Questions tagged [port-forwarding]
For questions about port forwarding on an on topic network device. For instance, you have a firewall and need to forward a port to an internal server, but you do not know how.
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Advice needed. Connecting to a web server on a private network; STUN/TURN, WebRTC or something else?
The problem:
The company I work for offers a hardware solution that is managed from a web interface that runs on a local network on a dedicated machine that we built.
Because of low-level constraints, ...
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ASA cannot get traffic to pass port forward
I'm not able to get port forwarding to work for some reason on my asa 5555-x.
I have tried the below config:
!
object network SERVER
host 192.168.1.20
!
object service SERVICE_TCP_9982
service tcp ...
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1
answer
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Cannot connect to AWS MySQL database after router change
I recently changed internet providers, which involved changing my router. Since the switch, I have been unable to connect directly to a (previously working) AWS MySQL database, which I am doing ...
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does port 8080 need port_forwarding?
is port 8080 open (auto forwarded) in all devices? i used it without PortForwarding and UDP packets transferred successfully!
i expected the NAT to block this but public ip address worked simply!
i ...
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Pfsense NAT with site-to-site VPN
For a client I am building a network solution that enables them expanding their available online presence.
I am running into a problem with port forwarding to an IP which is routed over an OpenVPN L3 ...
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how do I fight/ protect and gather evidence if my router was copy Mac and my Mac was ported? [closed]
I learned recently that my devices including router had it's Mac address copied multiple times. I believe I'm going through a network hacking that uses the Mac addresses to drown my network services. ...
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How to reset port forwarding without a factory reset on a mikrotik router [closed]
I was working on a network, that goes something like this: tp-link router -> mikrotik router -> splitter for computers. And it has wifi from both routers. I accidentally forwarded ports(the 80 ...
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2
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Best way to configure for port forwarding
I am using a Peplink Balance 30 router. Right now I have only one public IP. I have set up the LAN for 192.168.8.1. I have five devices on the LAN side, including two Ubiquiti Rockets and three IP ...
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Access to systems with the same IP address but various port number in another network?
I have some knowledge of networking but not much, so I appreciate knowing from the experts.
modified part
I have 10 devices(PLCs) with the same IP address "192.168.42.2" that I want to ...
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How can a port be both be used to identify a private IP, and also to connect to a specific service?
Sorry if im asking something nonsensical, im still trying to wrap my head around these terms.
Heres my understanding
NAT is the process of translating a private IP to a public IP, lets make an exaple ...
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How can a router port forward and read the destination port if it's a L3 device
My understanding of port forwarding is that on the router, you configure a setting that allows you to forward all packets from external traffic with a specific destination port towards a device within ...
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1
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Port forwarding on Cisco ASA 5506X using ADSM
What my goal is when enter the public ip address with the specific port number, it will able to show the interface of the PBX.
So when i configure by referring other video and articles and only change ...
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1
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How to change the source port without interrupt the TCP connection? [closed]
I use TCP socket to connect a client(source) and a server(destination), the connection has been established. Now the project need to change the source port without interrupt the connection. Both ...
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How do I port forward multiple SSH servers? [closed]
I am very new to networking and I have set up ssh on my raspberry pi. I also have ssh on my windows 10 computer. Here is my problem: I would like to have ssh port forwarding on both my raspberry pi ...
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Does Port Forwarding limit ports available to NAPT?
I'm wondering if routers limit the possible ports available to NAPT when port forwarding is configured. For example, given one public IP address all but two ports assigned via port forwarding, would ...
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Can a router port forward based on a request header? (noob question) [closed]
I'm searching for a router that supports port forwarding based on the request header.
e.g.
www.domain1.com should forward to port 80 on IP 168.0.1.10
www.domain2.com should forward to port 80 on IP ...
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How can someone connect to my computer even through port forwarding?
If I set port forwarding up on my router to redirect connections on port, say, 50000 to my computer, how can someone connect to my router in the first place ?
Does that mean that my router has a ...
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2
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How can I use scapy to make a port appear open-device behind NAT?
This has been asked in stack overflow like 7 years back. I don't see the correct answer there. Is there any way to do this?
While this packet keeps on being transmitting, doesn't the other end see the ...
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1
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46
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Hosting a website using dynamic public IP: What if the ISP did not assign any port forwarding? [closed]
Let's just say that I am a peasant that can only avail of a typical Dynamic Public IP address from my ISP.
Just for the sake of example, let's say have the following:
Domain Name: experiment626....
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WAN ip address looks like private ip, but whatsmyip shows a public ip address [closed]
Let me preface this by saying that I'm not very good with internet networking, but I tried my best to gather information. So I've been meaning to do some port forwarding to open a server, but I got ...
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Cisco 887 Conditional Port Forwarding
I have port forwarding configured on a CISCO 887 for client VPN like this:
"ip nat inside source static udp 10.65.1.1 500 interface Loopback1 500"
It forwards them to a VPN server.
However, ...
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125
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What IP addresses are appropriate for a network inside an embedded device? [closed]
I am making an embedded device with two processors, a "gateway" processor which is connected to external ethernet, and a "webServer" processor, which is only connected to the ...
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Port Forwarding using specific VLAN on CIsco RV134W
I would like to forward internet traffic on a specific port to VLAN30 on our network for our security cameras. I have a Cisco RV134W VDSL gateway connected to a D-LINK DGS-1210-28 switch.
The port on ...
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Difference between "Destination NAT" and "Port Forwarding"
As far as I can tell "Destination NAT (with PAT)" and "Port Forwarding" are different terms for the same thing, or are there any technical differences?
Note: I added PAT because ...
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Are computer ports part of the network level of part of the operating system level? [duplicate]
I know that computer systems can communicate one with the other via ports, say from port 80 of computer system X to port 80 of computer system Y.
Are computer ports part of the network (hardware) ...
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Can port mirroring be used to convert single video stream to multiple video streams?
I am new in networking and had a basic query regarding port-mirroring.
A video stream is taken from camera-based software system and is being fed to a distribution system. For high availability (...
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1
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95
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Easiest setup to replace jumpbox forwarding [closed]
In order to connect to some of machines, what I currently do is:
Connect to VPN (using AnyConnect)
SSH to my jumpbox via VPN
For every single machine that I want to access using ssh, I have to map ...
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3
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Difference between Reverse Proxy and Port Forwarding
Well both reverse proxy and port forwarding looks for any incoming packets destined to a particular machine which is present in local network. How both of them are different ?
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Cisco Port forward ip nat inside source static ... Invalid
This is almost the same question as How to setup port forwarding on Cisco Router running Version 15.2(4)M6. The problem is that the command used in the answer is not available:
ip nat inside source ...
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How do programs ensure the port they are listening to is not already in use? [closed]
I'm just curious about this, but I know there is a range of ports that programs can use, but I'm curious how do they know that the port they are listening to isn't already in use by another program? ...
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816
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Why is the IPv6 address I'm getting from whatismyipaddress.com wrong? [duplicate]
So I've portforwarded my machine using the graphical interface provided by my router. This interface also gives me a public IPv6 which I can use to communicate with my machine through the internet. ...
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73
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Public IP address does not work in internal network [closed]
I have configured port forwarding to my system from the router configuration menu, when I try to access the public IP address in the internal network it does not respond but it is accessible outside ...
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How to forward port 80 and 443 on pfSense to a (internal) nginx webserver?
Yesterday we did a "big bang" firewall switch in our company. Our new firewall is a pfSense server.
Lets say our external ip is 84.1.1.1, pfSense is 192.168.1.1 and our web server ip is 192.168.1.2.
...
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When port-forwarding, will a port only be listed as OPEN if the service host is actually reachable?
I'm fiddling around in my lab today and attempting to learn more about port-forwarding. I've noticed that when I set up port-forwarding for a given port and run a port scan from outside the network, ...
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Static port forward 1194 to VPN server behind Cisco router
I'm trying to setup a VPN server behind a Cisco router which is my main internet gateway. I've set it up as shown in the attached picture. The problem I'm observing is that zero packets with a ...
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2
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Why doesn't NAT drop packets with spoofed public source IP?
As I read on Section 4.3.8 of this page https://www.manrs.org/isps/guide/antispoofing/,
The following code:
ip nat inside source list INSIDE pool OUTSIDE overload
will translate packets with a ...
1
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1
answer
197
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Port Forwarding on Cisco ASA 5510
I have an EDI server behind a Cisco ASA 5510 version 8.2(1). Currently our EDI server sends over documents to our trading partners and they will look for our URL in this format http://1.1.1.1:1000. ...
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Port forward no destination [closed]
Context: I'm running a home game server and my paranoid network administrator has allowed port forwarding under the sole condition that I airgap the server hardware when I'm not actively using it. Our ...
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2
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370
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Why can some people use public ip address to access a server from an internal network with the client device within the internal network [duplicate]
As the title suggests. I find it mind breaking to think how network architecture can differ to allow/not allow using public IP address to access a server within internal network from within the ...
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How can I configure a Cisco router 4300 to allow internal server ip:80 to be accessed on public ip:4500
I have an internal web server on port 80. I need help commands maybe to configure port forwarding to access the server on my private network from a public IP
Current running config
interface ...
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1
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108
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Problem Forwarding Port 22 for SSH [closed]
I'm trying to forward port 22 so I can SSH into my PC from a different network but it doesn't seem to be working. I can do ssh mihkel@my_public_ip from the network that the PC is on but it doesn't ...
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If you're behind a firewall and all the ports are blocked, how is your browser able to access the internet? [closed]
I'm behind a router and I'm able to run game servers on my home computer after forwarding ports or using the DMZ feature on the router. However, I still don't understand the underlying technology as ...
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How to connect multiple devices with identical static IP into a wireless network
I've been searching StackExchange and the Internet for a while looking for a solution for my networking question. Some articles I found are here, here and here, but these don't need to deal with a ...
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963
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RDP on IPV6 using DS-Lite-Tunnel [closed]
I am trying to access one of my PCs from and external network using RDP on port 3389.
After realizing my ISP uses DS-Lite-Tunnel I gave up ipv4 and focusing on ipv6.
So far the only way I managed ...
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393
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Simultaneous dynamic and static NAT not working
Cisco 4200 series running IOS XE with a single public IP address and dynamic NAT, which works just fine. I am trying to add Static NAT to access a server (map external port XX to internal port YY. ...
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Cannot get port-forward working on ASA 5505: "Drop-reason: (acl-drop) Flow is denied by configured rule"
Months ago I made this post here on NE, but I still for the life of me just cannot figure our port-forwarding on my ASA 5505. I have since started over and am now trying the DMZ port instead, but ...
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In port forwarding, is the ultimate destination decided solely by the intermediary entity?
In port forwarding, is the ultimate destination to connect to solely decided by the intermediary entity which provides port forwarding, not by an application client?
Although the page mentions dynamic ...
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Why isn't web traffic blocked by router?
(A naive/stupid question which I couldn't find answer to on the web.)
Why is the internet traffic reaching me even if I haven't set up port forwarding. (For example, I can view websites). What I ...
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2k
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Port Forward for OpenVPN Server behind two routers [closed]
I am stuck how to establish port forwarding between the Internet and an OpenVPN server behind two routers. I need the first router as an Internet DSL modem and VoIP phone access (both services from ...
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Reach IP in Parent Network [closed]
We have a router (Router 2) inside a network (Router 1) with a client (Client in Router 2) that needs to make a TCP connection to a client in router 1. We only have access to configure Router 2 and ...
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