Questions tagged [forwarding]

Redirect a port to another one, used to access a computer from behind a firewall.

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Enable IPv6 IP forwarding on Windows by default

I'm running Wireguard on a Windows server, connected to multiple peers. Peer A <-> Server <-> Peer B In order to allow peers to ping each other (Peer A wants to reach Peer B), IP routing/...
Adrian's user avatar
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Forward traffic on port to another host with transparent proxy

I have a host with ip $HOST_IP which runs an HTTP server on port 8080. There is a transparent proxy server running on port 9000 on host with IP $PROXY_SERVICE_IP. I'm trying to forward traffic from ...
Dávid Molnár's user avatar
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may a linux client do prerouting with iptables

In our network I have 3 clients: A, B and C (connected to the same router). I tried to redirect the traffic that arrive to B on port 4440 to C on port 4441 using iptables-legacy simulating port ...
Bog Alt's user avatar
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1 answer
874 views

How to access https://localhost from other devices

I have a server program written on ASP.NET that I would like to access from other devices on the same network. What do I need to do in order to achieve this? Is there a program that handles this type ...
Mark Nguyen's user avatar
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Cannot block autoresponses coming in to Postfix

I have an Ubuntu server with Postfix. I only use postfix for outgoing mail, there are no local mail boxes on this server at all. In /etc/aliases I setup forwarders to my gmail address. /etc/aliases ...
Zoltan's user avatar
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How 2 dynamic (external) IP devices can talk to each other via 1 static (external) IP [closed]

I have 3 devices: Device 1 (Dynamic IP): A raspberry Pi sending UDP packets to Device 2 via 4G modem via Internet Device 2 (Static IP): My Ubuntu/Windows PC with static IP, successfully receives ...
Văn Hóa Vũ Nguyễn's user avatar
1 vote
2 answers
427 views

Double VPN not working

I have setup OpenVpn in my raspberry pi and it works correctly, I can log in to my raspberry pi from my cellphone. I also installed a paid VPN (Windscribe) to my raspberry pi too. The problem comes ...
tseres's user avatar
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Preserving source IP behind double-NAT network

I have a network scenario where double NAT-forwarding is happening. Public Firewall and Internal Firewall are doing NAT forwarding. I have only control of the Internal Firewall. Client: X.X.X.X Public ...
tirogza's user avatar
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1 answer
641 views

Forwarding UDP traffic from one host to another

I have two hosts, each with 2 network interfaces: host1: eth0:172.16.125.5 eth1:172.165.8.55 host2: eth0:172.16.125.6 eth1:172.165.8.56 I want to forward all UDP traffic to host1:eth1 port 1234 to ...
BillA's user avatar
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redirecting udp traffic from one network interface to another on the same host

My host has two network interfaces: eth0:172.16.125.5 eth1:172.165.8.55 I want to redirect all UDP traffic to eth1 port 1234 to eth0 port 1234, ie: 172.165.8.55:1234 -> 172.16.125.5:1234 After ...
BillA's user avatar
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1 answer
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How can I forward email based on the send-from address?

So I have a unique situation. I work for an MSP and we host a Unix server in our environment for a customer that sends SMTP to our internal mail server. The problem is on this unix server, there are ...
Jakob's user avatar
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1 answer
644 views

Router is not forwarding packets

So I have the following setup: (Net-1: 64.236.5.112/30) (Net-2: 64.236.5.12/30) 64.236.5.113/30 64.236.5.114/30 64.236.5.13/30 64.236.5.14/30 Router1 <-----...
HappyHippo's user avatar
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209 views

Unable to port-forward with firewall

I am trying to create a simple gateway with ubuntu that performs the functions of nat, firewall, and forwarding. With the firewall disabled I can connect to a web server located in a subnet that I ...
Tiziano Pedrazzoli's user avatar
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1 answer
1k views

Is it possible to reveal URLs in a masked, server-side 301 redirect?

I work for a search monitoring company and I'm currently investigating some advertisements which are hiding malicious URLs in masked, server-side redirects. When users click these ads, they're ...
Display name's user avatar
1 vote
1 answer
617 views

Forwarding request made to my server to another server on the same path

I need to create a sub-directory mapping in the Apache server such that each request made to the path /another-path gets forwarded to https://some-website/another-path. How could I do this? If the ...
Amanda's user avatar
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1 answer
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Forward incoming UDP Packets on Windows Server to client on different interface

I have the following setup with 2 networks and 3 clients: Network A: 192.168.0.0/16 Network B: 172.16.0.0/12 Client 1 is connected to Network A (192.168.0.1) Client 2 (Windows Server) is connected ...
ShadowEagle's user avatar
1 vote
0 answers
493 views

Iptables Forward All traffic to different interface except local inter-lan

I have Two LAN Local LAN: 172.30.30.0/24 with gw 172.30.30.254 Remote LAN : 192.168.2.0/24 with gw 192.168.2.1 both lan can communicate and ping each other devices. i have introduce new machine 172.30....
Robert's user avatar
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1 vote
0 answers
457 views

KVM DNS forwarding not working / reply: REFUSED

I've set up a couple of VMs for development purposes for a project. The setup includes a local CA for the past, current and future project VMs. On the guest if can do dig staging.testing.lan and get ...
Chocobo's user avatar
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1 answer
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Full network forwarder with linux

I want to use a linux machine as a full network forwader. Target "physical" architecture : machineA is connected to network1 with its own addressing plan machineB is connected to network2 ...
djezzz's user avatar
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1 answer
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How to forward http request to application running on port 80 with NGINX

The Ubuntu server is running, Glassfish on port 80(http) & 443(https) Nginx on port 8080(http) & 8081(https) The goal is, www.hostname01.com to access Glassfish, www.hostname02.com to access ...
KJunya's user avatar
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-1 votes
1 answer
283 views

mail can be send and received from outside network but mail (outlook or webamil ) not accessible from local network

my private block is 192.168.109.0/24 WAN is 82.198.x.x. and mail server is on 192.168.109.x. I have made the rules dst-nat for port 25,587,993 and 143 with destination 82.198.x.x forwarded to the mail ...
Riad Hossain Bhuiyan's user avatar
-1 votes
3 answers
2k views

Forward packet from loopback interface based on routing table

I have a problem in which I need to process some packets and send out to more than one interface/network. My solution is to send the packet to a loopback/dummy interface and based on the Linux routing ...
Shihab Pullissery's user avatar
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0 answers
680 views

Forward multicast and broadcast packets over subnets

I am trying to receive packets from the local network, including specifically broadcast and multicast on device B, which is connected to the local network though device A which is acting as a router ...
APIUM's user avatar
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0 votes
1 answer
757 views

Forward incoming connection to another server, but forward the connection IP address as well

I have two Linux servers. I need to forward the incoming connection from server A (1.1.1.1:25565) to server B (2.2.2.2:25598) (as an example). I've tried multiple iptables rules, with partial success. ...
OpenSource's user avatar
0 votes
1 answer
1k views

Redirection thru redsocks connecting but not responding

Am using redsocks to redirect thru a proxy. The problem is that when i use a tool like wget it appears to be connecting but not resolving. What could be the problem and how could i solve it? Executing ...
jogarcia's user avatar
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0 answers
51 views

How to use iptables to link two vlans

I have two networks, one being the main, with a network card eth1 (found on an Ubuntu Server 18.04 configured to be a router) and internal IP address 192.168.5.1 (with is the gateway) and another ...
Twambo Kalumba's user avatar
1 vote
1 answer
318 views

Exchange admin center forward and prepend body

I want to forward all incoming E-mails to my HubSpot CRM System. To achieve this I want to configure my Exchange Server to forward them. Exchange Server seems to provide only a redirect rule and no ...
Simon Ludwig's user avatar
1 vote
0 answers
394 views

Troubleshooting low TCP transfer rate behind a router

I’m trying to debug a low tcp transfer rate on a host (“lowHost”). As a reference, i’m comparing it against a second host (“highHost”). I’m making two rate measurements: Downloading a big file using ...
Tomer's user avatar
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3 votes
1 answer
725 views

FreeBSD jail routing issue

I have the following setup with FreeBSD jails and VNET which is supposed to grow into a DNS core net lab setup. The jailhost and the jails are running FreeBSD 12.1. The jails are connected by epair ...
boisjacques's user avatar
1 vote
2 answers
879 views

How can I forward / redirect http to a public IP with nginx?

I have a domain example.com with DNS A record pointing to a public ip x.x.x.x. I need to get all http and https requets from that server and forward that traffic to another public ip y.y.y.y. Any ...
Rodrigo Ortiz's user avatar
0 votes
0 answers
1k views

bridge isn't forwarding non local traffic

I'm experiencing the following issue, i have two virtual machines connected and vlan tagged traffic is passed lets say from A to B. The traffic passed from A to B is tagged and I need to strip the ...
Natalia's user avatar
0 votes
1 answer
67 views

SSH forwarding from my laptop to a VM located on a remote server

I have a remote server that hosts a VM that is running a web service on port 8000. I want to be able to access the web service from a web browser on my laptop knowing that: From my laptop, I can ...
Karim Manaouil's user avatar
0 votes
0 answers
102 views

VPN Server Port forwarding

I got a VPN client 192.168.0.9 which is connected via a my home VPN server 192.168.0.12. (Most of my LAN clients are connected via 192.168.0.12 to use VPN). I'd like to port forward from WAN via my ...
stinkefisch's user avatar
0 votes
0 answers
364 views

A way to forward all incoming mails to another adresss in Posfix/Zimbra

I'm looking for a way to forward all incoming mails to an external mail using postfix/zimbra, i tried "always bcc" but it forwards all mails including outgoing mails, but i'm looking for only incoming ...
logax's user avatar
  • 139
0 votes
1 answer
2k views

Port redirect for all interfaces with nft (nftables)

I have a relatively simple requirement that I want to solve with nft (nftables). It is to redirect all incoming packets from port 445 to port 1445. This should be done for all network interfaces. My ...
Ben's user avatar
  • 101
0 votes
2 answers
366 views

How can I rward Mails with Postfix and Dovecot to a specific Mailbox?

I can’t figure out how to forward mail withhPostfix and Dovecot to a specific Mailbox. Sender Mail Address --> Mailbox of Receiver At moment the mails are transfered into the INBOX of specific Users....
bananajoe's user avatar
-1 votes
2 answers
2k views

VPN via middle/jump server

Here's the rough picture of what I'm trying to do: client -> |VPN| -> server A -> |VPN| -> server B -> Internet. Server A and Server B are both on public internet with public IPs, also ...
allen's user avatar
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1 vote
1 answer
1k views

How to forward packets not destined for linux host to container

I am trying to do some traffic inspection on a lxc container in my host machine. My host machine is connected to a mirror port and being sent duplicate copies of the traffic of 4-5 other machines on ...
m00sef00t's user avatar
4 votes
1 answer
3k views

Forward VPN traffic to another server

I have 2 servers: server A: Public IP --> 104.x.x.x server B: Public IP --> 188.x.x.x server A has 2 VPN servers: Openvpn --> tun0 Wireguard --> wg0 tun0: flags=4305<UP,POINTOPOINT,...
user3289412's user avatar
0 votes
1 answer
309 views

Check forwarding queue occupation on router

I have a router forwarding traffic from a network to another and I need to know when the packet queue (in the receiving side/interface - rx) occupation is close to its maximum capacity. However, ...
imll's user avatar
  • 123
0 votes
1 answer
3k views

Mikrotik CAPsMAN Client to Client forwarding not working

I am trying to set Mikrotik CAPsMAN to allow wifi users communicate between each other On CAPs server I have allowed "Local forwarding" and "Client to Client forwarding", pushed configuration but ...
Aleš's user avatar
  • 105
0 votes
1 answer
2k views

Bridge filtering for man-in-the-middle network node

I am inserting my network node between 2 legacy devices that exchange tcp and udp messages using dedicated ports, in both directions. My new node needs to push some tcp/udp messages through ...
markm's user avatar
  • 1
2 votes
1 answer
5k views

Port Forward - KVM host forward port 23 to port 22 of a guest running an ssh service

I have a KVM server (host) with multiple virtual machines (guests). My goal is my host forward port 23 to port 22 of a guest running an ssh service. Command example... ssh root@[HOST_IP] -p 23 ...
Eduardo Lucio's user avatar
0 votes
1 answer
1k views

LocalForwarding on a SSH connection from my desktop client to a CHROOTED user in an LXD container

I currently have a proxified web host setup for local development, yet I'm trying to make it a proper (documented) setup so I can deploy it on practically any VPS hosting. Currently everything else ...
Elias's user avatar
  • 1
1 vote
1 answer
515 views

How to setup SSH tunnel proxy server?

I've encountered multiple applications that don't support SSH tunneling, and that has become an issue when working off-site from our servers. I have a Raspberry Pi sitting here which is never turned ...
Typewar's user avatar
  • 167
0 votes
2 answers
1k views

How to create SSH tunnels

is it possible to achieve the following scenarios by using the SSH tunnels? My workstation --> jump server --> app server --> final resource (port 443) My workstation --> app server --> final ...
Mikael H.'s user avatar
0 votes
0 answers
166 views

Forwarding ports of a mobile hotspot to local server

I will start with thanking you for your kind answer. We are currently doing a project entitled "IoT based surveillance system". We are using Raspberry Pi 3B to stream the video feed on a local port, ...
Shanur Rahman's user avatar
0 votes
1 answer
460 views

How can I allow ssh tunneling/forwarding trough a machine without giving access to the intermediate machine [duplicate]

Lets say i have a machine with a few virtual machines on them, how would i forward ssh connections to those virtual machines without giving access to the host machine? Is it possible to do so with ...
Frederik Baetens's user avatar
0 votes
4 answers
488 views

Linux routing - hop server on same subnet

Im trying to get a very simple setup to work, I have 2 AWS ec2 instances (blue), instance B has a Ipsec VPN into our datacenter and can ping internal IPs of this datacenter, ie server C (192.168.40....
perfecto25's user avatar
2 votes
1 answer
600 views

Allow specific OpenVPN clients to access other clients

I have multiple OpenVPN servers which have clients like slave-1 and slave-2 which have access only to the OpenVPN server itself. I have a dedicated CA server for creating new users to the system. I ...
user1937459's user avatar

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