0
votes
1answer
62 views

Can access server using both LAN & WAN IP from LAN, but no access outside of LAN

I have a server running ArchLinux at home called SERVER. Currently, I can gain access to this machine via SSH by issuing ssh user@SERVER from another computer that is connected on the same LAN. It ...
1
vote
2answers
68 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 ...
2
votes
0answers
50 views

SSH port forwarding to a host that needs to contact a third named host to access MySQL

We customize and support standard web applications that our customers host on managed servers from different web hosters. Usually, the application consists of a web application in PHP and a database ...
1
vote
1answer
507 views

Assign ipv6 address to KVM guests on bridge mode

System: CentOS 6.5 Network: Bridge on br0 IPv6: ISP Native /64 block. IPv4: ISP address (not internal LAN) Purpose: To assign IPv6 only to guests (manually), I don't want ipv4 address to be ...
0
votes
0answers
73 views

How to set mark on packet when forwarding it in nat prerouting table with rp filter 0?

I have a serious problem with my server ubuntu 13. I have two ADSL lines and an internal network as follows. i.imgur.com/v4ddHXf.png (URL IMG) IP redirections made ​​two because there are two older ...
0
votes
0answers
18 views

Forward irc:// through IIS

In our network, all connections from outside must go through IIS. Only port 443 is open from outside. On the server with IIS I have installed Application Request Routing (ARR) and used it to ...
0
votes
0answers
55 views

How to redirect http traffic from one linux server to another server using rinetd?

I want to test my proxy service on another linux server box listening to port 9090/9091. I need to forward all of my http/https traffic from one of my linux machine to the proxy service. I have tried ...
1
vote
1answer
38 views

Proper postgres port forwarding on linux/ubuntu inside AWS VPC

At Amazon AWS we have VPC, where one node has public IP and others - private. Instance with public IP is something like balancer. On every node we have Ubuntu LTS. One of the private nodes is ...
0
votes
1answer
1k views

Problems with port forwarding on a Arris TG862

I am having a heck of a time getting port forwarding setup on an Arris TG862. I am trying to forward port 80 to a machine on my network but I am having exactly zero luck. Here is my setup: The Arris ...
2
votes
1answer
704 views

How to set mark on packet when forwarding it in nat prerouting table?

I have a few port forward rules like this iptables -t nat -A PREROUTING -p tcp --dport 46000 -j DNAT --to-destination 172.16.8.2:46000 iptables -A FORWARD -p tcp -d 172.16.8.2 --dport 46000 -j ACCEPT ...
-1
votes
1answer
136 views

re-route requests on filtered smtp port 25 [closed]

My VPN filters port 25 (to prevent spam) but my ISP doesn't. The VPN takes over all traffic and changes the default gateway? How can I bypass the VPN to send mail? I want all outgoing traffic except ...
1
vote
1answer
303 views

Can you configure SNAT with multiple source IP's and use static DNAT (port forwarding)?

We have a private LAN connected to a firewall with multiple public IP's to use for SNAT in order not to overload the ports on a single IP. However, we have a requirement to allow certain workstations ...
0
votes
1answer
212 views

redirect traffic from 2 Ubuntu external NICs to specific internal hosts

I am having problems redirecting incoming traffic to 2 external facing interfaces on my Ubuntu 12.10 server to 2 separate internal hosts. I am able to redirect incoming traffic on my eth0 just fine to ...
-1
votes
1answer
126 views

How to check for GRE Tunnels [closed]

Is there a way to check for GRE Tunnels? I've heard spammers will use GRE tunnels to send mail from a central machine out of another and would like to check for possible GRE tunnels.
0
votes
1answer
261 views

Forwarding SNMP ports over SSH

I access my work network through a VPN and have access to every host in there through SSH. Currently I need to access around 3000 hosts via SNMP, but corporate sec policies restrict SNMP access ...
0
votes
2answers
235 views

Re-routing incoming network traffic from sub-domain to specific port on Windows 2008

I'll do my best to explain this. I've got a Windows 2008 server with TWO local intranet-sites running on it. The first website will open if you just type in the name of the IP address - ...
0
votes
1answer
361 views

Port forward (NAT) based on domain/URL

I currently have my Time Capsule to forward all inbound requests on port 80 to my Mac Mini which runs a web server with its local ip address of 192.168.1.8. I also have DNS set up so that if I go to ...
1
vote
1answer
146 views

Port forwarding on Ubuntu - what are the minimum and maximum port numbers to use?

I'm using rinetd on Ubuntu as a port forwarding server. I'm running this on EC2. I need to know which ports are available for me to use for port forwarding. I know that the privileged ports are 0 - ...
0
votes
1answer
497 views

Troubleshoot port forwarding. Could it be ISP blocking incoming connections?

Had a new Axis IP camera delivered yesterday. Plugged into Cisco E2400 Wireless Router but having problems. Example topology: WAN IP: 82.10.10.10 (example) Cisco Router: 192.168.1.1 Axis ...
1
vote
0answers
99 views

Changing externally visible IP on a multi-IP router?

I work at a public library and I'm trying to configure OCLC's EzProxy software. I've run into a problem and I think it's related to our network config. I'm punching above my weight here a little so ...
0
votes
1answer
256 views

What's the best way to forward traffic on a specific port to another machine?

The setup I have is this: [client01] <-A-> [server01] <-B-> [server02] client01 can access port 9300 on server01 (connection A). server01 can only access port 9300 on server02 ...
0
votes
1answer
390 views

Port forwarding not working despite DMZ and bridged modem

So I'm trying to set up SSH access to a friend's server, and we've learned from his ISP (SureWest) that their modem is bridged. Next, the router (Linksys E2000) was set up for port forwarding. No ...
1
vote
2answers
288 views

Mac Mini as a server in small network

I'm thinking about setting a small network and having a Mac Mini as the server. I'll need to make it accessible remotely, used to share files locally and remotely. There's need to backup everything up ...
-1
votes
1answer
220 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
1answer
844 views

My CentOS 5.7 server can't access the internet

I have a CentOS 5.7 server setup in my office. I have recently moved to a new router (Linksys E3200) and I don't seem to be able to access the web at all through it (git, yum etc.). All the other ...
1
vote
3answers
242 views

Accessing LAN IP address from outside

I have an SCM server connected to my office LAN which runs the SCM tools like git, svn, etc. The office router has been configured with 'Port Forwarding' so that the SCM server can be accessed through ...
0
votes
1answer
269 views

Can't access a URL with custom port from inside the LAN, but can from outside

I need to access a page in my dev server via internet. Since my ISP provides me a dynamic IP, I set this POC scenario: I'm using NO-IP to translate the url to the actual IP. I set a SERVA64 portable ...
0
votes
3answers
184 views

Forward (all 80) to Debian server then have Debian delegate where?

I have a router that forwards all port 80 to a Debian web server, but I want to add another server to that bunch. How could I get debian to say forward anyone trying to access git.domain.com to ...
2
votes
3answers
663 views

Port 80 and 443 won't forward?

I live in Australia, and my ISP is Bigpond (ADSL2) with a "Thomson TG782T" Router, and my port 80 and 443 won't forward. I have set up an Apache server before years ago (I was in a different ...
0
votes
2answers
68 views

opening a port on a router to all WAN ip's or just a range or specific WAN IP

Just trying to see how many people would be in favor for opening a port on a router, like port 22 or something similar for ssh, to all outside WAN connections or just a set of specific WAN ip's for ...
1
vote
0answers
410 views

VisualSVN Port Forwarding is Not Resolving

I am using the FreeDNS Update client to dynamically update the IP address of a subdomain. I can access https://localhost:8282/svn/ on the laptop but I cannot access it from ...
0
votes
1answer
134 views

Port forwarding from Router 1 to router 2 not working?

I have 2 routers. router 1 IP : 192.168.4.1 router 2 IP : 192.168.5.1 I can easily forward port 8080 from router 1 to router 2 which routes it to a Tomcat server (port 8080 also). I accesss this ...
0
votes
3answers
924 views

cant access my local web server with the external IP [closed]

I havent been able to find a solution to my particular problem. I have a MAC which I set up as a web server and configured my router to forward to the local IP. When trying to access my site from ...
1
vote
3answers
8k views

How to access internal server using public ip supplied by isp?

i am really new to network as i dont major in it. but i have been assigned this task and i cant get much of a reference form my colleagues as they also didnt handle this previously. let me describe ...
0
votes
0answers
71 views

Recomended software for a complex portforwarding infrastructure

First of all, I'll describe a model of a networking infrastructure which I'll use as an example to explain what I'm looking for. It's very simple: /-------> [PC2: ...
0
votes
3answers
274 views

Port forwarding stopped working (apart from to one server)

I'm pretty stumped with this, I've been messing around with it for hours with no joy - I know it'll be something stupid I've missed. At our old office we have a Netgear DG834PN router which has ...
2
votes
2answers
17k 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 ...
3
votes
3answers
3k views

Dynamic port forwarding based on hostname or originating ip

I'm a programmer trying to figure out some stuff beyond my domain: Say I have one machine and clients will make tcp (but not http!) connections to it. I want to redirect clients to their own ports ...
3
votes
5answers
2k views

Open ports broken from internal network [duplicate]

Quick summary: Forwarded port works from the outside world, but from the internal network using the external IP the connection is refused. This is a simplified situation to make the explanation ...
0
votes
3answers
1k views

Cant ping ip on LAN. Port forward works fine though

I have a Solaris 11 machine running inside the LAN. It is a default install. I can access the machine and ping it if I ssh into my router (if it matters, it is running dd-wrt). I cannot ping the ...
1
vote
2answers
806 views

How to make Sharepoint website running in VMware virtual machine accessible from host?

I have a Sharepoint website that runs on IIS inside VMware Workstation guest system. The host is Windows 7, whereas guest is Windows Server 2003. What I basically need is just to be able to browse ...
0
votes
3answers
2k views

Issue forwarding port through Cisco 881 router

I am ultimately trying to set up a PPTP VPN server inside my firewall, but to verify that the router will be configured correctly first, I am trying to pass SSH through the Cisco 881 to the SSH server ...
3
votes
1answer
220 views

Port forwarding with 2 routers

I have a simple 2 router setup. I'm using the second router as a switch and for wireless. The first router is forwarding a few ports (80, 443, 1433) on to a computer with a reserved I.P. address ...
0
votes
1answer
708 views

Network structure --> Server 2k8r2 <--> Livebox <--> Router <--> Other PCs [closed]

I have a Livebox connection to the Internet and I have set up my network as follows: - Livebox <--> Win2k8R2 Server - Livebox <--> Netgear N150 Router - Router <--> Other PCs ...
2
votes
4answers
2k views

How to configure traffic from a specific IP hardcoded to an IP to forward to another IP:PORT using iptables?

Unfortunately we have a client who has hardcoded a device to point at a specific IP and port. We'd like to redirect traffic from their IP to our load balancer which will send the HTTP POSTs to a pool ...
1
vote
1answer
4k views

Port forwarding with multiple IP's

I work at a company which uses a Fortigate 60 router, something I'm not really familiar with. Everything worked fine with it until a week ago when Comcast came in and replaced our modem. It seemed as ...
0
votes
1answer
385 views

Simple options for port forwarding to a different port?

I have three network printers at our local office, all of which listen on port 9100. Non of them offer the option of changing the listening port. We have a single public static IP address, and access ...
1
vote
7answers
9k views

Redirecting port 80 to another port on a single Windows computer? [closed]

Assuming my Windows (xp, vista, 2003, 2008, or windows 7) computer is connected directly to the internet and has no router in between... Is there a way to filter all traffic going TO port 80, so that ...
0
votes
4answers
6k views

How can I set up port forwarding for SQL Server 2005?

Subject :how to use port forwarding Internet------> Router in my network ------->LocalMachine (Windows 2003) -->Sqlserver2005 How can I access SQL Server through the internet via a router ...
9
votes
6answers
3k views

Loopback to forwarded Public IP address from local network - Hairpin NAT

This is a Canonical Question about Hairpin NAT (Loopback NAT). The generic form of this question is: We have a network with clients, a server, and a NAT Router. There is port forwarding on the ...