Questions tagged as ['port-forwarding']

Hello I try to do a port forward in this network

As you can see I have the localhost when I want to execute a curl to localhost:9203, in order to get access to 10.0.0.1:9200.

10.0.0.1:9200 is a server that only is accessible by ssh server, 10.0.0.0.

Currently, I connect by ssh to ssh server and then I execute the curl, but I want to do this from localhost because I cannot install dependencies in ssh  ...

Assuming the following:

||netns2|<-kernel routing-> netnsRoot| <-network routing-> |remote server| 

netns2

• is a network namespace
• has a client that connects to the UDP server on UDP/5060

netnsRoot

• is the root network namespace (IE: typical linux routing)
• has a client that connects to the UDP server on UDP/5060
• Has ip_forward enabled and has a Masquerade rule for netns2

Server

• Onl ...

TL;DR: How can I get the client ip connecting to a remotely hosted VPS to be the IP that gets forwarded/natted, via iptables, to a game server running at my house?

I have a Rust game server that I am hosting at my house. I want that to be public, however I don't necessarily want to give out my IP address to everyone. So I am renting a small VPS that intend to use basically as a reverse proxy. I am c ...

here is my issue.

OS : Oracle Linux 7.8 Management IP(Putty accessible) eth0: 10.250.0.210 App IP (not accessible outside) eth1: 10.250.4.210

I have a website running on 10.250.4.210:80.

I need to access this site via 10.250.0.210 IP for testing purposes. How can i accomplish this.

Thanks in advance. UJ

I have 2 kubernetes clusters in the IBM cloud, one has 2 Nodes, the other one 4.

The one that has 4 Nodes is working properly but at the other one I had to temporarily remove the worker nodes due to monetary reasons (shouldn't be payed while being idle).

When I reactivated the two nodes, everything seemed to start up fine and as long as I don't try to interact with Pods it still looks fine on the su ...

i have openvpn server on vps and i have ubuntu client in my home in vps i can ping all local ip on my home ubuntu client ip is 10.8.0.10 and local network is 192.168.88.0 now i want to access local ip over vps ip like i have in home media server on 192.168.88.102:5111 i want to access it on vps ip with any port i chose like (8.9.8.121:5111) how can i do it ? i hope my question is clear

port 1194
pr ...

I want to port-forward to a server through bastion host. The way I connect to bastion is why my ssh key after I login to the company network. The connection from the bastion to the server, I want to port-forward, is using a different ssh key (same username). How can I correctly port forward through a bastion to a server. I tried the -J (proxy jump) option but it is not working. I have only access to the ...

I have trouble setting up ssh clone for gitea. I use port 2222:22 for the docker, and port forwarding is set up on my router. I could ssh git@localhost -p 2222, but could not ssh git@<public_ip> -p 2222 with error Connection timed out

I have checked the port forwarding work by launching a http server by python3 -m http.server 2222 and open http://<public_ip>:2222 and it works.

I am running ...

I am in the process of deploying and configuring an on-premise exchange 2016 server. My inbound/receive connector is not working. When I telnet into my server on port 25 from a computer on an external network, I get:

220 Row3Exch.Slowservers.com Microsoft ESMTP MAIL Service ready at Mon, 25 Oct 2021 16:57:57 -0400

However, I am unable to receive emails. I ran the inbound connectivity analyzer to see i ...

I signed up with a new ISP and they dont provide me with a external IPv4 address. Ive set up a virtual server (S) (that has an address) to relay all my stuff to my box at home (B) using a wireguard tunnel.

On (S) I configured:

sysctl -w net.ipv4.ip_forward=1
firewall-cmd --zone=external --add-forward-port=port=<EXTERNAL PORT>:proto=<PROTOCOL>:toport=<INTERNAL PORT>:toaddr=<INTERNA ...

In pfSense, I have this rule: https://i.imgur.com/10jE1Gs.png Where 192.168.1.203 is my target machine and I have a rancher app hosted at port 8081. If I hit https://MY_DOMAIN_NAME:8081--MY_DOMAIN_NAME resolves to MY_WAN_IP, I get connection timeout. In firewall states, I see:

192.168.1.101:59167 -> 192.168.1.203:8081 (MY_WAN_IP:8081) CLOSED:SYN_SENT 192.168.1.101:59167 -> 192.168.1.203:8 ...

I'm planning make two websites in same machine. Which first website running on port 8433 and second website running on port 9433

Im using ubuntu 20.04 Assume i have two domains, let's say foo.me and bar.me Both domain is pointed to same public IP and different SSL.

consider there's an incoming request to port 80 or 443

if HTTP header contain foo.me then the request will forward to port 8433

if HTTP ...

I need help with some deeper networking stuff. Hopefully somebody can help me or at least push me to the right direction.

At the moment I have a two node bare metal (VPS) kubernetes cluster setup with microk8s. Testingwith website deployments work great, routing based on ingress :-)

But now I want do deploy other services that are accessable by ports. I don't want to use NodePort, as the used ports  ...

I have a server hosted by hetzner with a single public ip address which runs proxmox and some VMs. This ip address is configured inside /etc/interfaces like this:

auto enp35s0
iface enp35s0 inet static
    address {{my-public-ip}}/{{subnet}}
    gateway {{hetzner-gateway}}
    up route add -net {{hetzner-ip}} netmask 255.255.255.192 gw {{hetzner-gateway}} dev enp35s0

This configuration was done by het ...

I have a microk8s cluster on a Centos8 host. The host uses iptables-legacy and firewalld. I have troubles getting the cluster to talk with the internet, and recently found that these two tools are standing in my way. For iptables I can do $ sudo iptables -P FORWARD ACCEPT' on my host, but for the firewalld the only solution right now is to disable it, which is less than ideal. I want to configure the fire ...

I am trying to open port 2222 for an open-ssh server on my linux machine.

I am able to log into it just fine from my local IP address.

sudo systemctl status returns:

     Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
     Active: active (running) since Sun 2021-10-10 19:25:19 PDT; 34min ago
       Docs: man:sshd(8)
             man:sshd_config(5)
    Process: 9445 E ...

I want to redirect the incoming traffic to my server, in which iptables is working, to another server in LAN. However, I only want this to work if the incoming traffic is coming from a specific external IP address. Otherwise, the traffic should be dropped.

Let me put an example to clarify it:

• External client IP: 88.88.88.88
• Server IP (in same LAN): 172.26.0.99
• Destination IP (in same LAN): 172.2 ...

I want to access a ssh Server via a NAT. SSH Server Lan: 192.168.69.2:22 connected on interface wg0 (wireguard) local IP on interface wg0: 192.168.69.1 public IP is directly connected to eth0.

my current configuration:

sysctl -w net/ipv4/ip_forward=1
/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
/sbin/iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 2024 -j DNAT --to-destination 192.1 ...

I need to set up port forwarding from my local Windows machine Port 3307 to a remote MySQL server port 3306 but accessed via 2 Linux proxy servers and a Linux web server.

I need to use Putty or plink.exe on the Windows machine to set up the connnection.

See diagram

I've found examples using Putty GUI or plink CLI to achieve similar with only 1 proxy server but not with multiple hops.

I can achieve th ...

My system is composed by a NGINX configured as load balancer waiting for UDP datagrams.

The client open an UDP socket, assigning a random source port, and sends a request, waiting for a response.

Say request datagram source/destination is configured as SOURCE_IP,RANDOM_SOURCE_PORT -> NGINX_IP, NGINX_PORT.

NGINX routes the datagram to one of the node but, by design, in order to implement HA, the other s ...

I have a VPN server set up on a vigor 2865. I now want to allow one external ip address, or anyone connected to this vpn, access to a website on an internal server. This website uses a public dns name to resolve to my public ip address. e.g. mysite.mycompany.com

If I port forward 80/443 to the internal server then anyone can access the site. This works fine.

If I add a firewall rule to only allow ac ...

A few days ago I installed Azure DevOps Server 2020.1 on my server which is running WS2019 os. My problem is that after creating port forwarding rule on portmap.io and connecting to the link that portmap has generated in the rules, Azure is returning blank page - just a white screen. Interestingly, when I tried connecting to the website, Azure showed me login alert and after providing credentials it has ...

I am running a localhost service on my VPS.

When i start the service, this is what i get:

Navigate to https://127.0.0.1:7443 in a browser

The problem with this is that i can't open it in my browser because it's a VPS.

I have tried running ngrok, but it says connection to localhost failed.

Is there a way i can forward it to the IP address of the same VPS the localhost is running? For example i open th ...

I have an ASA connected to the primary network and I'd like it to do an easy port forward so that when a pc tries to telnet the ASA on port 500, for example, the ASA forward the request to a server. The topology would be like: 192.168.1.100 (PC) -> 192.168.1.200 (ASA) -> 192.168.1.300 (SERVER)

So from my PC if I do "telnet 192.168.1.200 500" the request would actually go to 192.168.1.300

I cre ...

I'm running a server on Ubuntu 21.04 using 4 ethernet ports, I'm working with 2 internet boxes and I'm using Speedify to bond these two connexions (eno1 and eno2) to prevent streaming faults and improve bandwidth (we're a school and streaming several courses online at the same time).

Here is a simple scheme of my server :

eno1 :  ====|
            |===>  bonded connection using Speedify
eno2 :  ...

The Question

How do you port forward a privileged sub-1024 port to a non-privileged 1024+ port with firewalld?

The Reason

Why we are doing this? We want to be able to switch the non-privileged 1050 port on the gateway and use a different upstream mail server. For example, to test a different spam solution, use port 1051 to send mail to a different mail server with a different spam filtering solutio ...

I have two servers that I can access one of them via wireguard. I have a service that listen on 4559 port on the second server. how can I port forward to second server via iptables.

[laptop]                         [server1]                 [server2]
10.10.0.1 (wireguard) -------> 10.10.0.2:4559 --------> 192.168.1.20:4559

How do I forward all traffic arriving at a given port to another port?

Define the layout and the problem

The layout

Here is the layout of what I am trying to do...

+--------+         +---------------------+         +----------------+
|  WAN   |  <--->  | 6789                |         |                |
| Client |         |       Gateway       |         |      Host      |
|        |         |       ...

I am having an issue getting ports to forward to the VM's via MASQUERADE iptable rules. I had this working on the same servers with Proxmox. But now with XCP-NG I cannot get this to work. I did once in the past on one of these servers. But I have not been able to replicate it again. Network connection for outbound and getting updates and http/https request on the VM's is working just fine. I just cant g ...

Cisco router is reachable from the internet, external ports are being forwarded to different inside hosts. From external connection on port 1234, it is being forwarded to a internal host 10.0.0.1 running an app on port 443. This whole can be reached from the internet via mydomain.com:1234.

What I need: Be able to reach this host from the inside on port 1234, preferably on the internal IP of the hos ...