0
votes
1answer
270 views

How do I Reject all SMTP traffic except from a specified IP Block using DD-WRT?

I am running DD-WRT v24-sp2 std firmware on a Linksys WRT54GL. I have a port forward configured on port 25 to ip 10.10.10.1. What I want to do is allow this port forwarding, but only from WAN IP's in ...
0
votes
0answers
76 views

how to forward pgadmin request via another box with iptables

I have two remote Linux boxes. I can access box1 directly but need to ssh into box2 from box1. What I am trying to accomplish is use iptables to forward request from pgAdmin to box2 via box1. I.e. I ...
1
vote
2answers
154 views

Port forwarding, iptables apt-get not working

I'm currently setting up my server. I use proxmox which similar to vmware. Important thing to know is that i only have 1 external IP address. On my server, I forward port 80 and 443 to virtual host ...
0
votes
1answer
1k views

iptables: Internal port forwarding with fwmark and routing tables

I have 2 servers and I need to forwart to internal port. To explain I use the server with 2 interfaces (internal/external) as server A and the internal server as server B. In server A i use ...
1
vote
1answer
181 views

openvpn& iptables — portforwarding and gateway

The problem is similar to this scenario: iptables rule still take effect after deleted Scenario: There are several clients(C1~C10) providing some services, such as SSH,HTTP..... The clients are ...
0
votes
1answer
108 views

iptables rule still take effect after deleted

Scenario: I built a server(S) with openvpn. And there might be several vpn clients(C1~C10) providing SSH/FTP/HTTP behind "S" Several users(U1~U10) on internet will login through 'S' to access their ...
0
votes
1answer
377 views

IPtables and Remote Desktop with Proxy

So I setup a windows 2008 web server R2 on VirtualBox. Currently using Bridged Network. I can remote desktop to the machine hosting the VM (10.0.0.183) but cannot remote desktop to the VM itself ...
0
votes
2answers
3k views

openvpn port forwarding for SNAT or DNAT with Iptables?

I have managed to get openvpn setup and get it to issue static internal ips to clients. Now the trouble i have is I'm now trying to assign open port per client as they now have static internal ip it ...
1
vote
1answer
1k views

iptables port forwarding for active UDP connections

I am trying to set up port forwarding on UDP from port 12345 to port 54321 using the following: iptables -t nat -A PREROUTING -p udp -i eth0 -d 192.168.0.1 --dport 12345 -j DNAT --to ...
0
votes
1answer
304 views

IP Tables Port Forwarding

I have 4 servers behind a load balancer, but only 1 of them is running a particular service. I want three of them to forward requests to the fourth, based on the port. So, at present all 4 are running ...
2
votes
5answers
14k views

Linux: How to port forwarding with iptables between 2 hosts on different networks?

I'm almost desperate... I've been reading for about 2 days iptables forwarding examples and I cannot do a simple port forwarding. I got 2 machines on different networks. server1 (S1 with ip ...
1
vote
1answer
159 views

Simplest firewall does not work

I try to redirect ssh-traffic from one machine to other with following bash sctipt: IPTABLES="/usr/sbin/iptables" $IPTABLES -F $IPTABLES -X $IPTABLES -F -t nat ...
0
votes
1answer
513 views

iptables redirecting for specific ip to port 8080

My PC has two IP addresses. How can I forward incoming requests on port 80 to 8080 from one of my IP using iptables in CentOS ? For example, I have ip addresses 1.1.1.1 and 2.2.2.2, I want to forward ...
0
votes
1answer
286 views

Linux iptables usage route outgoing traffic

Hi: I have a problema, i want to enter a site that blocks by default all ips, except some ones, my server ip is not allowed, but i have another server ip allowed, so i have done a local ssh port ...
1
vote
1answer
4k views

iptables https transparent proxy with privoxy?

So I have a privoxy running (on port 8080) on a box acting as a router. My goal is to route all HTTP & HTTPS traffic through privoxy on there. HTTP works with the following command iptables -t ...
0
votes
2answers
1k views

iptables redirected port 80 to 8080 - How to disallow direct access to port 8080?

I've routed all requests from port 80 to port 8080 for my Tomcat server using iptables. iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 8080 Now http://mydomain.com/ ...
0
votes
1answer
844 views

Redirect local service to custom proxy

I'm trying to create a custom proxy program but I have a problem. My program connects to a fixed port from a random port and I need to tunnel all this traffic by my local proxy. I think the solution ...
1
vote
4answers
5k views

apache listening on 80, but not on any other port

i wanted to change a working apache configuration of example.com (exampleIP = 1.2.3.4 ) to change from the default port 80 to port 8001, such that http://example.com:8001 should work. I wasn't able to ...
37
votes
4answers
101k views

How can I port forward with iptables?

I want connections coming in on ppp0 on port 8001 to route to 192.168.1.200 on eth0 on port 8080 I've got these two rules -A PREROUTING -p tcp -m tcp --dport 8001 -j DNAT --to-destination ...