-1
votes
0answers
28 views

3 network interface and 2 subnets (same ip) routing

System description 1 GNU/Linux Box with Arch Linux OS 3 network interfaces 1 for WAN network 2 for every LAN LAN2 and LAN3 description On every LAN we have 3 devices main 192.168.2.2, second ...
0
votes
0answers
22 views

OWPING communicating between tcp and tcp6

I am trying to deploy the perfSonar toolkit on my network. I'm testing the one-way ping tool on a local subnet, which contains the monitoring station (in this case, a laptop) and a host ( a cubox-i ...
0
votes
3answers
218 views

Routing between two subnets using a Linux box with two NICs

I have a Linux box with two NICs, each connected to a different LAN: Network A: 192.168.1.0 255.255.255.0 Network B: 192.168.2.0 255.255.255.0 The routers are: 192.168.1.1 192.168.2.1 Linux NICs are ...
0
votes
1answer
2k views

Proxmox - single public ip with multiple vms, openvz containers work, kvm's don't have a route

Currently I only have a /30 block (1 usable IP) (I just ordered a /28 for 13 usable publics, waiting) I just installed proxmox, set up a few virtual containers. Port forwarded the necessary ...
0
votes
2answers
89 views

Setting exceptions to a subnet route

I have a pretty simple standard routing table on my linux box: default via 192.168.1.1 dev eth0 proto static 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.162 metric 1 Now I ...
0
votes
2answers
128 views

Linux route command. Two gatways on the same subnet range

I have a Linux box with two interfaces. eth0 has ip 192.168.71.82/255.255.252.0 eth1 has ip 192.168.4.2/255.255.255.0 I need all traffic for subnets 192.168.4.0/24 192.168.3.0/24 192.168.2.0/24 to ...
1
vote
1answer
114 views

VPNs and subnets

I have built my own router on a machine with 2 NICs, running Debian. The machine sees my public IP address on one side, and the internal network (192.168.42.0/24) on the other. I am trying to set up ...
1
vote
1answer
151 views

Different Logical Subnet on same Physical network cause Linux Connectivity Issues

We have two Linux CentOS hosts, A and B. A = 19x.2xx.6.4 (/24) B = 19x.2xx.7.4 (/24) Both these hosts are on the same physical switch. The reason why they are on different logical networks is ...
0
votes
1answer
96 views

A NAT Experiment

I have a Linux box that am using as a router. The box's 'WAN' connection is actually another LAN (the primary LAN). I am trying to use my box/router to create another LAN (the secondary LAN). The ...
2
votes
3answers
2k views

multiple physical interfaces with IPs on the same subnet

I have a linux box with 9 NICs on it, and I want eight of them to have unique addresses on the same subnet, e.g.: ifconfig eth1 192.168.123.1 netmask 255.255.0.0 ifconfig eth2 192.168.123.2 netmask ...
1
vote
0answers
171 views

Connect two networks

Connecting two different offices with a wireless link and linux boxes. Hardware: 2 CISCO RV42, 2 Dual Homed Linux Boxes running debian, 2 2Wire and 2 AirMax 5 Configuration is: Office A LAN A ...
2
votes
2answers
5k views

Connecting two subnets using an Ubuntu 10.04 LTS as a router

This has been bothering me for a couple of days, I have two subnets: 192.168.1.0/24 : This is the subnet used by my ISP/router. The gateway to the WAN is 192.168.1.1 192.168.2.0/24 : This is a ...
0
votes
2answers
334 views

No route to host in different subnet

My new employer has two subnets, x.y.74.* (with default gateway x.y.74.33) and x.y.75.* (with default gateway x.y.75.1). The .75.* subnet is reserved for servers, i.e. machines that offer services to ...
1
vote
1answer
889 views

Linux route to different subnet

Bit confused over how to handle a likely simple routing issue. I VPN into my Cisco ASA on 10.1.x.x subnet. Now, I would like to not only interact with private 10.1.x.x, but also with dmz on ...
2
votes
1answer
136 views

OpenVPN network sharing

For some hours I'm already trying to setup a virtual private network between two physical locations (Location A, 192.168.1.0/24), and (Location B, 192.168.2.0/24). I am forced to use a tunnel instead ...
2
votes
4answers
467 views

2 servers cannot see each other in internal subnet (192.168.1.10)

I have a few servers in one rack. They all have 2 network interfaces eth0 and eth1. On all, eth0 has a public IP address assigned which works well. I'm setting up a private subnet on the second eth1 ...
2
votes
1answer
5k views

Configuring a DHCP server to serve multiple subnets on the same VLAN

I have a VLAN composed of multiple subnets, and I would like to use DHCP to centralize IP address designation. The DHCP server (100.100.25.88) is a Debian machine on the subnet 100.100.25.64/27. I ...
0
votes
1answer
602 views

Samba share cannot be accessed from windows PC on a different subnet

I have set up a linux (CentOS 5) box with a samba share on a large network. The network has 2 subnets, one on 192.168/16 and one on 172.18/16. The server lives on the 172.18/16 subnet. I can ping ...
2
votes
4answers
104 views

Intermittently uncommunicative subnets

Last week proved me a veritable Cassandra: I've always said that it's a bad idea to have only one firewall/router, without a backup or failover. And thus our Cisco PIX went haywire, refusing to route ...
2
votes
3answers
125 views

linux, networking, setting up subnet

I have a group of servers (debian linux boxes) and each gets a public IP off eth0. Lots of data is processed and passed between the servers. I'd like to create a subnet between the servers off each ...
0
votes
1answer
328 views

Routing a subnet to global network on Linux

I have a host A which is connected to a global network and a local subnet. It's IPs are 77.37.194.100 and 10.1.1.1 respectively. There's server B (77.37.195.255) on the global network. Another box C ...
5
votes
4answers
2k views

Linux Command line tool to work with netmasks / CIDR notation

I'm terrible at working out network subnets in my head. Is there some command line tool for linux (ubuntu packages a plus), that lets me put in 255.255.255.224 and it'll tell me that is a /27?