0
votes
0answers
26 views

network inbound from other subnets refused to server A, Server A can go outbound to internal networks, but not internet

I have a RHEL 6 server with 4 NICs on 192.168.2.[30-33]/24 Set with DHCP reservations via infoblox, I have checked and the MACs all match up. ifconfig shows /24 for every netmask, and the routing ...
1
vote
0answers
88 views

Route two public (ISP assigned) subnets on 'outside' interface of Cisco ASA 5510

We've got a Cisco ASA 5510 that sits on our edge and acts as the PPPoE endpoint for a fibre connection. The fibre connection came with a static IP, which is assigned via PPPoE, and gets picked up by ...
1
vote
0answers
52 views

Route public subnet to client location

Due to the fact that my ISP introduced CGN/DSLite and I still need public IPv4 addresses, I was thinking about tunneling an unused /29 that I own from my server to my local Linux box. After doing ...
0
votes
2answers
91 views

VMware vSphere as gateway to internal network

I'm looking for info if it's possible for vSphere to act as gateway from my external network to an internal network. Basically: The vSphere host is on a 10.0.0.0/24 which is my "external" network. ...
1
vote
2answers
286 views

How can I use a gateway on another subnet?

I'm trying my first attempts at routing and hitting the "Network is unreachable" message. My goal is to successfully ping frome one machine (subnet 10.56.34.0) to a machine on a completely ...
1
vote
1answer
249 views

Routing between 2 different subnets on 2 different interfaces in SonicOS

I'm having a bit of a problem allowing traffic between two of my subnets. Here's the structure I've built. The X0 interface has our windows server on it and it handles DHCP/DNS, etc. X1 has the WAN ...
0
votes
3answers
536 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 ...
1
vote
2answers
177 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 ...
0
votes
2answers
91 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
votes
1answer
301 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 ...
0
votes
0answers
36 views

simple subnetting, regarding vpn

i am using 2 cisco rv180 to build up a ipsec tunnel. thats working. but i cant get any packets trough the tunnel. first i was using: local: 10.0.0.X 255.0.0.0 remote 10.0.1.x 255.0.0.0 but 0 ...
-1
votes
1answer
135 views

How to connect devices behind Comcast router/modem with devices behind wireless router [closed]

I know this is going to seem like a simple solution but I have been unable to find a clear answer through Google. Simple office setup: I have a Comcast modem/router that has 4 hard wired ports. In ...
0
votes
1answer
261 views

Proxmox 31 + KVM routing + IP subnet + csf

We have proxmox 3.1 server in netzner with routuing network and IP subnet block. We want to implement csf firewall without interfering the traffic of the KVM VMs, what would be the easiest way? We ...
2
votes
2answers
153 views

How to access devices with static IPs on different subnet than router?

I have a SonicWall TZ100, firmware SonicOS Enhanced 5.8.1.13, with a static subnet of 10.0.6.0/24 on X0. Ports X2-X4 are port shielded to X0. On ports X3 and X4 I have two devices that were moved from ...
0
votes
1answer
91 views

Sonicwall Routing Subnets

I have a Sonicwall TZ105W that has a Synology NAS (10.0.0.8) on the LAN zone (10.0.2.0/24). The NAS provides a VPN service that is delegated a 10.0.2.0/24 network. How can I set up routing on the ...
1
vote
1answer
1k views

CentOS - IPTables - Allow nodes on subnet full access

I am using linode.com and they provide the ability to assign a private IP to each vps. What I am trying to do is setup each node's firewall to allow access from other nodes on the network, but I don't ...
0
votes
2answers
97 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
1answer
126 views

How to configure network with two routers?

Is it possible to have two routers in the public accessible subnet? ->forward all traffic for [177.x.x.{3,5,7}] Internet --- [177.x.x.1] ...
0
votes
1answer
123 views

VPN with overlapping subnets?

We have a number of site to site VPN tunnels which each have a their own consecutive subnet, for example: Branch 1 - 192.168.1.0/24 Branch 2 - 192.168.2.0/24 Branch 3 - 192.168.3.0/24 Branch 4 - ...
2
votes
2answers
202 views

Use a dedicated subnet to connect all routers/firewalls?

I have a couple router/firewall boxes (pfSense, TMG 2010, ISA 2006) on my network that are stateful. Right now they all have an interface on the same subnet as most end user devices and servers. I ...
0
votes
1answer
155 views

Using a CIDR range as a Routed Subnet?

I have a /29 subnet assigned by my ISP, with an SonicWALL office router and a Cisco voice router hooked up to a 'net-rail' of sorts with untagged VLAN switch ports connecting my ISP router's output ...
0
votes
3answers
183 views

textbook CIDR subnet problems, the real world, and Cisco ip route [duplicate]

Assuming CIDR and classless addressing, the CCNA books I'm reading say Pearson 640-822 official cert guide 2012, pgs 403-404: According to their method S = P - N (subnet, prefix, host bits ...
1
vote
1answer
95 views

Can I split my colo WAN subnet? /27

I recently started colocating at a datacenter, and they provided me with a /27 subnet, let's say 192.0.2.112/27 , this translates to usable IP's .96 to .127. Because of a requirement in my network, ...
0
votes
3answers
441 views

Wireshark Promiscuous Mode and multiple Subnets

Is it possible to Sniff traffic with Wireshark where the source IP and Destination IP are on different subnets (of the same network) and neither of them are your IP? NIC is Intel 82579LM.
2
votes
1answer
2k views

Routing between two routers with static routes

I have a Draytek 3200 router and a pfsense rackmount router that I am trying to get to route to each other. I have a subnet on each router and a subnet for the link between, as shown here: As it ...
0
votes
0answers
173 views

One dns server in different subnets

I have installed a small Linux server; the server is in a different subnet as the internet hosts. I added a route to my nat router to create a connection between both subnets. In both subnets I use an ...
1
vote
2answers
6k views

Sonicwall routing between multiple subnets on multiple interfaces

As shown by the network diagram below, I have two completely separate networks. One is being managed by a Sonicwall NSA 220, the other by some other router (the brand is not important). My goal is to ...
4
votes
2answers
163 views

Is this IPv4 and subnet combination public or private? [duplicate]

Possible Duplicate: How does IPv4 Subnetting Work? I thought I understood this but I am momentarily confused. Here is an example: Are all IPv4 addresses from 192.168.0.0 to 192.168.255.255 ...
2
votes
2answers
264 views

How to use 2 subnets on one network

I have some servers at a colocation. They've given us an IP range, subnet and gateway. Now we have run out of IP addresses and they've given us a new range of IPs but with a different subnet and ...
1
vote
1answer
328 views

Multicast in private LAN with different subnets

after i read Multicast IP Addresses and Multicast accross the subnets I am confused. Configuration: I have two devices in the same network. They may not be in the same Subnet, but ...
0
votes
1answer
474 views

Reach pc in the same network but a different subnet

PC 1 in subnet - 192.168.1.x PC 2 in subnet - 192.168.2.x Is it possible to access one pc from the other by its IP address without special router config? related: How to reach a device on a ...
0
votes
1answer
97 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
1answer
880 views

Routing between subnets on different vlans connected by a router/firewall

I have two networks that I'd like to connect with a router/firewall to filter traffic between the two. One network is on a public subnet, let's say 64.22.12.192/27 and the other network is on a ...
1
vote
1answer
243 views

IPTABLE & IP-routed netwok solution for HOST net and VM's subnet

I've got ProxmoxVE2.1 ruled KVM node on Debian and bunch of VM's guests machine. That is how my networking looks like: # network interface settings auto lo iface lo inet loopback # device: eth0 auto ...
0
votes
2answers
981 views

WAN and LAN setup for IPv6

We just got a IPv6 /48 range (a gateway and an IP address) for our company, but I'm unsure about how to set it up. We use FreeBSD 8.4 (pfSense 2.1) as a router/firewall. Currently we have IPv4 setup ...
0
votes
1answer
438 views

OpenVPN subnet routing on openSuSE

First off: I have looked all over for a solution to this, but couldn't find anything. How can I make OpenVPN's subnet accessible to my LAN? BACKGROUND INFORMATION: I have an openSUSE 12.1 box that ...
1
vote
1answer
230 views

How to route two subnets to the internet via a linux box acting as router and proxy

I have a linux box that acts as router, DHCP server, and proxy. On my LAN side I need two subnets to have enough IPs: 192.168.100.0 - 192.168.101.255 - is the range I need. Both subnets must be able ...
-2
votes
2answers
193 views

Network traffic across different (sub-)nets, how does the route get determined? [duplicate]

Possible Duplicate: How does Subnetting Work? Imagine there is a small network with 2 subnets. Both of the subnets have their own switch (means: all machines on that subnet share the same ...
1
vote
1answer
430 views

Multiple subnets on a single interface in EC2

I'm currently working on setting up a QA environment on EC2 along side our production environment. All of the instances are within a VPC setup, with the following subnets: 10.0.83.0/24 - Production ...
0
votes
2answers
108 views

Is auto-detection of routers on the local network possible?

Suppose one has configured a bog standard Ethernet connection - there is an IPv4 address, a subnet specification, a default route, even nameservers in resolv.conf, static routes everywhere - is it ...
0
votes
1answer
839 views

Public subnet configuration on a Cisco ASA 5520

I'm trying to set up a Cisco ASA 5520 as the main entry point for our datacenter setup. This setup includes: Three private networks (management, SAN and backup) that are used in a cloud server ...
-1
votes
1answer
366 views

how to communicate in typical router switch router scenario?

I'm learning routing using packet tracer simulation and I think this is a very commun scenario: let's say pc4 is the server... why I can't ping from PC1 to 192.168.2.253 (router1) but I can ping ...
2
votes
0answers
517 views

Connectivity issues with dual NIC machine in EC2

I'm trying to get some servers set up in EC2 in a Virtual Private Cloud. To do this, I have two subnets: 10.0.42.0/24 - Public subnet 10.0.83.0/24 - Private subnet To bridge these two, I have a ...
3
votes
2answers
1k views

How ISPs will assign IPs /subnets for end users in IPv6

Consider two scenarios: The end user has a simple computer, dual-stack The end user has a LAN behind a dual-stack router How will ISPs differentiate each one of these kind of users in IPv6? An ...
2
votes
1answer
149 views

Selective Routing Between Subnets

I have a configuration with two subnets. For this example I will call them 192.168.1.128/26 (128) and 192.168.1.64/26 (64). The 64 subnet contains all the internal devices that guests should not be ...
6
votes
1answer
775 views

If I change a router's subnet mask to one that includes the old one, will the hosts with the old configuration still work?

Currently I have a router that is addressed as 10.2.1.1 on a 10.2.1.0/24 network. All of my hosts have default gateway 10.2.1.1 with mask 255.255.255.0. I want to know: if I change my router to ...
0
votes
2answers
451 views

Default Route Configuration by IP Range

I have a scenario where I need responses on a certain range of addresses to go out through one default route and another to go out through another but don't know how to setup the route add commands to ...
-2
votes
3answers
2k views

Packets dropped due to NAT? Firewall? Unroutable private IP addresses?

Preliminary note This question is out of academic interest. I know how to work around the limitation. I use this setup to control access from one subnet to the other on IP level which works great so I ...
0
votes
1answer
113 views

Overcoming same private IP addresses, different subnets

I am preparing for migration to VMWare ESXi. Part of this involves P2V a large number of physical servers. Since a lot of our applications depend on the IP addresses to stay the same (i.e. they ...
1
vote
2answers
176 views

Subnetting IPv6 addresses/routes

I would like to subnet the default IPv6 route into 2 network routes. The original default route was: default via fe80::218:74ff:fe27:9640 dev eth0 proto kernel metric 1024 I tried adding the ...