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

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591 views

DHCP For Voice And Data VLANs With Router-on-a-Stick

Background: I have 2 Powerconnect 62xx switches stacked with a Watchguard XTM-26 between them and the outside world. Currently all devices connected to the switch are in the same vlan and the ...
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63 views

Linux router cache shows very high RTT (30 sec)

one IP from the route cache is exceptional high (>30sec), the others are below 100ms. # ip -s -o r s c |grep 10.20.61.12 local 10.20.55.98 from 10.20.61.12 dev lo src 10.20.55.98 \ cache ...
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319 views

How to route public ipv6 address to private lxc container address?

I have a pool of public ipv6 address I want to use to expose lxc containers. On the host machine I created a macvlan interface eth0-macvlan and bound a public address to it 2600:3c01:e000:83::1/64. I ...
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1answer
5k views

pfSense routing between subnets behind OPT1 and LAN

pfSense short config summary: WAN interface is on a registered Internet block of addresses connected to ISP via fibre LAN interface has IP address 10.200.1.3/24 OPT1 interface has IP address ...
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1answer
55 views

Worldwide IP Latency [closed]

I want to create a simulation of the protocol MIPv6 (http://www.ietf.org/rfc/rfc3775.txt), for this reason I need information about latency, jitter and round-trip time. My first guess is install ...
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2answers
78 views

Manually adding a destination to the routing table in ubuntu

The default routing is through a tunneled (VPN) gateway. I have a destination (my ISP user-login server) to which I can't connect via a tunnel but only through the eth0 interface with the ISP assigned ...
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1answer
146 views

access same subnet on different interfaces

I have a router with external (WAN connection) subnet 192.168.1.0/24 and also on same router a tunnel to a remote location which have the exact same subnet (192.168.1.0/24), and i need from my LAN to ...
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97 views

FTP Traffic routing through NAT prevents me from logging in

I need to send all FTP traffic to a particular server from a NAT. Server A connects via FTP to an IP which is routed to the NAT and then over a VPN. That traffic then comes back and gets routed from ...
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2answers
86 views

Multicasting on server with bridged interfaces

Network: 10.1.1.2 and 10.1.1.3 in same network. 10.1.1.2 has VPN server running in bridged mode. 10.1.1.4 - ip address of VPN client. All machines have Debian 6 installed. I'm trying to test ...
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2answers
776 views

Can a Windows DHCP server serve a scope that it is not a part of?

The situation I have a windows SBS 2008 box running as DC/DNS/DHCP/Exchange/File Server to a network on 192.168.1.0/24. Suffice it to say that the IP of the SBS box is immutable. At some point in the ...
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53 views

For a typical broadband ISP, are nodes on the same subnet routed together or are they bridged?

For a typical broadband ISP, are nodes on the same subnet routed together or are they bridged? In other words, what kind of path will a packet take when going from one node on a subnet to another for ...
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2answers
422 views

How can I configure access to pfSense on Xen

I have a new Xen installation on which I want to run virtual machines. My hoster provided me two separate IPs in different subnets, say x.x.x.x and y.y.y.y. I want to set up pfSense on Xen and ...
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0answers
108 views

Benchmark software IP router performance using single Linux device

I'm testing routing performance using software Linux router (in-kernel). My usual test setup has 2 additional PCs: one PC is packet sender (packet generator) and other PC is receiver. There is ...
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0answers
510 views

Routing on CentOS with multiple subnets

I have a server with 2 VLANs on a NIC, configured as follows: eth0 Link encap:Ethernet inet addr:192.168.10.20 Bcast:192.168.10.255 Mask:255.255.255.0 eth0.10 Link encap:Ethernet inet ...
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470 views

Some client in my network, sometimes can't ping Gateway and DNS server

I've a local network with 100-150 clients, one Core Switch and 10-12 switch that Switchs are connected to the Core Switch and clients are connected to switchs. In my network sometime some clients ...
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1answer
41 views

VSFTPD : FTP can't resolve routing

I'm setting up a server but I can't get FTP to work properly. I use CentOS with vsftpd as ftp server. I'm working on a virtual server and there seems to be an error with the routing. When trying to ...
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2answers
102 views

Accessing Server hosted on USB remotely

I'm running a program called VMlite VNC Server for android on a set of Phones connected via USB to a windows XP machine. Due to the way we're utilising the phones, we need them unrooted and with Wifi ...
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1answer
93 views

How is my GRE-Tunneled packet being routed? [closed]

I'm trying to figure out exactly what is happening when I create a GRE tunnel. My network looks like this (-> means directly connected): Computer A (eth0: 10.0.1.1) -> (eth0: 10.0.1.2) Router B ...
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16 views

Email duplicated from Barracuda Cloud layer?

Incoming email to our domain first goes to the Barracuda Cloud Protection Layer before being passed to our local Barracuda 300 antispam appliance. It then goes to our email server (CommuniGate). ...
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1answer
5k views

Routing from mikrotik two IP addresses to same gateway

I have 2 static addreses (a.b.c.72/24 and a.b.c.128/24) on gateway1 and gateway2 interfaces. ISP have one gateway a.b.c.1 . I can use a.b.c.72 only on gateway1, a.b.c.128 only on gateway2. How to ...
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146 views

VPN client names incorrectly resolve to their private LAN IP addresses, DNS Issue?

My office network is running a single Windows Server 2012 Standard as Domain Controller, DHCP, DNS, NPS, and RRAS. DHCP has a scope of 192.168.1.50 through .200, and RAS is configured to get IP ...
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1answer
57 views

DHCP wont release allocated IPs [closed]

I have a TP-Link td28151 router and I am using DHCP. I need to connect 40 devices to my router by Ethernet. I have set the count of my clients to 100, and my subnet mask is 255.255.255.0. I have ...
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2answers
239 views

How do I use OpenVPN for all traffic other than ports 80 and 22 (inbound and outbound)? [closed]

I use a dynamic DNS service which is sent ip address updates from my router. In router settings, ports 22 and 80 are forwarded to my server at 192.168.1.10. I have a webserver and sshd running on my ...
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1answer
613 views

Configuring a route table to route only one (or range of ip) via a VPN connection

This is my home network configuration: Devices/Pc/Smartphone ---> DD-WRT Router ---> Internet Router ---> Internet/World DD WRT router ip: 192.168.1.1 (default gw is 192.168.1.254) Internet ...
2
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1answer
43 views

Should we accomodate a customer asking us to NAT servers behind new PUBLIC IPs within a VPN?

We're a SaaS provider, setting up a IPSec VPN between our data center and a customer's site so they can directly access their hosted database server from their LAN. Instead of exposing our internal ...
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2answers
293 views

Routing Internet traffic through computer on another subnet

Ubuntu box server has 2 network interfaces: eth0 50.57.71.100 eth1 10.182.161.100 Ubuntu box client has 1 network interface: eth0 10.177.30.100 server and client can already talk to each other ...
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2answers
361 views

How to Reverse Proxy Raw TCP Packets

I am designing a system where remote devices securely send status updates to a central logging server for aggregation. On the server I am using the Redis + Logstash + Elasticsearch solution. The data ...
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2answers
320 views

Redundant routing (active/backup) on linux

I'm currently trying to setup a redundant routing on RHEL 5. The target goal is to have a primary route to a subnet and a backup route to that subnet, to be used only if the gateway of the primary ...
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1answer
41 views

Command “ip rule show” not showing anything

I try to list all routing rules, and as far as I know this should be accomplished with the "ip rule show" command. In my case there is nothing returned (really nothing at all). Why? Could it have to ...
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3answers
3k views

Trying to understand the correct way to create a static route in CentOS, please assist

I've been trying to understand what's the correct way to add a static route on a CentOS 6.x machine. In some forums they say to create a file named route-dev_name (for example route-eth0) with the ...
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2answers
46 views

VPS Routing - packets over 1kb timeout

I have a vps running on a Debian (Squeeze) which started to play funny 3 days ago. I can access it through ssh but all commands that lead to a network traffic of more than 1kb hang. ie: ls on a ...
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2answers
143 views

limit outbound access for an EC2 instance

Our company is in the process to become PCI compliant and one of the requirement is to limit the outbound access of our servers. We have only 1 EC2 instance that falls in the PCI scope and I would ...
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0answers
21 views

Static routing doesn't route correctly

I have Router 1 and Router 2. For R1 I have 1.1.1.1 with /24 mask, for R2 I have 1.1.2.1 with /24 mask. R2 is connected to R1 interface with 1.1.1.2 address. Following image shows my topology ...
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0answers
55 views

VPN, routing and bridging two networks together

I have a site which I can VPN into via a Cisco RV082 10/100 8 Port VPN router. The IP address subnet on the LAN is 192.168.3.0. One Windows machine on this network contains two network cards which ...
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0answers
361 views

Multiple VPN connections on the same Computer at the same Time with the same Subnets

What's the best approach for such scenario? : One machine „GATEWAY” SERVER with configured multiple VPN connections. PC1, PC2, PC3, PC4 are the clients that with the same time wants to connect to ...
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2answers
92 views

Questions regarding my network plan

I'm developing an IT infrastructure room for testing purposes. The overall aim is to create a network, which if fully disconnected from the productive environment and several people can come and ...
2
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1answer
417 views

Inter-VLAN routing: multiple VLANs, only one should be accessible to all. Makes sense?

I am trying to segment our company's network. My main goal is to have many small broadcast domains instead of a gigantic one, so I thought of assigning one VLAN per department. However, we have many ...
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1answer
285 views

pfSense on failover won't route with GW on a completely different subnet

I'm trying to install a pfSense with an IP failover (requirement from online.net) but I can't get the server to route the requests. Last time I got it working with the following commands: route ...
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0answers
118 views

Cisco 1841 - Acting as a PPPoE terminator?

We have 2x Fortigate 200B firewalls that we wish to operate in Active/Active HA mode - though, obviously, they cannot do this with PPPoE/DHCP enabled on the externally facing interfaces. To overcome ...
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2answers
4k views

Setting up a VPN connection to Amazon VPC - routing

I am having some real issues setting up a VPN between out office and AWS VPC. The "tunnels" appear to be up, however I don't know if they are configured correctly. The device I am using is a Netgear ...
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1answer
2k views

Tunneling traffic from eth0 to tun0 (OpenVPN) Ububtu 12.04

Following the steps described here I've managed to configure both the VPN server and client(I can ping both ways). Their respective configuration files are: server: ;local a.b.c.d port 1194 ;proto ...
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0answers
137 views

Load-balancing PPTP connections

I'm trying to load balance two PPTP connections, connected to the same server. I use the following script, but there is no send and receive via PPTP connections. What part am I doing wrong? Are there ...
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0answers
156 views

Connection two subnets behind routers

Task is very peculiar. I ask your help. Do you have any ideas on this subject. We have: 1.First device: |Internet| -> |ASUS RT-N16(firmware dd-wrt) 1| -> |Server base on Ubuntu 1| 2.Second device: ...
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2answers
893 views

Windows static route not working

I have a Server 2008 R2 machine connected to 2 networks with its 2 network cards. LAN 192.168.2.0/24 SAN: 192.168.168.0/24 I have a site-to-site VPN with the following network layout: VPN: ...
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145 views

redirect http traffic through ppp0(vpn tunnel)

So I have this tunnel connection with a VPN on interface ppp0, I need to redirect the traffic through that vpn, of course if I do route add default dev ppp0 it will redirect all the traffic through ...
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1answer
80 views

How did we manage to block connections to our VPS?

For the last week we've been struggling to get connected from inside our network to a VPS where we host some files for users of our product. It's up for everyone else, down for us and not blocked by ...
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1answer
2k views

Setting a static route for a specific network adapter with two network adapters

I have a virtual windows server 2008 r2 with 2 virtual network adapters, one is part of a domain and the other isn't. When I ping to a specific PC that is part of the domain it connects to it through ...
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2answers
195 views

What ISP needs to provide in order to route native IPv6 /56 range to several VLANs

I have a theoretical question. Network topology is like this: ISP <--- eth0 -> Router1 <- eth1 ----+--> VLAN1 '--> VLANx For the sake of ...
2
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1answer
883 views

Strongswan VPN Established but no Packets Routed

I'm setting up a VPN using strongSwan between a Linux instance on an Amazon EC2 instance and a remote network via its Cisco concentrator. I need to route packets from the Linux instance itself a ...
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2k views

PPTP defaultroute. Want to route all traffic via ppp interface

I'm experiencing a problem described here: http://pptpclient.sourceforge.net/howto-diagnosis.phtml#lots_of_data. If I use defaultroute in peer conf or manually add route add default dev ppp0 ...