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1answer
86 views

iptables forwarding gmail and google only

I am trying to forward only gmail for the internal using forward drop policy network with no success. This machine is working as a router/firewall for internal network. I am unable to browse to google ...
1
vote
1answer
31 views

How would I implement forwarding of a website that's in a subfolder?

User has been given a subfolder to hold their website at http://www.example.com/user. If possible, I'd like to forward that off to userdomain.com, as that's a different server and I have control over ...
0
votes
1answer
306 views

how to forward all traffic on specific interface to ip address

I have one Linux machine that have 2 interfaces. The first one is used as a default one and provides access to internet, the second interface was added as a dedicated link to send packets from tcpgen ...
0
votes
1answer
855 views

Port forwarding through OpenVPN server

Here's my scenario: Remote OpenVPN server v2.3.2, 1 public IP, CentOS 6.4, 2.6.32-042stab079.6 Tunnelblick (OpenVPN client) What I want to do is route all the client traffic through the VPN - and ...
0
votes
0answers
209 views

How to forward UDP and TCP traffic from one IP to another

I have a server with two LAN cards installed. I have one server in U.S and one in India. I have created a GRE tunnel to route all traffic from the U.S Server to my Indian Server. My traffic has ...
-1
votes
1answer
405 views

Can't connect my server outside my wireless network. server is openERP running on ubuntu 12.04 desktop router is ciso small business router

I've looked on the internet regarding port forwarding. I've successfully fowarded port 8069 to my server's ip address. I can access openERP when I'm connected to the network of my office but not when ...
0
votes
0answers
250 views

How can I redirect/forward all the UDP/TCP traffic on one interface to another interface in OpenWrt

I am new to networking and I have a measurement device (D) that periodically sends all its readings over few UDP multicast sockets (with different multicast IP addresses and different port numbers). ...
0
votes
1answer
51 views

Can I forward (not relay) an email message via Postfix?

I have a Postfix email server, and I have a bunch of relays set up so that email sent to user@mydomain.com goes to user@preferredemail.com. With relaying set up, the FROM address doesn't change, so ...
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votes
2answers
125 views

Forward the Wan IP to another Wan IP without changing the source address

I have tried this case by using the NAT function in iptables but fail example. PC A IP is 1.1.1.1 (Win7) My Server IP is 2.2.2.2 (CentOS 6.2) target Server B is 3.3.3.3 (Windows server 2003) Flow: ...
0
votes
2answers
219 views

root domain to www forwarding issue

I want to forward my root domain(yourdomain.com) to www.yourdomain.com Should I delete the A record of the root domain and then setup 301 permanent forwarding to www.yourdomain.com? I am hosting my ...
0
votes
0answers
307 views

2-way SSL with apache forward proxy

I'm working to set up Apache as a forward proxy with a client that uses 2-way SSL. The basic flow is myApplication --via http--> Apache proxy --via 2 way SSL--> client. After setting everything up, ...
1
vote
2answers
427 views

Restrict apache backend access to nginx reverse-proxy only?

I have nginx setup as a reverse-proxy for a group of apache (LAMP) backends listening on port 8080. I've also configured each backend servers' mod_rpaf.conf file to include the proxy IP of the nginx ...
1
vote
2answers
122 views

Two servers, one is a Postfix relay of the other, can I divert root emails from the other?

So, I have two servers, I will call then Internal and External. When I send emails within Internal postfix, it gets relayed by External which does the job of actually sending the email. Normal relay, ...
-1
votes
2answers
219 views

Forwarding the endpoint (at localhost) of an SSH -L tunnel to another machine

Even after long searching and trying I'm not able to solve the following puzzle: Client A --------------------------> Server B (172.26.15.15/24) ssh -L 4321:localhost:4321 Server C ...
0
votes
1answer
1k views

Can't access my external ip address outside of my LAN, apache server on OS X [closed]

For fun I've been working with a web server on my OS X(10.8.4). Apache and its httpd.conf(/etc/apache2/) file and username.conf(/etc/apache2/users/) files all seem to be fine, I can access my ...
0
votes
0answers
69 views

Own relay server using VPN

I have following setup: Server (NATed) connected via VPN to public relay server. There are many of these servers and all have an own VPN connection to the relay server. A client (mobile, NATed) sends ...
0
votes
1answer
100 views

Using Linux's netfilter to reflect packets

I've got a pair of hosts with very bad routing between the two, but I have a third host that has very good ping to each. To work around the bad routing, I'm setting up the third host to bounce packets ...
0
votes
1answer
32 views

forwarding of small and large packets: any difference?

When it comes to simple forwarding of packets (no errors being generated), are packets processed faster by routers when they are small as opposed to when they contain a large payload? Or do routers ...
-2
votes
1answer
802 views

Postfix forwarding is not working

I used this tutorial for forwarding email to another email address on a test mail server and Gmail but it did not work. ...
0
votes
1answer
438 views

How do I configure routing from host system to virtual machine?

I have an Ubuntu host system that is running a MAC-VLAN virtual interface on top of eth0 interface, ipv4 routing is enabled. Also, this system has a Docker (LXC) container running: docker0 Link ...
-1
votes
2answers
291 views

Use Domain in iptables PREROUTING

I have a www.example.com with X.X.Y.Y ip i want to forward traffic from port 80 to the domain(www.example.com), I used the following iptable: iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT ...
0
votes
2answers
298 views

Ubuntu-Server router - forwarding/routing does not work

This is more or less a pretty general question about forwarding and routing with ubuntu server or any linux system, i guess. The server manages a school network and has 8 NICs - each on a different ...
0
votes
2answers
1k views

OSPF routers (with BIRD on debian) recognize each other as neighbors but can't ping each other

I've created a "line" topology using virtual box - creating 4 machines and making a separate link between each using internal networks - R1 (eth0, 10.0.1.1) <-> (eth0, 10.0.2.1) R2 (eth2, 10.0.2.2) ...
2
votes
3answers
227 views

Force local TCP packets over network segment for capture

I have two machines, A and B, running RHEL Linux. Each machine has a 1Gig network card connected to what I call the "LAN" network. Each machine has a 10Gig network card that is connected to what I ...
0
votes
1answer
108 views

Redirecting port A -> B and blocking externally B

I want to redirect port A to port B and EXTERNALLY block port B. A = 9922 B = 22 (Yes, it's ssh, and NO I cannot change it in configuration.) I have three interfaces: lo (loopback) p36p1 ...
0
votes
1answer
64 views

Postfix email alias forwarding

Currently I have installed, and configured postfix. If I send a email to let's say 'admin@XYZ.com' I receive the email(s) locally on the server. I would like to get these said emails to 'XYZ' to ...
-1
votes
1answer
93 views

Are SMTP headers retained when an email is forwarded or replied to? [duplicate]

Let's say an email is sent from party A to B. Let's refer to the set of headers that B views as Headers 1. Party B then replies to or forwards the email to party C. Let's refer to the set of ...
1
vote
3answers
530 views

Linux routing - Access external IP from LAN

I'm using OpenWRT (linux based) on my router. The router has a local IP and a public IP. I have a dyndns name assigned to the public IP. The router is forwarding several ports (e.g. ssh and https) to ...
0
votes
1answer
622 views

Query upstream authoritative DNS for unknown host

I've got an internal bind server which works fine for my local name resolution. Most of the hosts are mapped with internal IPs instead of their corresponding external IPs. However, there are ...
1
vote
2answers
181 views

SSH Key Forwarding fails as soon as I am root

Situation I add a ssh-key to the chain using ssh-add -K the_path as user@local I set up key forwarding as described here https://help.github.com/articles/using-ssh-agent-forwarding ...
2
votes
0answers
383 views

What is a valid destination log for Windows event forwarding

I'm running into an issue when trying to use a custom log journal for storing forwarded events (via subscription) on a Windows 2008 R2 server, the custom log being described as not being a "valid ...
1
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0answers
54 views

BIND: forward 1st level zone

First of all: sorry for the language, English is not my primary language. I have star-like DNS structure with many filials (more that 2): ^ ...
0
votes
1answer
493 views

Setting up a bind forwarder, except for a domain

I'm trying to setup a local bind DNS server (first time dealing with DNS servers, know a bit about records) that: Routes *.internal, *.*.internal to itself (preferably any combination of ...
2
votes
1answer
94 views

allowing forwarding on a root server, security risk?

Having a root server without iptables rules (I know this is not good, it's just temporary tho in my case), and having configuration like this (for VPN reason): echo 1 > ...
0
votes
2answers
149 views

iodine and bind on same server

I have recently setup a server running ubuntu server 12.04. I bought a domain, example.com, and have registered nameservers ns1.example.com and ns2.example.com. Both point towards my server running ...
0
votes
1answer
64 views

Two Nics, one direct connection and forwarding

I'm designing a system with a Server PC with two nics running Centos 6 and a Sensor Device which runs a web server. The Sensor Device is connected directly to one of the nics of the Server PC. All ...
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votes
1answer
27 views

After including DNS forwarder, not possibility to send email to the “forwarded domain”

I have a client non trusted domain, let say "domainA.com", I manage it with System Center 2012 installed in my company internal domain (let say domainB.lan). I have added forwarders in my dns to be ...
0
votes
2answers
286 views

Use lighttpd to access a website over a proxy

this is going to be my very first question. At our company we are using Squid as a proxy between our intranet and the internet. Now we have the need that a software package can't handle a proxy ...
2
votes
1answer
1k views

iptables FORWARD port to internal server

I've been struggling with a FORWARD policy that isn't working the way I'd like, and I can't figure out what is causing the session to fail. I hope someone can help. My goal is to forward port 3000 ...
0
votes
1answer
55 views

How to forward emails from a domain to 2 different servers?

I am not sure the title describes my problem properly, so let me explain. I have a domain called example.com. I have currently set it up for email services from Microsoft Live domains. I have done ...
-1
votes
1answer
42 views

Copy Admin on All Emails To/From Specific Outside Email Address [Google Apps (GAM API)]

We use a fax-through-email service and I would like to keep track of our employees' usage of it. We use Google Apps for Business and I have installed/configured GAM API for the more advanced ...
0
votes
1answer
220 views

How can I configure Postfix to ignore relayhost when forwarding mail?

How can I configure Postfix to ignore relayhost when forwarding mail? I currently use the relayhost to send all outgoing email via an external SMTP service : # /etc/postfix/main.cf relayhost = ...
0
votes
1answer
234 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 ...
0
votes
1answer
76 views

Whats wrong with my iptables?

Problem I cannot get requests to my server on port 80 to redirect to my client on port 8080 Server I am using a CentOS 6.3 VM as the server, the client is an Arduino Server eth0 - 172.16.145.139 ...
1
vote
2answers
416 views

nginx: redirecting only 'www' subdomain to main domain?

Update: April 20th 2013, Still no solution found, please help Looking at my nginx config, the only like that could be the culprit is this: server { listen 80; listen [::]:80 ...
1
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2answers
2k views

Difference between routing and forwarding table

What is the difference between forwarding and routing tables?
0
votes
1answer
227 views

How to configure iptables rules for connecting 2 eth to the net (forwarding & masquerading)

need some help on configuring iptables rule for forwarding and masquerading Given I have these configuration: switch1 ---- (eth1) ----- router ---- (eth2) ----- switch2 ...
0
votes
1answer
787 views

preventing “invalid security certificate” (ssl_error_bad_cert_domain) when using a subdomain forwarded to a dynamic dns domain name

I've been looking around in Google and so far have not found a page that addresses my situation, which is weird because I'm sure it's been attempted thousands, if not millions, of times before. I ...
0
votes
2answers
138 views

Apache2 mixing forward and reverse proxy

I upgraded apache2, which behaves different now. I want to mix a forward proxy, only accessable from the intranet and a reverse proxy which should be accessable from the internet. What happens is ...
0
votes
2answers
178 views

Accessing website from two ports - Apache config

I have a website setup and want to be able to access the same site from two different ports. Does anybody know how I would do this? For example, I want to be able to access exactly the same at ...