Tagged Questions

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

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-5
votes
1answer
26 views

How do I connect a router on one LAN port to another router on another LAN port on the same switch?

I have the following setup: For non-technical reasons, I am unable to change the physical setup of the devices. What I'd like to do is have router 2 (a wireless router) act as a wireless AP that ...
0
votes
0answers
29 views

Redirect to another gateway in same subnet / route to another router in same subnet

There's this network: The computer 192.168.10.4 wants to access a VPS server which has an OpenVPN server running on it, configured to use the subnet 192.168.20.0/24. The computer's subnet also ...
0
votes
1answer
11 views

OpenVPN: forward client's LAN to the VPN

My current setup involves an openVPN server with a single network interface and a client on another network that acts as router for a specific LAN. My goal is to enable forwarding of LAN traffic ...
1
vote
2answers
26 views

Why isn't my static route applying?

I'm migrating one of my services to a new public facing IP and I'm at a loss as to why the recently added route isn't functioning. This is a Server 2008 R2 box. I've covered several other questions - ...
-3
votes
0answers
19 views

Network access, routing issue

My ISP is providing me 3 IP addresses over a single network cable each assigned to a MAC. The main network cable is connected to a switch. 2PCs and 1 Router are connected to that switch. PC1 is ...
0
votes
0answers
29 views

Neighbor solicitation or advertisement not forwarded between interfaces [migrated]

I have Ubuntu 12.04 installed in a VirtualBox VM on a Windows 8 host computer. Windows 8 had a hosted (wireless) network to which I can connect with my Android phone. The eth0 interface of my VM is ...
-1
votes
0answers
31 views

OpenVPN not routing to other public IPs on the OpenVPN server

This is similar to the issue addressed at OpenVPN and routing . My server runs both a racoon-based L2TP/PPTP VPN service and an OpenVPN service. The racoon service assigns addresses in the ...
0
votes
0answers
22 views

Linux: routing within 2 internal networks

We have a network that contains one gateway server with 3 network interfaces: eth0: (global IP) eth1: (internal IP 192.168.0.0/24) ib0: (internal IP 10.2.2.0/24) The other servers in the network ...
1
vote
0answers
17 views

Forward single port between subnets on dd-wrt router

I have a DD-WRT router with two subnets, 192.168.0.0/24 and 192.168.8.0/24. The latter is used for a 'guest' WiFi network. Traffic between subnets is filtered using iptables. What I would like to ...
-3
votes
1answer
22 views

packets coming from local interface [on hold]

Hi I was having trouble running nmap scans from my vps as root but not from my standard user so I started tcpdump and then ran a scan from each user, from the standard user my packets where ...
0
votes
0answers
44 views
+50

Routing Traffic to Subnet through OpenVPN Client Tunnel

I have a Shorewall powered masquerading router: eth0: DHCP client, external interface (net zone) eth1: static, internal interface (loc zone) Now I want to add an OpenVPN client that creates a TUN ...
0
votes
1answer
13 views

Weird routing when accesing local service on OpenVPN server

I'm currently having a very restrictive internet access, basicly, anything that doesn't use port 22, 443 or 80 are routed through a different network who has a 1 seconde ping and 60% packet loss. ...
1
vote
1answer
26 views

Server 2008 Static Routing (Terminal Services) Multiple Gateways/Routers

We have two internet connections, both on their own routers. Router 1: 192.168.0.1 / 255.255.255.0 Router 2: 192.168.0.2 / 255.255.255.0 Our terminal server has a single NIC, 192.168.0.3 / ...
-1
votes
1answer
24 views

Rewrite source with iptables

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
9 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
42 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
55 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
40 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 ...
-2
votes
0answers
31 views

NGINX Adding Duplicate Query Parameters

I am running NGINX 1.4.1 and have the following setup: I am not allowing WWW server { listen 80; client_max_body_size 4M; server_name example.com; rewrite ^(.*)$ ...
1
vote
2answers
29 views

Bridging Two VPNs With Routing Tables and OpenVPN

I have a set up that looks like this: + | ...
1
vote
0answers
36 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
490 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
25 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
85 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
20 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
16 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
30 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
16 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
53 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
0answers
11 views

Dynamic Routes at Home Router [migrated]

I am currently using a linux box as my home router (PPPoE to my ISP and NAT, etc). Some websites are blocked in my country (don't say the name out loud), so I have another PPP in my router to a VPN ...
0
votes
1answer
20 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
52 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
53 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
34 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
42 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
27 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
71 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
17 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
67 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
58 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
64 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
39 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
36 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
43 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
22 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
votes
0answers
48 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
30 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
36 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
35 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. ...