1
vote
2answers
85 views

Give internal access to external client

I am newbie in the networking issues. I got a question for which I don’t know how to solve. I have my internal network that has a fixed IP (only accessed by VPN) and I have a server where I put some ...
1
vote
1answer
90 views

Automatically ask router for port redirection on ubuntu

Is there a way to use uPnp or something to automatically ask a router/firewall to redirect data coming from outside to a machine running ubuntu? Here's the deal, I'm supposed to prepare a certain ...
0
votes
2answers
126 views

Stunnel multiple ports through the same Port

I'm looking for some help regarding an stunnel configuration I'm working on. Basically I want to have a DMZ machine accept inbound connections to port 80 and 110, and then forward them through my ...
0
votes
2answers
88 views

How to spoof an IP for application that needs this particular IP?

In general, such a problem, there is a system RHEL 6.4 Server with a pair of network interfaces combined into one by bonding. This system IP address: 10.7.7.1. Next on the system running an ...
-1
votes
1answer
48 views

How to proxy to a web server on a node that can make outgoing connections but has no accessible IP, without root?

Not sure if this is the right StackExchange site to ask (I mainly frequent SO), but since you guys are server admin experts hopefully you'll find it relevant! Some context: I'm currently trying to ...
0
votes
1answer
929 views

iptables forward rule not working in openwrt

I am trying to apply some iptables forwarding rules in openwrt. Here is my scenario - My server has two cards ath0 and br-lan. br-lan is connected to internet and ath0 to private network. The other ...
2
votes
0answers
339 views

How can configure Cisco ASA 5510 to allow access to Web server in DMZ from LAN with port translation?

I am trying to configure Cisco ASA 5510 firewall to allow access from LAN to DMZ web server. Web server is located in the DMZ and is using port 8080. I don't want users to type port number every time ...
0
votes
1answer
1k views

How to set up port forwarding on a NETGEAR ProSafe™ Gigabit 8 Port VPN Firewall FVS318N?

UPDATE: Rule might be right, but app still isn't functional. See more details after the screenshots. I want to forward port 3000 to a machine in the local network (192.168.1.106). So far I've ...
0
votes
0answers
42 views

Is there a way to diagnose *where* comms to a port on a windows machine is being blocked?

I am developing a system that comprises an email server. I have so far been unable to connect on port 25 (using telnet), despite having checked the following are set up correctly. Connections to port ...
1
vote
0answers
428 views

Puppet agent (v3.0.1) hangs connecting to master (v3.1.1) in VM behind firewall (with NAT based access)

I am using puppet agent v3.0.1 (On FreeBSD), trying to connect to a puppet master v3.1.1 (On Ubuntu) and the puppet agent hangs with the following debug output: puppet agent --debug --no-daemonize ...
0
votes
1answer
434 views

NAT / Port Forwarding with iptables firewall [duplicate]

I've got the following setup: firewall (iptables) eth0 internal interface, 192.168.2.10 ppp0 external interface, public_ip (IP masquerading) server1 (192.168.2.11), service 1 (port 443) server2 ...
3
votes
1answer
61 views

Port Forwarding Between 2 Internet Machines

Here's my scenario: Setup There are 3 machines: A: on the internet : has ip (a.a.a.a), has port pa open B: my server / gateway : has ip (b.b.b.b), has port pb open C: on the internet : has ip ...
-1
votes
1answer
1k views

Remote Desktop working in LAN, but not over WAN

We have a server with Remote Desktop enabled, but we can only access the server from inside the LAN. Port forwarding on port 3389 is set up on the gateway/modem (Comcast SMCD3G) and canyouseeme.org ...
0
votes
2answers
143 views

iptables port forwarding A -> B -> A

I have a host machine(A) with lxc-container(B). A's local ip address is 10.0.3.1 and public ip, let's say 1.2.3.4. B's local ip address is 10.0.3.21. I need 1.2.3.4:7999 to be forwarded to ...
0
votes
3answers
2k views

How to route external TCP port 80 into loopback (127.0.0.1) port 8080?

I have a test VDS box with real IP. If i start web server on physical interface port 80, it can be opened from another computer via it's ip address (and default port 80): python -m SimpleHTTPServer ...
0
votes
3answers
818 views

Using a nat rule to translate 80/443 traffic to web server, but internal users cannot access it using external ip/domain name

I am using Cisco ASDM for ASA I have my internal network called soa. My outside interface is called outside. Let's say my outside IP given to me by my ISP isp is y.y.y.y I have a web server inside ...
0
votes
1answer
729 views

SSH: Port Forwarding, Firewalls, & Plesk [closed]

I edited my SSH configuration to accept connections on Port 213, as it was one of the few ports that my work firewall allows through. I then restarted sshd and everything was going well. I tested ...
1
vote
3answers
1k views

How to open UDP port 7777 from iptables/firewall on Ubuntu 11.04

I need to enable the port 7777 from my VPS which runs Ubuntu 11.04, I have added rules from the iptables which is listed here, Chain INPUT (policy ACCEPT) target prot opt source ...
0
votes
1answer
960 views

SMTP port open - but not open

As some of you might know, I am setting up an exchange server. Now I ran into another problem: I cannot connect to the SMTP service from outside the server! The ports are opened in the gateway ...
-1
votes
1answer
223 views

Win 2008 r2 — client and server are both behind a NAT

I am new to win2008. I have a Win2008 R2 server installed and need to know how to get a client system (Win7), using remote desktop, terminal server, or whatever windows 2008 provides, to connect to ...
2
votes
2answers
634 views

Redirect traffic between two ports with iptables

My goal is to run a webserver on port 3000 and make it available to my network over port 80. The best answer I found so far is this nice one liner. iptables -t nat -A PREROUTING -p tcp --dport 80 -j ...
0
votes
1answer
879 views

Can I use my pfSense WAN IP as public IP for 1:1 NAT? What about port forwarding?

I have a dual pfSense configuration with CARP. Both WAN interfaces are assigned consecutive WAN IP .150, .151. I think it is silly that pfSense would require them both to have these dedicated IP so I ...
1
vote
2answers
108 views

Problems with firewall when forwarding 8080 thru Comtrend5071T

I am trying to forward port 8080 thru my modem but i have not been successful. to be exact my desired route is as follows: Connection to Server A (192.168.0.5) is tested as working ...
0
votes
3answers
8k views

Port 22 is closed even with Firewall turned off [closed]

I'm trying to open port 22 on my local machine (Windows 7 32 bit). I'm using a web tool to check if my port is open. It says that port 22 is closed. So I disabled firewall to see if it causes port to ...
1
vote
1answer
6k views

FortiGate 60C and Port Forwarding

Without going into too much detail, I'm in over my head due to recent staffing changes and a lot of extra responsibilities falling into my lap that are outside my current area of expertise. So any ...
0
votes
1answer
600 views

Forward non HTTP traffic on port 80

I'm creating an Android application that uses MQTT protocol to send real time messages, however the local firewall is strict and blocks most ports so the android app can not connect. (Server is ...
2
votes
1answer
138 views

Using a dynamic dns securely

I'm bit of a newcomer when it comes to networking, firewalls and port forwarding - please bear with me: I've just setup a dynamic DNS that points to my external IP and are handled through my Cisco ...
0
votes
3answers
353 views

Network Firewall forwarding one port to two different internal ip's based on url requested

I have multiple websites running inside my network on 2 different machines, I need to give access to every website from the outside via a firewall router, and they need to stay on port 80. (so a ...
1
vote
5answers
4k views

How to make ALL ports accessible on CentOS 5.6?

I've set up a CentOS 5.6 development server running as a virtual machine under Virtual PC 2007, in order to have a play with Node.js. Everything is up and running, but I can't seem to access port ...
0
votes
0answers
307 views

Fowarding port in iptables to internal server

I'm running cPanel/WHM with ConfigServer Firewall (csf). I want to forward port 8080 on my webserver to an internal server with an IP of lets say 10.1.1.1 thats running a webserver on port 80. How ...
0
votes
1answer
237 views

iptables masquerading rules for established session

I have the following setup: Box1 [server]: eth0 with ip 192.168.2.18 is in the internal network with webserver running on port 80. Box2 [gateway]: eth0 with ip gw.gw.gw.gw with some port exposed ...
2
votes
3answers
328 views

port forwarding for a single ip - samba share

I have a linux box behind a Linksys firewall router. I have a Windows machine outside the firewall that would like to access Samba sharing on the linux box. The Windows machine has a static ip ...
2
votes
2answers
18k views

How can I check if a particular port is open from one site to another?

I want to know if port 139 TCP is open from a server on one domain to another. How would I do this? I know that I can use Telnet to test port 25 to a server with Exchange installed - but that only ...
0
votes
2answers
2k views

IPtables: DNAT not working

In a CentOS server I have, I want to forward port 8080 to a third-party webserver. So I added this rule: iptables -t nat -A PREROUTING -p tcp --dport 8080 -j DNAT --to-destination ...
8
votes
1answer
10k views

Can I use ufw to setup a port forward?

Im currently using ufw to enforce some basic firewall rules. Is it possible to also use ufw to do port forwarding? Specifically im wanting to forward incoming traffic to my server (same machine ...
0
votes
1answer
375 views

ASA setup for static mapping a large number of hosts to a single machine

I have a setup where I'm routing hundreds to potentially thousands of SSL-enabled websites through a single virtual IP that does SSL offloading and load balancing. Thanks to the design of SSL itself, ...
-1
votes
2answers
2k views

Howto configure openSuSE firewall to route local traffic to local ports

I have openSUSE 11.3 installed. I'm using the openSUSE firewall configuration mechanism (/etc/sysconfig/SuSEfirewall2). I have a http server application running on port 8080. I want the http service ...
21
votes
3answers
15k views

iptables port redirect not working for localhost

I want to redirect all traffic from port 443 to the internal port 8080. I'm using this config for iptables: iptables -t nat -I PREROUTING --source 0/0 --destination 0/0 -p tcp ...
0
votes
1answer
1k views

How can I open a port in linux [UBUNTU] for all ip addresses?

I am trying to forward a remote port from my server to my development machine. I have tried opening the port via iptables, but it is open only for 127.0.0.1. If I login to the server using ssh and ...
0
votes
1answer
234 views

How to connect to Wi-Fi device through another machine available through VPN?

We are developing app for device named iTach WF2IR, but we doesn't actually have that device, we will get one in 4 weeks or so. Meanwhile, we should make demo for that device in a week. So we decided ...
0
votes
1answer
829 views

How do I open firewall ports for Windows file sharing?

This is required for Visual SourceSafe to work. I need to know what ports need to be open to the outside, so Windows file sharing can respond to users in the public internet. Users need to be ...
2
votes
4answers
601 views

How to browse to a webserver which is reachable through the SSH port only

I have a server at work which is behind a firewall (the company's firewall) so it is reachable only thrugh port 22 (SSH). I'm able to connect to the server with putty without problems. Also, that ...
0
votes
2answers
703 views

IIS serving locally, but not remotely

There is a router between the modem and the server. In the admin panel, I use single-port forward Internal Port External Port IP 80 80 to 192.168.1.101 (Web ...
2
votes
4answers
311 views

PortForwarding to IIS in Linux

I am trying to set up port forwarding on a linux box to a IIS webserver on my internal network. The web server sits on Windows 2003 Server. My linux box has: eth0 - Internet connection eth1 - ...
1
vote
2answers
212 views

Apache on nondefault port, need help with iptables

I am setting up apache to listen on port 8000. it's working fine from 127.0.0.1 but the ip address on port 8000 does not work the ip address is my router and i've already forwarded port 8000 to my ...
0
votes
3answers
760 views

Firewall on top of 2 subnets - is that possible?

In short Is it possible to have two seperate networks (seperated by IP addresses and subnet) under one gateway + firewall that is within IP and subnet configuration is on network #1 and still filter ...
1
vote
1answer
15k views

How to configure PFSense firewall with external transparent Squid proxy?

I am using PFSense 2.0 and trying to get transparent proxy to work. As the internal Squid won't work with loadbalancing and dual-wan (and it seems Squid doesn't work at all on the latest build), I ...
0
votes
1answer
1k views

Netscreen-25 : Cannot forward port 443 to an internal server?

A customer is using a NetScreen-25 firewall. By default it has a web interface on port 80 and 443. I've changed the port for the HTTPS web interface to some other number that is not being used and ...
2
votes
3answers
3k views

Need some routing assistance with pfSense

I recently (meaning 4 days ago) set up a pfSense firewall/router box. It works amazingly well. I'm having a few problems though: 1) I can't seem to SSH into the box remotely despite enabling SSH. ...
3
votes
3answers
10k views

Create NAT rule and security policies for port 443/80 on a Cisco ASA 5510

I've been trying to setup NAT and give access to a public IP address to my local network, I just can't get it to work. It's my first time using a Cisco firewall. Thanks for your help!