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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.

0
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1answer
22 views

RDP on IPV6 using DS-Lite-Tunnel [on hold]

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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0answers
45 views

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. ...
5
votes
1answer
274 views

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 ...
3
votes
1answer
22 views

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 ...
3
votes
2answers
61 views

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 ...
0
votes
1answer
393 views

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 ...
0
votes
1answer
41 views

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 ...
2
votes
1answer
649 views

Port-forwarding rule on Cisco ASA not working - “Drop-reason: (acl-drop) Flow is denied by configured rule”

New to Cisco, so I hope this question isn't too noobish. I am trying to setup a port-forwarding rule to allow "any" SSL traffic in from "Outside" to the web server on my LAN. The problem is apparently ...
1
vote
1answer
150 views

Configuring static NAT on Cisco Router

I am trying to configure port forwarding on a Cisco 891F router given by an ISP and directly connected to servers in the 192.168.170.0/24 network. The ISP recommended using the ip nat inside source ...
0
votes
1answer
45 views

Port forwarding using Putty [closed]

I have a server (running ubuntu) where I am running BRAT(http://brat.nlplab.org), which creates a standalone server at http://127.0.0.1:8001. Now I want to access this in my local machine (Windows 10)....
1
vote
2answers
71 views

Can ISP know whether port forwarding is been done? [closed]

I sit behind a NAT of an institute, which has a rule that implies that no port forwarding can be done. I am developing a peer to peer application, which I need to test. So I have to be sure that it ...
1
vote
0answers
69 views

SSH into device attached to another router [closed]

I saw this questionwhich looks kind of related, but I'm not sure as the answers are too confusing. Basically, I want to SSH into my Raspberry Pi from my laptop. Eventually I want to have the Pi ...
0
votes
2answers
79 views

Simplest explanation of ports, sockets, processes [closed]

Can anyone explain the simplest definition of what ports, sockets and processes are and what is the relationship between all 3. Thanks in advance.
5
votes
1answer
468 views

Switch FIB and router FIB

Forwarding Information Base (FIB) also called Forwarding Table or Mac Table according to wikipedia. I first explain my understanding of the FIB in both Switch and Router. Does not hesitate to correct ...
-1
votes
1answer
53 views

SSH and port forwardings in both directions [closed]

I can't undersatand this : All communication happens using SSH with port forwardings in both directions Any help? Thanks.
1
vote
1answer
77 views

What requirements must general firewall/routing software meet, to make OSI 2 port mirroring work correctly?

The basics are obvious, but there are technical points of networking implication which I don't understand. Some of these are general to networking, others general to all routing/firewall softwares ...
1
vote
1answer
130 views

Help understanding “tunneling”

Tunneling = allows a network user to access or provide a network service that the underlying network does not support or provide directly (wikipedia) How does the "network service" not support a ...
1
vote
1answer
249 views

Cisco Router, Port Forwarding, ACL ordering

I'm new CCNA learner here. If I have the following access list: access-list 101 permit ip 10.10.0.0 0.0.255.255 any access-list 101 deny tcp host 10.10.0.1 eq 443 any access-list 101 deny tcp host ...
2
votes
1answer
3k views

How to setup port forwarding on Cisco Router running Version 15.2(4)M6

I'm trying to get traffic forwarded from my network's public IP to a private IP within the network to allow access to a server from outside the LAN. I can't quite figure out how to do it unfortunately....
3
votes
2answers
2k views

Cisco ASA Port Forward using a custom RDP Port

I am having trouble setting up RDP access from outside the network using a custom port. I would like for port 5000 to be translated externally to 3389 internally. I have set it up with the commands ...
2
votes
1answer
527 views

ASA 5505 OS 9.0 Port Forwarding

I've been beating my head against this for a while now and I've tried all links I could find that were even the least bit relevant to my situation. Any and all information is greatly appreciated. ...
0
votes
2answers
235 views

port forwarding in router [closed]

I have the following configuration: Tp link router : WAN Interface--- 5.6.7.8 LAN Interface---192.168.0.1 Planet router : WAN Interface---192.168.0.10 LAN Interface-...
1
vote
2answers
411 views

Hosting multiple web servers or web applications on a private network

If a web site is hosted on a public network it can directly be accessed using it IP. If it is hosted on a private network it can still be accesses if the NAT device conducts a port forwarding of some ...