centos – Creation of a DNS with BIND: no server could be reached

I would like to set up a DNS server with Bind on CentOS 7. I followed a tutorial, on my server everything seems to work.

CentOS test

However, when I try to use my DNS server with a client, it doesn't work. My server has IP and my client: Here are the tests I did:

Debian test

Here is the configuration of my DNS:

Named configuration

Config db

Domain Name System – How Can I Make My DNS BIND Server Public?

I have a BIND server running a virtual machine with a bridged network. I have allowed it to pass through the firewall with: sudo firewall-cmd --zone=public --add-port=53/udp and added a port forwarding configuration to my router: https://i.imgur.com/TLzbTMn.png https://i.imgur.com/kHhjkdx.png I am using CentOS 8. My main objective is as the DNS server accessible from outside the network and if you were on another DNS server like Google's public DNS. Here are my configuration files:


// named.conf
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only name server (as a localhost DNS resolver only).
// See /usr/share/doc/bind*/sample/ for example named configuration files.

options {
        listen-on port 53 {;; };
//      listen-on-v6 port 53 { ::1; };
        forwarders {;; };
        directory       "/var/named";
        dump-file       "/var/named/data/cache_dump.db";
        statistics-file "/var/named/data/named_stats.txt";
        memstatistics-file "/var/named/data/named_mem_stats.txt";
        allow-query     { localhost; };
        recursion yes;

        dnssec-enable yes;
        dnssec-validation yes;
        dnssec-lookaside auto;

        /* Path to ISC DLV key */
        bindkeys-file "/etc/named.iscdlv.key";

        managed-keys-directory "/var/named/dynamic";
logging {
        channel default_debug {
                file "data/named.run";
                severity dynamic;
zone "." IN {
        type hint;
        file "named.ca";

zone "jpac14.io" IN {
        type master;
        file "jpac14.io.zone";

include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";

Zone Config: jpac14.io.zone:

@   IN SOA  epc.jpac14.io.   root.epc.jpac14.io. (
                                       2020032001      ; serial
                                       1D              ; refresh
                                       1H              ; retry
                                       1W              ; expire
                                       3H )            ; minimum

$ORIGIN         jpac14.io.
jpac14.io.              IN      NS      epc.jpac14.io.
epc                     IN      A
beastpanel              IN      A

SSL certificate – Apache2 does not start: (98) Address already used: AH00072: make_sock: unable to bind to address

there is already something related to this port, that's why apache is complaining.

Try this to find out what uses port 80 / TCP:

# ss --listening --tcp --numeric --processes

you should get a list of open listening sockets with the combination of local address: port and the process that opened each of them. Find out which one has opened port 80, stop this process and restart apache, it should work.

dnd 5th – Can an Eldritch knight bind to a natural weapon?

Let's say a multi-class wizard / Eldritch Knight launches Alter Self and acquires claws like natural weapons, could he then create a weapon link with his claws?

Relevant rules:

MIXED AND ROWED ATTACKS The most common actions that a monster
take in combat are melee and ranged attacks. These can be spelled
attacks or attacks with a weapon where "weapon" could be a manufactured item
or a natural weapon like a claw or a tail point. (MM p10)

Weapon Bond At the 3rd level, you learn a ritual that creates magic
link between you and a weapon … If it's on the same plane of
existence, you can summon this weapon as a bonus,
making it instantly teleport to your hand. (PHB p75)

DNS Manager v2.13.0 with support for BIND 9 and WHMCS V7.9 is out! | NewProxyLists

1. Let's start broadcasting today's news Version 2.13.0 of our DNS manager for WHMCS. This update is of great importance as it brings an overwhelming amount of improvements on board this flagship module. Read on for a short trip through some of them:

  • Support for BIND 9 submodule.
  • Full compatibility with the most recent WHMCS V7.9.
  • DNSSEC validation can now be established on Cloudflare servers to provide an additional layer of security and reliability in your DNS infrastructure.
  • The newly implemented "Full Registration Name" option gives you the power to decide whether or not the domain address should appear next to the DNS registration name.
  • Finally, you will also have the power to select the DNS zones that you want to prevent from being edited by your customers in the customer area.

Still can't find the particular feature you were looking for? So don't wait to get a full view of all the new utilities that our DNS manager for WHMCS 2.13.0 gifts – visit the module change log immediately!

Learn all about the DNS manager for WHMCS 2.13.0!

2. WHMCS V7.9 modules support list

We are halfway there! Over the past week, several additional modules have joined the ranks of the WHMCS V7.9 Supporters – below you will find the most recent additions:

Don't forget to regularly monitor progress!

Need custom software development for your business?

Especially for you, we will adapt an application and its design to your own needs, create a new module or even a whole new system built from scratch!

Bind VNC on the SSH hop host tunnel to something other than the localhost port

I know how to use a jumphost to create a VNC SSH tunnel ssh -A -N -L 5901:targethost:5901 jumphost however, this binds to the local host of the initiating machine. So if I want to connect to many hosts at the same time via something like Royal TS, it becomes a problem when you get more than 10 machines. Let's say I want to establish a VNC connection to via the jumphost my.jumphost.com. The order would be ssh -A -N -L 5901: my.jumphost.com

I wish I could link this connection in one way or another to the target IP address, so when I went to start the VNC session, the address would be vnc:// instead of vnc://localhost:5901 In this way, I could save all VNC connections in Royal TS.

BIND PTR does not show up in MXtoolbox

I have a problem with my PTR records which does not work when I configure my DNS on Google DNS for example or when I check them with MXtoolbox,
sorry i had to cover the client's ip address enter the description of the image here

and when i use my dns it works enter the description of the image here

server – why is nginx trying to bind to an ip address i don't tell, and how can i stop it?

I am trying to host two separate websites from my VPS. I have two services running on different ports. What I'm trying to accomplish is redirecting nginx to service A if the user types in a given URL, but redirecting to service B if the user type in a different URL. Both URLs are A records to the same IP address, which points to my VPS.
I have a basic configuration file for Nginx which I think should work; however, when i run nginx, i get the following error message:

nginx: (emerg) bind() to (2606:4700:30::681f:5cfa):443 failed (99: Cannot assign requiested address)

I find this very strange, because not only do I not recognize this IP address (and it is not present anywhere in my / etc directory, according to a quick grep -R), but this server did not even activate IPv6. No IPv6 rule is specified in my nginx configuration file.

Why could this happen? And how can I prevent it from happening? At the moment, I cannot run any service from this machine as this error causes nginx to close. nginx -t reports that my syntax is correct, then ends with the same error as before.

Here is my nginx.conf. I have no other configuration files for nginx.

# For more information on configuration, see:
#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

events {
    worker_connections 1024;

http {
    log_format  main  '$remote_addr - $remote_user ($time_local) "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 2048;

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

    # Load modular configuration files from the /etc/nginx/conf.d directory.
    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.
    include /etc/nginx/conf.d/*.conf;

    server {
        listen      blog.ericlondr.es:443 ssl http2 default_server;
        server_name blog.ericlondr.es;
        location / {
            proxy_pass  http://localhost:2368;
    ssl_certificate     "/root/web/key.cert";
    ssl_certificate_key "/root/web/key";
    ssl_protocols       TLSv1.2;
    ssl_ciphers     HIGH:!aNULL:!MD5;

    server {
        listen       api.ericlondr.es:443 ssl http2 default_server;
        server_name  api.ericlondr.es;
    ssl_certificate     "/root/web/key.cert";
    ssl_certificate_key "/root/web/key";
    ssl_protocols       TLSv1.2;
    ssl_ciphers     HIGH:!aNULL:!MD5;

        location ~ (/favorites|/zoop) {
            proxy_pass http://localhost:7878;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection 'upgrade';
            proxy_set_header Host $host;
            proxy_cache_bypass $http_upgrade;

# Settings for a TLS enabled server.
#    server {
#        listen       443 ssl http2 default_server;
#        listen       (::):443 ssl http2 default_server;
#        server_name  _;
#        root         /usr/share/nginx/html;
#        ssl_certificate "/etc/pki/nginx/server.crt";
#        ssl_certificate_key "/etc/pki/nginx/private/server.key";
#        ssl_session_cache shared:SSL:1m;
#        ssl_session_timeout  10m;
#        ssl_ciphers HIGH:!aNULL:!MD5;
#        ssl_prefer_server_ciphers on;
#        # Load configuration files for the default server block.
#        include /etc/nginx/default.d/*.conf;
#        location / {
#        }
#        error_page 404 /404.html;
#            location = /40x.html {
#        }
#        error_page 500 502 503 504 /50x.html;
#            location = /50x.html {
#        }
#    }


angular – How to get ngx-mat-select-search to bind to an array and have an output emitter during selection changes?

I am using ngx-mat-select-search for a multi-selection drop-down list with search.

I am trying to make it a component that:

  1. A list of values ​​to display is given as @Input ()
  2. The selected values ​​are linked to an array so that the parent component can have access to the current selections.
  3. Has an @Output () emitter that tells the parent component that an option has been checked / unchecked. Then the parent can do anything with the values ​​linked in 2.

Here is what I have so far: https://github-omyu1h.stackblitz.io

Please just explain when / why I need to use bind ()

When would i do

instead of ?

The React documentation mentions that bind () resolves this problematic inequality:
obj.method(); = / = var method = obj.method; method();. How would the second call to the method be different from the first? Wouldn't he have access to instance variables, etc. of the instance of the object from which it is called? Also, what exactly are the arguments in bind () - namely, is this.FunctionName.bind(this) link to FunctionName?