:   connection
  Detail: 85.202.163.65: Fetching http://panel.keksssmp.de/.well-known/acme-challenge/NdYMOC6oQq4AR_o_YB6f4FfHrB8FweRzKJkyPyPvREs: Connection reset by peer

Hint: The Certificate Authority failed to download the temporary challenge files created by Certbot. Ensure that the listed domains serve their content from the provided --webroot-path/-w and that files created there can be downloaded from the internet.

Some challenges have failed.
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.
6

Is there a firewall or IPS?

2 Likes
7

i deactivated the firewall completely for that error, using:
ufw disable and i dont know if i have an IPS should i ask my hoster? if i have an IPS?

8

Try that the last command again.

2 Likes
9

Also, let's place a test text file in the expected challenge location:
mkdir /var/www/pterodactyl/public/.well-known
mkdir /var/www/pterodactyl/public/.well-known/acme-challenge
echo "test" > /var/www/pterodactyl/public/.well-known/acme-challenge/Test-1234

Then we can see if that file is being served at:
http://panel.keksssmp.de/.well-known/acme-challenge/Test-1234

1 Like
10

root@vserver-21005:~# mkdir /var/www/pterodactyl/public/.well-known mkdir: cannot create directory ‘/var/www/pterodactyl/public/.well-known’: File exists root@vserver-21005:~# mkdir /var/www/pterodactyl/public/.well-known/acme-challenge mkdir: cannot create directory ‘/var/www/pterodactyl/public/.well-known/acme-challenge’: File exists root@vserver-21005:~# echo "test" > /var/www/pterodactyl/public/.well-known/acme-challenge/Test-1234

i also use Ubuntu 22.04 and i got an reply from my hoster he said: "no - the VMs are delivered with a blank cloud template from the jw. distro vendor and we do no guest OS scanning etcNetwork traffic is only checked inline for DDoS attack patterns"

1 Like
11

This is good:

curl http://panel.keksssmp.de/.well-known/acme-challenge/Test-1234
test
1 Like
13

Let's have a look at the certbot log file.

1 Like
14 
root@vserver-21005:~# curl http://panel.keksssmp.de/.well-known/acme-challenge/Test-1234
test
test
15

Heres the log file

letsencrypt.log: https://pastebin.com/raw/uLLriJDn

16

Do you have any kind of firewall before your nginx server?

Because I get the same "reset by peer" from my own test server but then a good response if I just try again right away.

The Let's Encrypt auth servers often are different IP addresses so would look to your server like new ones each time.

curl -i http://panel.keksssmp.de
curl: (56) Recv failure: Connection reset by peer

# Immediately after
curl -i http://panel.keksssmp.de
HTTP/1.1 200 OK
Server: nginx/1.18.0 (Ubuntu)
2 Likes
17

Is there anything that is doing Geo-location blocking?
Also, ask the HSP: "Does that DDoS system work with Let's Encrypt?"

1 Like
18

Yeah there is a firewall before my V-Server, but i also disabled it

19
1 Like
20

You can turn that back on - it's not causing this problem.

2 Likes
21

The Hoster said: "There is no layer7 protection, so nothing is filtered at HTTP"