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0
votes
1answer
64 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 ...
0
votes
2answers
227 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
904 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
1answer
1k 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
634 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
202 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
342 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 ...
1
vote
1answer
2k 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
1answer
145 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
34 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
4k 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
703 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
568 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
618 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 ...
2
votes
3answers
362 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
142 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
90 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
204 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
940 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 ...
1
vote
1answer
1k 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
250 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 ...
5
votes
0answers
631 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
vote
0answers
80 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
930 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
133 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
254 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
83 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 ...
-3
votes
1answer
28 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
432 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
3k 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
64 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
107 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
465 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
317 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
82 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
689 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 ...
4
votes
3answers
10k views

Difference between routing and forwarding table

What is the difference between forwarding and routing tables?
0
votes
1answer
485 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
1k 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
241 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
328 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 ...
1
vote
1answer
96 views

Junos Routes - Route Specificity vs Protocol

I am trying to load balance a router to send traffic over two uplinks (with equal capacity). I generated static routes for every /8 on the internet (for ipv4) and plugged it in. Unfortunately it does ...
0
votes
0answers
124 views

Multiple Ports Forwards, Most Working, but Not All?

So I have this ASA5505 setup and pretty much everything works, except a couple key port forwards. Can anybody spot ANY reason why SOME port forwarding would not work? Specifically I know the 50000 ...
0
votes
2answers
133 views

IP:PORT redirection software?

i'm looking for a way to redirect traffic to an other ip on a certain port. Been able to do this with iptables on linux and netsh on windows but in both cases the client gets the ip address of the ...
0
votes
3answers
346 views

iptables FORWARD 80 to 8080, no direct access on 8080

iptables -A INPUT -p tcp -m multiport --dports 80,443,8080,8181 -m state --state NEW -m limit --limit 50/minute --limit-burst 200 -j ACCEPT iptables -A INPUT -p tcp -m multiport --dports ...
0
votes
2answers
311 views

Forward all email to another user in Exchange 2010

I am trying to forward emails for a user who has left our organisation to another user, but I cannot find how to do it. We have recently upgraded to Exchange 2010 (from 2003), which now runs on a ...
1
vote
1answer
537 views

Server 2012 DNS forwarding - core.company.com

Folks: I'm moving from an old SBS2003 network to Server 2012, and thought I'd take the opportunity to have a spring clean by creating an entirely new AD. My old domain was mycompany.local, however it ...
1
vote
0answers
88 views

forward a specific port from linux server (ubuntu) through firewall server (ubuntu)

I'm doing the following: % autossh -i YYY.pem XXX@SERVER -N -R 90:localhost:9000 -o ServerAliveInterval=30 to forward a server port from the local machine to the public machine. But connections ...
2
votes
1answer
650 views

Can't connect to instance via floating IPs, not natting/forwarding properly

I'm having trouble getting floating IPs to work properly on my OpenStack setup. It looks like the controller node (running nova-network) isn't forwarding the traffic to the instances. I've got a ...
0
votes
1answer
245 views

bind forward different domain to different ns

Recently I've started a bind9 NS host for the internal network of my school, providing a "CLEAN" NS Server. I want to forward almost all traffic to NS provided by ISP, but forward a few other domains ...