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1answer
314 views

Sonicwall firewalls and redundancy of route based vpns

I am attempting to configure a route based vpn on a Sonicwall TZ device. The datacenter has two public IPs on different subnets (A and B). The remote office has 1 public ip (C). When I configure ...
2
votes
2answers
10k views

How can I configure openvpn server without push default gateway?

I need configure my openvpn server to provide some LAN resources, but I don't want route all traffic for my clients. Here is my sample network description: My LAN is 192.168.1.0/24. Openvpn network ...
0
votes
1answer
1k views

route traffic to different interface, from port

I got three gateways: 192.168.10.1 on eth0 (default), 192.168.100.1 on eth0:0 192.168.101.1 on eth0:1 I'm trying to make my computer decide on which to use, from the request port. (request comes ...
0
votes
1answer
158 views

Route local traffic to ip1:port to extern ip2:port

I have a service setup that redirects after a succesfull login (Couchbase), but the IP it transfers to is an local one, where the client that is connecting to cannot reach. How can I setup iptables ...
0
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2answers
3k views

How to route UDP traffic from one public IP (linux) to another public IP(Windows)

I want to prevent direct access of my Windows Machine and want to expose some programs running on it via my Linux Machine (which again is accessible by a Public IP). Is there a way where-in I can ...
1
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2answers
681 views

Ubuntu server acting as a two interface router

I'm trying to set up a squid proxy server using Ubuntu server 12.04 I'm very new to Ubuntu but I have managed to get some simple things done. I bought a second PCI interface and have managed to ...
4
votes
4answers
4k views

How can I force all internet traffic over a PPTP VPN but still allow local lan access?

I have a server running Linux Mint 12 that I want to keep connected to a PPTP VPN all the time. The VPN server is pretty reliable, but it drops on occasion so I just want to make it so all internet ...
2
votes
2answers
564 views

Iptables string

I have an iptables rule like this: iptables -t nat -I PREROUTING -p tcp --dport 80 -s 192.168.1.2 -j DNAT --to-destination 192.168.1.1:80 it works perfectly.. but I want to redirect only for one ...
0
votes
1answer
741 views

Windows route add error

Windows Server 2003 Standard Edition C:\Documents and Settings\Administrator>route print IPv4 Route Table Interface List 0x1 ........................... MS TCP Loopback interface 0x10003 ...00 14 ...
0
votes
2answers
929 views

Linux as a gateway (no NAT)

I'm trying to configure a linux server as a gateway/router, but I can't get it to work, and all information I've managed to find is NAT-related. I have a public IP block for the gateway and devices ...
0
votes
2answers
361 views

connecting to a network using route command

I have a computer with an external IP(192.168.223.220) and also an internal address (10.1.1.20) in order to connect to some servers that don't have external addresses only 10.1.1.xx . in order to ...
1
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2answers
329 views

Can't route specific subnet thru VPN in ubuntu

I'm having issues routing traffic thru VPN. Here's my setup I have 3 hosts, let's call them A, B and Z B and Z have a VPN connection in the 10.10.10.x SUBNET A and B have a direct connection in the ...
4
votes
1answer
630 views

Listing the routing table takes long time to complete

When I print routes defined on my computer using route, it takes about 5 to 20 seconds to complete. Why does it take so much time? With VPN enabled: $ time sudo route Kernel IP routing table (...) ...
0
votes
0answers
958 views

Can't ping Ip over bridge

I'm unable to ping another host over a bridge I created, I can't see the error -.- It's a remote machine running debian stable with some backports for which I want to set up DHCP on the new Subnet ...
0
votes
2answers
60 views

4 nodes to the internet, everything works except 3rd node

I have 4 nodes to the internet: Internet <--> Node A <--> Node B <--> Node C <--> Node D Node A: main gateway, manage internet Node B: gateway/tunnel to node C Node C: ...
4
votes
3answers
1k views

How to delete a route on a specific interface?

When I start a VPN connection, a new default route is added on the utun0 interface: Destination Gateway Flags Refs Use Netif Expire default utun0 ...
2
votes
2answers
6k 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 ...
1
vote
0answers
329 views

Route VPN gateway traffic via tun0

On my Linux box, I got a tun0 dev by ipip like: tun0 Link encap:IPIP Tunnel HWaddr inet addr:10.10.10.2 P-t-P:10.10.10.1 Mask:255.255.255.255 and I running a ipsec vpn ...
1
vote
2answers
94 views

LAN to LAN VPN connectivity issues

I have a route-based VPN with limited functionality. My computers on site-A can ping one workstation on site-B, it happens to be the only workstation that is not part of the domain that has been ...
1
vote
4answers
359 views

Different Routes For The Same DNS

I don't know the right term for this concept. But basically, I just want to reroute internal traffic to go directly to a server within the network instead of going around the internet. The domain have ...
3
votes
3answers
16k views

howto only tunnel specific hosts route through openvpn client on tomato [closed]

I am relatively newbie in networking world although I did coding and know some sysadmin background for a long time. and here I'm only one step from my destination. The whole picture is : at home I ...
0
votes
3answers
5k views

How to reach a device on a different subnet?

I have what may seem to be a basic question about routing, but I ask it because I am not sure where to start. I have a simple network setup: Client1, Win7, 192.168.0.50, default gateway is set as ...
2
votes
3answers
100 views

what's the difference between ICMP prohibited ICMP unreachable?

If I want to forbid a route to response a network, should I use ip route add unreachable 209.10.26.51 or ip route add prohibit 209.10.26.51?
3
votes
2answers
241 views

Is it just me or is my node down?

I find the www.doj.me very useful. I am looking for something like that but specifically for BGP Nodes. I want to write a script that tells the users if our Internet backbone is down, if if yes which ...
1
vote
2answers
490 views

The ping response time doesn't reflect the real network response time

I encountered a weird problem that the response time returned by ping is almost fixed at 98ms. Either I ping the gateway, or I ping a local host or a internet host. The response time is always ...
2
votes
1answer
356 views

Windows 7 routing traffic through the gateway for local addresses

Windows is adding a route for a local address (10.0.0.90 - my fileserver) with a gateway of (10.0.0.138 - this is my gateway), the gateway only has a 100Mbs link so all of my fileserver bound traffic ...
2
votes
1answer
1k views

Under what circumstances will Linux ignore the route table when choosing the MAC address for an outbound frame?

While debugging a problem with the networking configuration for a set of virtual machines running under KVM, I discovered a circumstance where the kernel in the guest VM has decided to stamp the ...
0
votes
1answer
2k views

Why is a ping response being sent to the wrong gateway?

In a previous question, I was trying to determine why my OpenVPN clients could not ping the server LAN, even though the server LAN could ping the clients. Having investigated this further, I ...
0
votes
1answer
1k views

using a gre tunnel as default route

I have two private networks (A, B) that connects via another company's private network (C). Network A has internet access. I want to make a tunnel between B and A that goes through C. Then network B ...
0
votes
1answer
737 views

Windows 7 + IPSec: Force all remote traffic through VPN

I have set up a VPN connection to an remote L2TP/IPSec VPN server, which works fine. Now i like to ensure that all remote traffic is being routed through this VPN, so if the VPN connection drops, no ...
2
votes
3answers
2k views

Route all wlan0 traffic over tun0

I'm looking for a way to route all wlan0 traffic (tcp and udp) over tun0 (openvpn). However, all other traffic originating from the device itself should not be routed through tun0. I'm guessing this ...
2
votes
1answer
3k views

Routing OpenVPN tunnel in via public interface and out via NAT'd interface (to internet)

I hope someone can help... I want to Configure OpenVPN-AS (i.e. OpenVPN Access Server, NOT OpenVPN) to work on my VPS. The VPS is a KVM running Ubunto 10.04 LTS, with a very vanilla configuration. ...
1
vote
2answers
5k views

What does this linux command mean “route add -net 224.0.0.0 netmask 240.0.0.0 eth0”

Could somebody explain what exactly this command means in relation to transmitting and receiving multicast traffic route add -net 224.0.0.0 netmask 240.0.0.0 eth0
1
vote
1answer
344 views

How do I setup a routing rules to allow https traffic

This is about a clearOS installation. eth0 = external interface (dhcp Internet) eth1 = internal lan, static 192.168.0.10 eth2 = dmz The problem is, after initial installation, I was able to ...
1
vote
1answer
504 views

iptables and virtual machines of KVM, no ping, no ssh from VMs

Hi everyone :) I have two virtual machines KVM. I did two alias to eth0 - eth0:0 and eth0:1 and put them on an external IPs (eth0:0 - 89.114.122.3, eth0:1 - 89.114.122.4)​​. Now the problem is: ...
0
votes
1answer
820 views

iptables and virtual machines of KVM, external ip

Hi everyone :) In general, I'm still struggling with the virtual machine KVM. I did two alias to eth0 - eth0:0 and eth0:1 and put them on an external IPs (eth0:0 - 89.114.122.3, eth0:1 - ...
1
vote
2answers
200 views

removing static route from linux doesn't disconnect session

I want to test "connection retry" with remote application server. For this, I am using route method, wherein I remove static route from my linux server and check if the connectivity goes down or not. ...
2
votes
1answer
88 views

How can I get the remote machine with Windows Server 2008 after “route /f” executed on it?

Here is the thing, I had made a stupid mistake yesterday. I run "route /f" on a remote machine with Windows Server 2008, and this command cleared the routing tables, including the default route, which ...
0
votes
1answer
2k views

Static route issue on Windows Server 2008 R2

There's a virtual machine with Windows Server 2008 R2 installed. There are two NICs connected to it: PROD & BUP. The BUP interface is configured without default gateway. After adding static route ...
1
vote
2answers
842 views

port redirection through a VPN

I would like redirect my tcp traffic to IRC throught a VPN. I mark the packets with iptables and create a new route for this packets: echo 1 > /proc/sys/net/ipv4/ip_forward echo 0 > ...
5
votes
1answer
419 views

CCNA Case Study - Static Routes

I'm currently doing the CCNA (Cisco Certified Network Associate) course at school and am a bit stuck on my case study, so I was wondering if anyone could help. I have the following topology: I ...
1
vote
2answers
2k views

How to remove route with IP?

Used to ban some flood-bots with route add -host $ip reject But couple of 'good' IPs were banned as well. My question is stupid (but I've searched and found no good solution (all were large and/or ...
1
vote
2answers
378 views

How do you find current internet network interface?

How do I find the network interface that's connected to the Internet? This machine could typically be connected via {eth0,eth1,usb0,wlan0}. The best I could think of is: sudo route | grep default | ...
16
votes
5answers
5k views

Use IPtables or null route for blacklisting about 1 million IP addresses?

I've come across a situation where a client needs to blacklist a set of just under 1 million individual IP addresses (no subnets), and network performance is a concern. While I would conjecture that ...
0
votes
1answer
89 views

Internet Backup if DSL & Cable Fail [closed]

We have a T1, a DSL Line and a cable modem in each building to assure that we can connect to the internet in case one fails. However during the latest power outage we also lost all of them and were ...
1
vote
1answer
448 views

Why specific rouing rule is added after VPN connection is setup on Linux?

After VPN connection is setup the following routing rule is added by default: vpn_server_ip previous_default_gateway This rule appears useless for me. Why it is added? Note: VPN connection is ...
0
votes
1answer
4k views

How to make LAN PCs (Windows) accessible from a SonicWALL L2TP VPN connection

We have several LAN devices connected via a physical wired network to a SonicWALL TZ210 on subnet 192.168.2.0/24. Several of those devices are assigned DHCP addresses in the range 192.168.2.100 to ...
0
votes
1answer
191 views

Manage the Win2008 routing table

I have a networking issue As I have now two network cards and each one should connect to a specific network; one should be used to connect to the internet and the other one for intranet. I want to ...
1
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2answers
164 views

Network configuration

please see the network map from http://i.stack.imgur.com/HqT7h.jpg I want to connect to network3 from network1 but i want to connect by network2! I have a PC which has Ubuntu 11.04 and it can ...
0
votes
1answer
394 views

centos route problems, can't connect to network

I have an issue with CentOS route... maybe someone can help me to figure it out, how to simple configure route... I have an dedicated ip adress e.g. 13.97.82.85 my netmask is 255.255.255.192 and gw ...