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

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1answer
32 views

Rewrite source with iptables [closed]

I'm going to route a static IP from a VPS to my OpenWRT router. They are connected with OpenVPN - the server is the 10.8.0.1 and the router the 10.8.0.6. My public IP is 1.1.1.1 for example, and all ...
-1
votes
0answers
14 views

Routing based on source ip + anycast bgp

Client A pings ip X > always server 1 Client B pings ip X > always server 2 Random client pings ip X > always nearest server (1 or 2) Anycast DNS Using BGP Tutorial explains the last ...
2
votes
2answers
53 views

Running own DNS in intranet, how to reach outside DNS from clients

The Scenario: I am creating a Network for 8 Windows 7 Workstations running in a Student Laboratory. They are supposed to browse the internet, but not to be reached from outside their intranet. To ...
2
votes
1answer
92 views

blocked.domain.gstatic.com - Where could this blocking be?

As of this morning we were having serious issues (partially loaded site with no functionality) accessing Google Drive which we use heavily. Other websites seemed to work fine. This is happening on ALL ...
0
votes
0answers
3 views

Alternate route via wifi in mac os [migrated]

Back with routing problems and hours searching through internet did not resolve my issue. Hope I will get some clues here. Here goes the problem: My office has restricted access to internet sites. ...
2
votes
0answers
46 views

Non-local IP for next hop in routing

I'm working with an MPLS network and I am slightly confused about some route entries. Interfaces are (these are fake IPs): eth0 10.10.10.1/24 (LAN) eth1 10.9.9.1/24 (MPLS) eht2 2.2.2.2/24 ...
1
vote
2answers
37 views

Bridging Two VPNs With Routing Tables and OpenVPN

I have a set up that looks like this: + | ...
1
vote
0answers
40 views

NAT for IPSEC access?

Please help to understand if the following configuration can be created. I have IPSEC connection with my customer. It is site2site vpn between customer network and my network 10.102.103.0/28. This ...
4
votes
2answers
505 views

Will blocking port 25 on a router cripple outlook clients?

I work at a small ISP, we manage about 60 buildings with p2p radios and a main cisco router at a central location. Recently we were notified that a phishing domain is associated with one of our IPs. ...
0
votes
1answer
35 views

IP Addresses over IPSec

I've got four hosts setup as follows: I've got an IPSec tunnel via OpenSwan over the internet between Servers B and C. Servers A and D are configured to route traffic to the other via B and C ...
0
votes
1answer
90 views

Is this a botnet? [closed]

I manage networking equipment at a small ISP for 60 highrise buildings. Each building has anywhere from 1 to 60 24 port switches, or some DSLAMs, or some coax gateways, with p2p radios on the roof, ...
0
votes
2answers
24 views

Share /etc/hosts between root machine and containers

I have a Centos machine with OpenVZ containers. For each container I have an alias in /etc/hosts. I would like to be able to share the /etc/hosts between the root and the containers. Is there a way to ...
0
votes
0answers
25 views

Static Route Dual LAN CARD Centos 6

First let me explain the scenario. I have two internet connection (Lease LINE and BroadBand). I have a CENTOS 6 Server which is used for VOIP calling (GOAUTODIAL). Now I want everyone in the LAN to ...
0
votes
1answer
39 views

iptables with sticky forwarding/routing

My iptables is sticking. I have a DNS server behind IPTables and down a NAT'ed OpenVPN pipe. Using tcpdump I see DNS packets hit the outside router but it takes 4 or 5 DNS query attempts before the ...
0
votes
0answers
24 views

How to rout only ftp packets to a particualr interface ppp0 from eth0 in Linux

I need to create an automated script for creating dial up connection and test it using ftp file transfer to a remote server. I have successfully written the script which creates a new dial up ...
1
vote
0answers
68 views

Load Balancing over multiple ISP connections

I have been trying to implement load balance and fail over on a linux machine having multiple interfaces. Currently I am using two ISP lines and I wish to split the network traffic such that both of ...
0
votes
1answer
27 views

block forward traffic targetting another network

I'm learning about a bit more about firewalld and I've been able to create an unsafe network to where I can connect from my internal network, but now, I'm stuck trying to prevent the unsafe network ...
0
votes
1answer
82 views

pfSense Routing a packet out the same interface it arrived on

I have pfSense with one LAN interface which is connected to a switch. All ports on this switch are part of the LAN (VLAN 10). I have access points which are also part of the LAN, they have a static ...
1
vote
2answers
63 views

Dual NICs, dual ISPs, dual FTP servers - Can't keep both connections running. What am I doing wrong?

I have a Windows Server 2003 machine with dual NICs. Until now we've only had a single ISP provisioned by our landlord in the building and have only been using one NIC. Filezilla is the FTP server. ...
1
vote
0answers
38 views

Problem with v6 subnet routing

I have a freebsd machine connecting to my sixxs ayiya-tunnel. As I decided to implement IPv6 in our complete network and not only one interface I got myself a routed /48 from sixxs. I'll use ...
1
vote
1answer
49 views

How can I host multiple websites from the same Windows 2008R2 server?

server running Windows Server 2008 R2 with two NICs and running IIS two Internet connections we can only get one IP address on each Internet connection. two routers we want to serve two websites, ...
1
vote
1answer
29 views

Upgrade network Class vs Virtualized LAN

We operate on one class C network, let's say 192.168.1.0/24 But the problem is we have 262 devices! I propose upgrading the network to a class B. The opposition proposes purchasing new hardware and ...
1
vote
1answer
77 views

HP 5820 Switch in BGP routing

I planning to build an isp network with 2 redundant BGP routers. After a bit of research I found strange that even switches can do BGP, at least that's what it says in their manual. Considering how ...
0
votes
0answers
22 views

Load balancing with http traffic on spacific wan

I have configured Pfsense with two WAN [ WAN1 and WAN2 ] Both the interface are UP and pinging to internet, In my setup WAN1 is default , I am trying to configure in such a way that all http and ...
0
votes
1answer
79 views

Failed to ping through gateway which is not default gateway

I have the following network interface configuration, eth0: 192.168.78.1/24 eth1: 192.168.254.76/24 (Gateway 192.168.254.1) eth2: 192.168.253.131/24 (Gateway 192.168.253.1) where both gateways ...
0
votes
1answer
93 views

iptables on Linux router does not forward DHCP between two LANs

I have an internal network as follows: A Linux system that serves as router, using iptables, with two network cards A client machine A DHCP Server The Router's eth1 is on the same LAN as the ...
0
votes
3answers
74 views

How to isolate Google Gmail SMTP server IPs directly?

I am performing some custom routing with a VPN in the mix that is requiring me to add each Google Gmail SMTP server IP to the routing table so that they pass over another gateway than the VPN's ...
0
votes
1answer
40 views

Network Route Test for DHCP

Is it possible to get a remote client to send a DHCP-style request to a server (which you're on) to test the network routes are open? I can check from server to client, but different ports are used on ...
2
votes
1answer
37 views

VLAN routing query on HP Switch

I have Layer 3 HP switches throughout my organisation. They are set up to perform routing between all the VLANs connected to them, and everything is working. I am pretty proficient with using them, ...
0
votes
1answer
46 views

Static routing on CentOS through managed switch

I am a newbie in networking and I have a question regarding static routing through managed switch. I have a cluster which are connected to a managed switch. One of the node(call it head node) also ...
0
votes
1answer
29 views

Adding static routes to remote networks

Having: My local machine (A) A remote router (B) who knows a remote network/subnet (X) My local machine's is located at the default router's (C) subnet, who know the remote router (B), but has no ...
0
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0answers
53 views

“Network is unreachable” while defining specific route

Tun1 is my VPN tunnel. I don't understand why I get "unreachable" here: # ip route default via 192.168.1.1 dev wlan1 proto static 10.1.0.0/16 via 10.9.0.5 dev tun1 10.9.0.1 via 10.9.0.5 dev tun1 ...
0
votes
0answers
41 views

Having difficulties routing TCP via OSPF (quagga) generated routes

I have two isolated virtual machines (srv-a and srv-b) broadcasting their cluster address (10.0.1.253/32) via OSPF. A third virtual machine (router) with IP forwarding enabled is receiving these ...
0
votes
1answer
40 views

Routing two subnetworks through the same gateway

I have a routing problem I'm not quite sure why I'm not able to solve it. Perhaps I'm thinking about it in the wrong way. On my company every client gets an IP through DHCP, but the admin does not ...
0
votes
0answers
63 views

Cisco 2901 Inbound NAT with local IP overload

Overview We are replacing a Juniper SSG on one of our networks with a Cisco 2901. Everything has so far been quite smooth except some issues have come up with external ports needing to be opened. ...
0
votes
0answers
30 views

L2TP Client Routing

I've setup a VPN Terminator in our DMZ using Windows 2012 R2. It is multi-homed with 2 interfaces: 1 to the DMZ for incoming connections from VPN clients, 1 to our LAN for the tunnelled traffic from ...
0
votes
0answers
34 views

OpenVPN network topology

I'm part of a very small startup and as such I have little money for infrastructure, etc. I need to roll out a OpenVPN service so some employees can VPN in while on-site. To give an indication of ...
0
votes
0answers
147 views

OpenVPN Access Server can't ping it's clients

As a proof of concept, I'm trying to configure an OpenVPN Access Server (AS) with two clients on respective private networks. The goal of the experiment is for the clients to communicate with each ...
0
votes
2answers
83 views

External ip address being treated as local (ARP asking for external IP's address)

I am using a virtual machine with OpenWRT for routing, on a Linux machine (Slackware). I am trying to configure a host only interface (eth0) as the wan interface. eth1 is Ethernet attached as a bridge ...
1
vote
2answers
64 views

Allow only IPSEC outgoing traffic to a port (using IPTABLE?)

Problem: I've a situation where IPSEC server and the target server (Say http server) happens to be the same machine and I need allow ONLY the traffic coming through IPSEC server to have access to a ...
-3
votes
1answer
37 views

What happens if all the ports of router(doing NAT) are occupied ? [closed]

Suppose n computer are connected to a router R .It is doing NAT but suddenly all of its ports are occupied .So when a new computer N tries to connect what would router do means it simple do not ...
1
vote
1answer
226 views

How to configure routing between Azure virtual networks?

I'm designing an Azure environment which will contain multiple virtual networks, and a requirement is for all networks to be connected; a VM in any network should be able to talk to another VM in any ...
0
votes
1answer
84 views

Route all traffic through VPN

So I have one VPS (based on openvz) with VPN (openvpn) up and running. I'm connecting to this setup with laptop (archlinux) and everything seems to be working. Let's say that vps's ip is 192.0.2.4. I ...
0
votes
0answers
39 views

VLAN routing to internet

I am currently setting up a new network and wanted to make sure it is being done in the best way as this is my first time working on a NetVanta 1234P and I am having issues with routing The client I ...
0
votes
0answers
91 views

Setting Up Policy Based Routing For Openvpn

I am trying to run a server that is connected to a vpn. I want to route some of the traffic through the vpn and some of the traffic outside of the vpn. More specifically, I want all traffic to go ...
1
vote
1answer
142 views

Why is my pfSense WAN to Comcast going via 100.99.197.221 which appears to be in Belarus?

We are having internet problems today. We use a Comcast business connection. We have a /29 network from Comcast. We have these IP address: 50.x.x.249, 50.x.x.250, 50.x.x.251, 50.x.x.252, 50.x.x.253 ...
0
votes
1answer
37 views

Nginx to split web traffic to a blog hosted on my domain

At the moment, I am using an Nginx frontend to cache static content for my DotNetNuke based website hosted at the hypotetical address www.mydomain.com, along with some other tasks. In this era of ...
-1
votes
1answer
59 views

How do I write a SRV record for PPTP? [closed]

Hosting a PPTP VPN server on a subdomain, how do I enable the service on the domain with a SRV DNS record? I've already tried: _pptp._tcp.domain.top. 86400 IN SRV 10 10 1723 sub.domain.top. though ...
0
votes
0answers
71 views

Meaning of “scope link” when adding default route via different subnet

I've noticed different behavior when using or not using "0.0.0.0" as the gateway for host routes (and trying to understand that). I'm using CentOS 6.5 and attempt to add a default route via a host ...
1
vote
1answer
59 views

VM with 2 network cards

I have a VM with 2 network interfaces which is running CentOS. One connects to a private network (192.168.6.x) and another to our company wide network. When I try to ssh the private address from a ...