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

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44 views

Clients connected to “vlan hub” can't access internet on dedicated, natted vlan

I'm trying to get my network up and running with my new provider's vdsl router, which can't operate in "modem-mode" or "bridge-mode". My setup so far is as follows: I have two managed switches, ...
0
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1answer
107 views

Windows Server 2012 using Remote Desktop through RRAS to private network

I've already posted this on the Microsoft TechNet forums, but his site seems to provide more informative answers, so here goes... Here is my network configuration, in a nutshell. Cisco small ...
4
votes
1answer
153 views

Possible to have DHCP hand out different DNS server address when using different tunnel?

We have several ASA 5505 deployed. Currently, we have a setup where the local ASA is answering DHCP queries and is configuring clients with two DNS servers: our DR site DNS server (we use AD) and a ...
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2answers
72 views

Installed a new Sonicwall at MPLS provider's DC, got it working by luck but have no idea WHY it's working like this

I'm nervous leaving the device like this because it makes no sense to me WHY it's working like this. We put in the new Sonicwall to replace an older Cisco ASA. Just did the basic setup, using same ...
0
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0answers
69 views

VPN to Windows Server 2012 on ec2 not routing

I have a Windows Server 2012 instance on EC2 so I can VPN into the private network to access machines not exposed via a public IP. I can connect to the Windows Server VPN by its public IP and ...
0
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0answers
21 views

Re-routing packets back inside the network on a SonicWall firewall

I have two wireless networks, one guest network which uses a 10.0.0.0 network to assign IP address to guests and one internal one who gets the IP address from the internal DHCP (let's say ...
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0answers
39 views

Routing between eth0 <-> tun0 doesnt work

I am configuring a linux vm as a openvpn client to act as router to route to another machines connected to the central vpn hub Data. Lan: 192.168.10.0/24 Remote vpn subnet: 192.168.40.0/24 openvpn ...
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1answer
26 views

How to duplicate multicast packets on several interfaces?

I would like to send a stream from a Linux server to several Linux clients via a multicast address. The clients are directly connected to the server but on different interfaces: bnep0 and bnep1. ...
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2answers
58 views

what is a non routable vlan, and when should I need it?

Can someone explain me what is a non rout-able vlan, and when/why situation I will need it? as far as I know it's a vlan that won't assign IP automatically, and only devices in the same vlan can ...
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0answers
22 views

Microsoft Application Request Routing (ARR) routing condition from HTTP body

I want to build the following system, but want to route depending of the HTTP body, in my case SOAP messages. Is that possible and how? These are the available HTTP headers and server variables, ...
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2answers
98 views

router: ping fails at specific time for 40 seconds

my network looks like this: ISP cable --- ISP modem/router (2 in 1) \ \--- my router --- wifi connection --- computer 1 \----------- cable connection ...
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1answer
62 views

How to configure two default routes on Linux?

I'm configuring a routing server with Linux. An Ethernet link (eth0) to internet (fast, but can't access some sites); An OpenVPN link (tun0) to provide internet access to local users; An OpenVPN ...
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0answers
53 views

iptables, outside and inside NAT; Return traffic going out incorrect gateway

Overview (TL;DR at bottom) I have a third party firewall/proxy appliance which is running Linux (Ubuntu), and its routing and firewall engine is backed by iptables and the Linux (source)routing ...
0
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1answer
46 views

Windows Server as a PPTP Gateway

I have a Windows Server 2012 server at work, which is currently used as a domain controller, and an internet gateway. The current internet connection uses a USB dongle, which appears like a standard ...
0
votes
1answer
131 views

OpenWRT: Redirect traffic from LAN port #4 to specific IP address

I am working with a TP-WR1043ND OpenWRT router which allows port mirroring, as described in the dedicated wikipage. I'm mirroring the WAN port (#0) to LAN port #4. There is no cable in the LAN port ...
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0answers
15 views

How to route unknown client IPs back down their respective PPTP VPN tunnel?

I have a server that accepts VPN connections using PPTP. I'm testing the setup process for various PPTP clients and i've come across a specific issue with Android clients. Packets arrive from the ...
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0answers
115 views

FortiGate 310B public ip pool into internal port

I have a FortiGate 310B with WAN port with /27 public IP pool from the ISP. The WAN port is configured with primary IP 1.1.1.1/27 I would like to provide servers within the Internal port a public IP. ...
1
vote
1answer
44 views

Routing between two servers via a virtual interface

I have two servers, each running an openvpn service, the first one (uno) has the vpn range 10.170.0.0/16 tied to UDP 1194, and the second one (dos) has 10.180.0.0/16 tied to TCP 443. I would like to ...
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1answer
38 views

Amazon VPC NAT instance routing problems

I have an issue with routing. I have 2 public subnets: 172.31.1.0/24 and 172.31.100.0/24 In each of these I have a NAT instance. Each NAT instance is an OpenSwan VPN peer to a remote location. This ...
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votes
2answers
43 views

Reaching Local Network which is under NAT with no public IP

I have a place called (lets say) REMOTE. REMOTE is connected to the Internet using 3G/4G Modem + Router. Unfortunately my mobile Internet provider does not give me public IP address. In REMOTE I have ...
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0answers
21 views

Glusterfs network assignment

I'm setting up a test system with a distributed, replicated GlusterFS volume. I currently run 2 nodes with 2 NICs each. The idea is to have replication and all other gluster internals on one network ...
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1answer
63 views

Remove the unspecified gateway from linux routing table

I've a remote linux machine whose the routing table is : [root@hostname]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 ...
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2answers
59 views

Send PHP requests from dedicated IP instead of shared IP [closed]

I have set a dedicated IP for a website (using directadmin), but all outgoing php requests are sent from the server's shared IP. Result of the following code is always the shared IP. $a = ...
2
votes
1answer
95 views

systemd-networkd and direct routes

I have problem adding direct routes through systemd-networkd. What I'm trying to achieve is similar to: ip a a 192.168.0.2/32 dev enp0s3 ip r a 192.168.0.1/32 dev enp0s3 ip r a default via ...
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1answer
220 views

Linux: Bridge two NICs and route traffic through VPN tunnel except specific destinations and ports

I have a Linux PC (Debian Wheezy) with two Ethernet adapters. Adapter eth0 is connected to the Internet (modem/router/DHCP/firewall thingy) and eth1 is connected to an WiFi access point. All other ...
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1answer
58 views

Linux route cache seems to load outdated settings

On SLES 11 SP3 (Kernel 3.0.101-0.46) I see the following route behavior: When I set a route specific MTU once via ip route change ... mtu lock 1500, everything works as expected (setting an MTU of ...
1
vote
1answer
128 views

Why does a router ping failure respond using a different IP?

From Windows CMD, when trying to ping another computer on our internal LAN, the IP obviously fails to respond. However the reply of "Destination host unreachable." comes from yet a different IP, and ...
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0answers
42 views

Domain routing to incorrect domain on Digital Ocean server

I have 2 sites hosted on my LAMP droplet. The subdomain.domainX.com site is routing to domainY.io I have 4 configuration files in my /etc/apache2/sites-available: default, default-ssl.conf, ...
3
votes
3answers
163 views

Advanced dynamic routing with external program

I need to build a system in which i am able to route packets based on a number of parameters, such as port/protocol etc, which are somehow "normal", but also on other aspects, such as queue length, ...
0
votes
1answer
21 views

Barracuda Web Application Firewall WAF - HTTP - Barracuda Does Not Filter Links Clicked on Page

I am trying to figure this out. Basically the virtual IP 192.168.1.110 will filter port 80 to the real ip address 192.168.20.110. I can confirm this in the logs. When I click any link on the page ...
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0answers
69 views

Deploying SSTP VPN on Windows 2012 - How to route packets to other servers?

I've finally managed to deploy an SSTP VPN between my Windows 2012 (non R2) server and Windows 7 client. It's amazing how much easier it work with a real certificate and avoiding the self-signed ...
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0answers
87 views

Port forwarding to different subnet

I have two routers: router A with internet access, and router B acting as wireless access point. Devices are attached to router B via ethernet. I need to forward some ports to PCs attached to router ...
2
votes
1answer
70 views

How to find which routing protocol a router is using. And if found how to test it

I was recently asked a networking question in an interview which I did answer but the interviewer was not pleased. The question was : "Given an actively running router, how would you know what ...
0
votes
2answers
139 views

How to route outbound traffic for a particular destination IP address to GRE Tunnel in CentOS?

Hello I am trying to configure a network like this network diagram :- Well I have to create a GRE Tunnel at my alpha server and route some particular traffic to GRE Tunnel.I want to do the configs ...
3
votes
1answer
114 views

2 NICs, same subnet, different default gateways

I have a switch on which 4 modem/routers and 2 servers are connected. Each server has 2 processes running and 2 NICs connected. What I want is that each process is routed out of either one of the ...
0
votes
1answer
55 views

How to connect Network and GRE Tunnel Traffic and control and flow of TCP/UDP Packets?

I need some serious help with a complex routing setup I am doing. Lets I have a /24 IPv4 .I am announcing the same /24 at two different locations. One is a ISP exchange center where all the ISPs peer ...
1
vote
1answer
85 views

VPN client acting as gateway for the rest of the LAN

To have a simple scenario, let's say we have: Office: Four computers running Debian and another computer running CentOS. HQs: A Debian running the VPN server which is located at the central HQs. ...
0
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0answers
77 views

Routing for NAT and site-to-site VPN with RRAS

I'm trying to set up a split-tunnel site-to-site VPN using an RRAS server that is currently doing NAT. Right now, the NAT works: all clients are assigned an IP address in the 192.168.2.0/24 range, and ...
16
votes
3answers
1k views

How do I make actual use an IPv4 block that I own?

We (a small French company) had reserved an IPv4 /24 block (256 addresses) from RIPE-NCC, over 20 years ago, but never used it. Update: our assignment belongs to the "Provider Independent (PI) address ...
0
votes
1answer
48 views

How to route from Ubuntu server with two ISP connections?

At the office we have a server with a single $SERVER_IF having a local IP address $SERVER_IP_MAIN=192.168.1.12/24 behind an ADSL router $ROUTER_MAIN with a static external IP address from $ISP_MAIN. ...
0
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0answers
64 views

Google Domains: Dynamic DNS

Google Domains support Dynamic DNS. That is great, as my domain and Dynamic DNS information can come from the same provider. For Dynamic DNS to work, I usually need the following info: Update URL ...
2
votes
3answers
123 views

Remotely connect to device with ip from different subnet

I have to figure out some way to remotely connect to D-LINK switch currently working on default address 10.90.90.90 (service guys have replaced broken one, but they have forgotten to do initial ...
3
votes
5answers
275 views

Router limits network performance but its CPU load isn't 100%

I'm using a PC Engines APU device running FreeBSD as a NAT router. The setup is very usual: one WAN connection and one LAN connection. Theoretically, WAN connection is 800/40 Mbit/s and the LAN one ...
0
votes
0answers
30 views

DirectAccess Multiple Subnet Deployment

I am looking at doing a DirectAccess rollout on AWS using a single Server 2012 R2 instance behind an edge device. My clients are mostly running Windows 7 Pro/Ultimate, but there will be some other ...
2
votes
2answers
90 views

How to connect 2 networks without access to router config?

I am trying to connect 2 devices in different subnets. Device 1: IP address: 172.20.35.1 netmask: 255.255.0.0 gateway: 172.20.1.1 Device 2: IP address: 172.20.100.100 netmask: 255.255.255.0 gateway: ...
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votes
1answer
78 views

Route port forward through 2 windows server 2008R2 network adapters to another network

our phone system at work is on a separate network to everything else and I need to forward a port from our gateway to it to allow our phone tech to remotely administer it. I have plugged the phone ...
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0answers
151 views

Routing Issue - can't ping gateway from other routers in full mesh

I am setting up a new network. I have 4 routers in a full mesh. Edge1, Edge2, Client1, Client2. This are Mikrotik Cloud Core Routers (not that it matters). They are set up with OSPF (distributing ...
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0answers
144 views

Mikrotik - routing a single address, part of a direct accessed subnet

I have a Mikrotik RB2011 and several TP-Links - WR740N, located at different geo locations, part of my ISP MAN network. My ISP provides me with an (static) address/mask and a gateway for each device. ...
0
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0answers
63 views

How to set up a Linux gateway for multiple WAN networks?

I have a network with the following IPv4 and IPv6 addresses: eth0 Link encap:Ethernet Hardware Adresse 30:85:a9:42:3e:60 inet Adresse:109.2xx.239.145 Bcast:109.2xx.239.255 ...
0
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1answer
153 views

How to Setup OpenVPN as Internet-Gateway and Connection between multiple Private networks on Virtualized Server

I am trying to implement the following: Network A (e.g. 192.168.1.0/24) with Router (192.168.1.254) Network B (e.g. 192.168.2.0/24) with Router (192.168.2.254) Online vServer for VPN (e.g. ...