the process by which data packets on communication networks are forwarded into the direction of their ultimate destination by routers.

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7 views

Linux: even with route, packets not going over the interface

I apologize but this is a question I jotted down when debugging another problem, so I can't provide any additional information. Anyway: suppose we have no firewall rules, and the following route ...
2
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1answer
14 views

Shorewall: VPN clients can access LAN resources, but not the Internet

I set up a network in my studio's office with a Raspberry Pi serving as a VPN server for remote clients to access LAN resources. Router port-forwards 1194 port to RPi, so it's accessible from the ...
2
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0answers
12 views

How to split traffic through two different network adapters based on TCP port in OS X

I have a scenario where we will be using a Mac to stream video content to an RTMP server. This RMTP service provides 2 ingest URLs so that you can upload the same video content twice and have ...
0
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0answers
12 views

How to correctly setup Shorewall on VPN server connecting VPN clients to server's local network and vice versa?

I'm having some problems with my network setup. It looks something like this: The goal was to create a VPN server inside the local network that will a) Allow VPN clients to access local network ...
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1answer
25 views

Iptables DNAT working in my own network, but not through VPN

For some reasons I need to switch a server ip to another ip, in order to be seen by another computer elsewhere through vpn. So I'm using iptables (didn't know any of that until yesterday) and testing ...
1
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1answer
15 views

Routing between pfSense Subnets and IPSec VPN

I have a pfSense Router, which is the endpoint of a site-to-site IPSec VPN. In the pfSense the main LAN Interface is 10.0.2.1/24 and it has a virtual IP 10.0.125.1/24 The IPSec Phase 2 connects the ...
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1answer
23 views

Creating a Firewall / Gateway Server [on hold]

I'm looking to increase my server network security by creating a Firewall + Gateway server for a web server. The servers are all part of digital ocean. The webserver is a LAMP stack with multiple ...
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0answers
36 views

Large scale network routing [on hold]

So i'm having a chat with my development team colleagues and we realise that we actually don't know how large scale networking actually works and this question came up ... Lets say i'm the guy at ...
1
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1answer
23 views

Does switching routers when using same IP cause temp downtime?

Still learning networking but from my understanding MAC Addresses are what route network traffic so if I switch out a router but configure them with the same IP does it take time for the new MAC ...
0
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0answers
3 views

How to passthrough Wifi DNS and interenet access to DHCP client [migrated]

I have a laptop that connects to wifi for internet access. This computer is running Linux (Fedora), and it is acting as a DHCP server for another (ubuntu linaro) computer that does not have a wifi ...
2
votes
0answers
37 views

OpenVPN allow two clients to connect to each other without using client-to-client globally

I'm running OpenVPN 2.3.7 on CentOS 6. I'm using routing (tun) and have two instance of OpenVPN. On the second instance there are two clients that I'd like to be make visible to each other i.e ping, ...
0
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0answers
3 views

ppp interface: Possible Route Issue

So, I've two machines with 3G cards, using the same carrier, and connected to 3G network using a specific APN. This APN is for a private customer network. Under both machines (linux), I used sakis3g ...
1
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1answer
15 views

Connect from one LAN to another LAN through SonicWALL

I have a LAN (LAN 1) on the 192.168.1.1 subnet, and another LAN (LAN 2) on the 192.168.2.1 subnet. LAN 1 is on the X0 interface, LAN 2 is on the X4 interface. I want to be able to access a device ...
1
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0answers
3 views

Summary Error Configuring HAProxy via pfSense

I configured a frontend record that is refering to a backend server pool with one record. The referred HAProxy Backend server pool contains a single record with the Max con value set to 2000. In the ...
0
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2answers
53 views

Reaching system behind router

I have a situation where I have a small server appliance that I want people to be able to just plug into their router, turn it on and let it work. When the appliance starts up it determines its lan ...
0
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0answers
16 views

Routing and VPN Setup

The network setup is as follows: Router: eth0 1.1.1.1 (outside) eth1 192.168.54.4 (inside) eth1 10.54.4.4 (inside) Cisco ASA5505 192.168.54.1 (inside) 10.54.4.1 ...
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0answers
25 views

eth0 as a management interface for port 22 and 3389 and everything else through wlan0 (iptables) [closed]

I would like to use iptables to: Allow port 22 on eth0 Allow port 3389 on eth0 Disallow everything else on eth0 Allow all traffic on wlan0 (web browsing, etc.) Essentially I want to make eth0 the ...
0
votes
1answer
35 views

Lotus Domino - split mail

Here is my environment: My email server is hosted externally (not on Lotus Domino) - let's call it domain.com I have an existing Lotus Domino Application Server (9.01) [ServerA] A new Domino ...
0
votes
1answer
20 views

Egress Interface Routing - Potential Solution?

We have an ISP (ISP1), with a router maintained by the ISP. We are bringing up a 2nd ISP (ISP2), with routers we will deploy and maintain. We'd like to gradually migrate services from ISP1 to ISP2, ...
0
votes
1answer
36 views

127/8 address is not passed to IP stack?

I send IP/UDP frames using raw sockets with destination IP address from 127/8 range - e.g. 127.0.0.6. So, packets are sent over the network OK (checked using tcpdump on the target device). But on ...
0
votes
0answers
10 views

OpenSwan IPSec tunnel not routing correctly

I am trying to enable site-to-site connectivity between my network and a Windows Azure network. I have configured openswan in the local network and service ipsec status reports that the tunnel is up ...
0
votes
1answer
45 views

Windows Server 2008 R2 Standard Dropping Packets

I am seeing a strange problem with my WS2008R2 server I believe is related to networking. The symptom is that 6% of all attempts to ping the server using tcp fails. For example, from another machine, ...
0
votes
2answers
9 views

Redirecting domains and all ports to static LAN ip on connect to a virtual router

I am pretty new to this community and i hope i am posting my question to the right place! I am wondering of the following thing. I have one REAL IP and i can asing many domains to it. I have many ...
0
votes
1answer
43 views

How can I route SSH traffic based on a subdomain? [duplicate]

I have a home server running ubuntu 10.04 that is running two services: an SSH service a dockerized gogs service I would like to essentially reverse-proxy incoming SSH connections based on the ...
0
votes
1answer
10 views

ipv6 address configuration on serial interfaces

I tried to configure Ipv6 static routing on three routers, I configured ipv6 addresses on all three routers using ipv6 address auto config, The middle router have been configured with different global ...
0
votes
1answer
25 views

Routing different subnets from multiple sources

I have a unique situation involving a lot of weird nonsense contracts which leaves me with two firewalls. I have my primary router/firewall as a pfSense machine and a secondary router/firewall as a ...
1
vote
2answers
50 views

site-to-site vpn tunnel - does hardware matter? [closed]

I have been tasked with setting up 4 offices and connecting them all together so they can be on the same network. Does hardware really matter or could I build a decent machine in the low $1000's and ...
0
votes
0answers
18 views

Problems with route table with two nics on different subnets

I have an Ubuntu server with two NICs on two different vlans. Both nics are able to reach the internet. The server is an Ubuntu MAAS machine and therefore has pxe and dhcp and such. The DHCP server ...
2
votes
2answers
67 views

How to get public IPs on ESXi VMs?

We have a dedicated server with a hosting provider. We are running ESXi 6.0. The server has a single public IP which is currently being used for the management interface. The provider has also ...
1
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0answers
57 views

Access local network resources remotely using OpenVPN [closed]

I've been banging my head against the wall on this for a week, so thought I'd finally turn to the experts. Much appreciated for any help. What I'm trying to do: I have some resources on my local ...
1
vote
1answer
36 views

Route IP Traffic Based on Process to Different Default Routes / Interfaces

I'm trying to determine if it is possible to selectively route IP packets from a process or process group through a specific interface while all other packets are routed through another interface. ...
0
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0answers
16 views

Openswan : Traffic not passing through tunnel

PLEASE HELP : whenever I ping one of the other site servers , the connection does not go through the other site public ip. the setup is as follows : Public gw ip of other site : 6.6.6.6 Server that ...
0
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0answers
26 views

Openswan VPN routing issue

I have configured the openswan VPN correctly on an EC2 server ( Elastic IP ), and it shows 2 tunnels up. Given the following setup : MY_PUBLIC_IP: x.x.x.193, MY_ENCRYPTION_DOMAIN: ...
1
vote
1answer
41 views

route traffic directly without vpn while the vpn still connected

I have a box with fedora, connected to vpn, forwarding done by iptables, every thing is fine, and it is always connected, vpn interface is ppp1, connected through the pppoe interface: ppp0, but ...
0
votes
0answers
14 views

Why two network with NAToverload not communicate?

I have two private networks: 192.168.1.0 192.168.2.0 These networks communicate with each other via static routing, but when I set up the NAT overload, they don't communicate. Why? I examined the ...
2
votes
2answers
135 views

Linux Routing with two NICs (LAN vs Internet) with NAT and bridging for VMs

My Setup: There is only one physical machine in this setup, a Host System for Virtual Machines (VMs) with two network adapters. One NIC (eth0) is connected to an internal network (LAN subnet, e.g. ...
0
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0answers
24 views

Make LXC containers directly accessable with ipv6

First off I have a special IPv6 address allocated to my dedicated server, just 1. A ::1/128 one. But I can assign addresses to eth0 (eg ::2/128, ::3/128, etc). Now I would like to run LXC containers ...
0
votes
1answer
39 views

AWS VPCs + VPN between regions. How does DNS work?

When using a VPC on AWS DNS is handled in a neat way whereby any requests for the external DNS name for an instance in the VPC resolves to the local/private IP address of the node. This is useful ...
0
votes
1answer
24 views

OpenVPN: Setting client's ip address as route gateway

I want to create an OpenVPN config entry which looks like this: route 255.255.255.255 255.255.255.255 {CLIENT_IP_ADDRES} Is there any way to accomplish this without hard-coding the client ip into ...
1
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0answers
42 views

Change source address based on destination IP: NAT or routing?

I have a router/host with multiple public IP addresses. I want to change the source ip depending on some destination addresses. This has already been asked here: If the traffic originates from some ...
0
votes
0answers
10 views

isc-dhcp: provide routing option?

I wonder if it is possible to provide Windows port forward using isc-dhcp. In my company we have 2 internet connection and the first one is highly restrictive. So we cannot do FTP or SFTP on this ...
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votes
1answer
28 views

Can TCP be used like UDP by simply not sending ACK?

Assuming both client & server cooperated, could you emulate the functionality of UDP by not sending ACK packets, and not sending retransmissions? Or would most routers somehow bork the process if ...
1
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0answers
46 views

How can I do traffic shaping in Linux by IP for both way communication?

Well, I've already gone through How can I do traffic shaping in Linux by IP? on serverfault & what I'm trying to achieve is pretty much same. Internet--------Linux Router----Switch-----Clients ...
1
vote
1answer
49 views

Difference between “genmask” and “netmask”?

In the output of route -n on Linux, you get something like this: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 10.0.0.1 ...
1
vote
2answers
28 views

Can I add a static route to a VPN network if the default gateway IP is dynamic? (Windows 7)

Can I add a static route to a VPN network if the default gateway IP is dynamic? (Windows 7) This is easy to solve with a permanent route if the default gateway does not change as you can do this: ...
0
votes
1answer
25 views

Using gateway on remote network to reach another subnet

I have the setup like this: VPN Clients VPN Server 10.1.1.2 10.1.1.1 ---> Internet 10.1.1.3 10.1.1.4 10.1.1.5 | \ 10.0.0.0/24 LAN The VPN clients are using the VPN server as ...
9
votes
1answer
177 views

Multipath routing in post-3.6 kernels

As you all probably know, ipv4 route cache has been removed in 3.6 Linux kernel series, which had serious impact on multipath routing. IPv4 routing code (unlike IPv6 one) selects next hop in a ...
0
votes
1answer
38 views

differences between adding ip route to system and adding additional ip address

I found that I can add an additional ip address to a network adapter which appears to be solving my problem of having multiple devices I need to talk to which are on different subnets (but same ...
0
votes
0answers
27 views

ip rule not acting on fwmark

I'm trying to use iptables to load balance web traffic over multiple DSL lines by marking the packets and routing based on the mark. I'm working with CentOS 6.6, Kernel 2.6.32-504.16.2.el6.x86_64, ...
1
vote
1answer
30 views

Virtual networking, can ping and traceroute, can't apt-get update [closed]

I'm building a virtual network with 6 virtual machines in virtualBox. One of them acts as router/nat/firewall. This first machine uses 4 network cards: eth0 -> Internet eth1 -> Subnet 1 eth2 ...