A route is the path through the network packets take in order to reach their destinations. The route command lets the user view and modify the IP routing table

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iptables --set-mark - Route diferent ports through different interfaces

Short story, 3 interfaces, eth0 (LAN), eth1(ADSL), eth2(4G). eth0 -> eth1: Works (ports 80, 443, 4070) eth0 -> eth2: Doesn't happen This is a graphical representation of the idea: Port 80 & ...
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1answer
22k views

Set persistent routing table on Debian

I have modified my routing table by deleting one rule, and adding two new rules for my second interface eth1: route del -net 10.1.2.0 netmask 255.255.255.0 route add -host 10.1.2.51 eth1 route add ...
6
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1answer
623 views

Route VPN traffic through socks proxy [closed]

There is no way to set proxy on an unrooted Android, but there is an option to connect to VPN. In my network VPN connection is not allowed! so I am looking for a way to run a local VPN server on my ...
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874 views

Route and “e” flag

k# route -6 Destination Next Hop Flag Met Ref Use If ::/0 fe80::8001 UGDAe 1024 0 0 eth0 [...] What does flag "e" mean?
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3answers
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how to ping & use specific network card

i have 3 network cards , 1 Lan (wired) , 1 wireless network card & 1 is wireless usb how do i ping from specific network card ? & how do i use specific network card for specific ...
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What is the difference between `/sbin/ip route` and `/sbin/route`?

Linux comes with two utilities /sbin/route /sbin/ip route What is the difference between the two and what is the rule of thumb to use when you decide which one of the two you should use? I know ...
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2answers
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how to set what route would be added when bringing interface up

I have one two interfaces on one machine, one is the Internet connection that get its IP from a DHCP, no problem. The other interface (eth1) is to local machines, and it has the gateway 192.168.3.1 ...
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3answers
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Why can't I ping Google?

I can't ping google.com (unknown host). But I can ping IP addresses. I tried to ping the IP address of Google but it doesn't work. resolv.conf nameserver 8.8.8.8 nameserver 209.139.209.33 ...
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1answer
4k views

What is the GNU/Linux equivalent of BSD's “route get …”?

The BSD route command has a feature that will show what route will be selected for a given host. For example: /Users/mhaase $ route get google.com route to: iad23s07-in-f8.1e100.net destination: ...
4
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1answer
4k views

How do I route traffic through specific interface for a specific process

I have a script that runs from cron every 15 minutes. The script is meant to ping my DNS server to update a dynamically changing IP. I want this script to ping through the wlan interface and not the ...
4
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1answer
2k views

How to use two gateways with the same IP address?

I have to configure a NAT and manually split internet traffic between two gateways which are connected to a Linux box. There was no problem if each gateway has a specific IP address. I can do this by ...
4
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1answer
81 views

route added, but shows inverse ip

Using xubuntu... i'm trying to add a route in my work laptop, and so i do route add -host 212.18.178.207 gw 10.15.228.1 eth0 for some strange reason, when i do just route, this is what i get... ...
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1answer
825 views

Route SSH to host through interface

Is it possible to route all outgoing requests for SSH (port 22) to mydynamicdns.afraid.org via wlan0 instead of eth0 when both are connected? Since my IP is dynamic, I would like to use a name ...
3
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1answer
3k views

LAN server with two network cards, can't telnet / ping to the second even if it works

I have an issue with an Ubuntu 12.04 LTS (updated) server. For reasons too long to detail, it has got one eth0 interface assigned to 192.168.1.9 and one Wifi wlan0 interface assigned to 192.168.1.10. ...
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54 views

delay in IP route deletion

(Apologies if this is the wrong StackExchange for this question, but there does seem to be some confusion regarding appropriate targeting of IP networking questions) I am very much a network newbie, ...
3
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0answers
627 views

OpenVPN and routing problem on OpenWRT

My home topology: router1 (192.168.1.1) - D-Link dsl2540u server with static IP available from Internet (ADSL via ppoe). 4 LAN ports. router2 (192.168.1.2) - D-Link DIR-300 with OpenWRT. Plays ...
3
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1answer
135 views

IP rule table look up does not seem to work

I have a sytem with three network interfaces. Below is the configuration that I'm trying to set up. wlan0 (its actually an WiFi AP interface) - other devices connects via this interface. net1 - ...
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3answers
259 views

Change routes for VPN

I need to use for some things a cisco VPN connection, but I don't want to route all my trafic over the VPN but only that traffic, that is send to a specific network. How does a script look like, that ...
2
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2answers
370 views

How to use a defined local IP instead of external one

I have a Gentoo Linux server. Server is connected to two networks: internal and external. Internal network ip: 192.168.1.200 External network ip: 192.168.0.2 If I'm trying to make request from ...
2
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1answer
3k views

system wide SOCKS5 Proxy

I connect to my Server on the internet using ssh -D 3128 user@rootserver.com. If I am right I thereby open a SOCKS v5 Proxy to my Server. Using firefox and FoxyProxy I can now add this to my proxys ...
2
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2answers
77 views

which order is the route table analyzed in?

On my pc I have to following routing table: Destination Gateway Genmask Flags MSS Window irtt Iface 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 ...
2
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1answer
126 views

Bring network interface down if physical connectivity is lost

I have a headless Debian server with two network cards: 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000 link/ether 01:02:1d:54:7c:01 brd ...
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1answer
1k views

How does iptables MASQUERADE work on the incoming side?

I'm still reading the iptables manual page and other documents and digging around questions and their answers. This is the problem which arises. When we setup the NAT we use a POSTROUTING rule such ...
2
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1answer
3k views

How to add ipv6 default route

I have the following setup Linux 1 Linux 0 eth1 eth0-------------------eth0 14.14.14.80 19.19.19.20 19.19.19.10 2005::5/64 ...
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1answer
601 views

proper syntax to delete default route for a particular interface?

summary: me@client:~$ sudo route del default ppp0 SIOCDELRT: No such process me@client:~$ sudo route del default dev ppp0 SIOCDELRT: No such process me@client:~$ sudo route del -net default dev ppp0 ...
2
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1answer
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set ip default outgoing in centos

I have server which has Centos and I want to change the outgoing IP address. This is the output of my route and route list commands. [root@marketport tmp]# route -n Kernel IP routing table ...
2
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1answer
197 views

about route table setting, and ssh between vmware

firstly i got 2 physical machines PC and notebook 1. under PC(WIN7, 192.168.1.2) have a VMWARE, VMWARE installed one solaris(172.168.1.50). I can use putty to access to solaris from PC. ...
2
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1answer
5k views

Only routing certain traffic through VPN

I have a central development server, running a VPN server, and a couple clients that need to connect to it. The server is running Apache, but is only accepting local requests (only listening on ...
2
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1answer
432 views

Linux “ip route” changes source address of TCP but not UDP

When sending packets from an application that binds to a local address TCP uses a different source address than UDP. For example, bind to 10.10.0.51 (alias IP), the src addr for UDP is 10.10.0.51 but ...
2
votes
1answer
253 views

How to check and set “rhash_entries” parameter?

I'm reading this article, and it says: rhash_entries is the size of the hash table. If you don't specify it on the kernel command line, it is computed dynamically based on the memory available on ...
2
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2answers
5k views

Packet loss with RX error packets

I am seeing packet loss from all my blade servers within the HP Blade C7000 enclosure. # ping 192.168.2.140 PING 192.168.2.140 (192.168.2.140) 56(84) bytes of data. 64 bytes from 192.168.2.140: ...
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2answers
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Static routes in route-eth0 ignored

Why might route-eth0 be ignored but route-eth1 not? Might be because eth0 is using DHCP and eth1 is statically-configured? I have some static routes configured in ...
2
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1answer
39 views

How to connect between two Linux machines VIA Linux router machine

I have three Linux machines that connected as the following: Linux_machine1 --> Route_linux_machine --> Linux_machine2 How to ssh from Linux_machine1 to Linux_machine2 Only VIA ...
2
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0answers
68 views

Binding to a VPN interface not working

so I've been working on setting up a Raspberry Pi running Raspbian lately, and I have almost everything set up the way I want. I plan on using it headless, but I've been using X11 forwarding to view ...
2
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0answers
183 views

Connecting to two ISP in local network using two different network

We have two ISP 1. BSNL (INDIA), 2. Airtel (INDIA). we getting Bsnl internet through D-Link DSL 2750U modem which holds the IP 192.168.1.1, Airtel internet modem with 192.168.2.1 IP address, Here it's ...
2
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0answers
111 views

Default iterface/routes metric in Linux

When I run ip route on my Linux machine, I see default via xxx.xxx.xxx.xxx dev eno1 metric 202 I wonder, where this 202 metric is configured and what other ip commands use it.
2
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0answers
147 views

forward virtual interface network in KVM guest to the physical interface in the host machine

I am trying to experiment with Linux IP routes. This is what I have so far. I have a host machine whose network details are as below. wlan0 inet addr:192.168.1.9 Bcast:192.168.1.255 ...
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0answers
297 views

Forward multicast between two LAN segments (Chromecast)

I've found some rules but most are inconclusive. Chromecast uses DIAL and discovers via multicast from what I've understood.. I have an Ethernet-connected computer which I would like to route via my ...
2
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0answers
245 views

KVM guest as default gateway for bridged network

I currently have two vm's both on kvm (virt-manager), both running on separate virtual interfaces (virbr0 and virbr1). The IP of virbr0 is 192.168.122.0; the IP of virbr1 is 192.168.123.0. Both VMs ...
2
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0answers
70 views

Update Route Entry On another DD-WRT upon New IP address (WAN) SSH linux

I have two routers on two different gateways/ISPs but on the same local subnet (192.168.). If router A (192.168.1.1) gets IP address from the ISP (for example 24.64.10.15, non-static), I would like ...
2
votes
1answer
777 views

CentOS 6.5 have to manually add the default route

With CentOS 6.5 on an R710 I have to manually remove the default route; and sleep 10 before adding it back otherwise the interfaces do not use the default route that was added upon boot. There are no ...
2
votes
1answer
1k views

Accessing VirtualBox guest via VPN

I've searched and tried a few suggestions but I haven't been able to get this to work, yet... My host is running Ubuntu. I installed VirtualBox, created a host-only adapter, set the host IP to ...
2
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0answers
411 views

How to bind ppp0 interface (PPTP VPN) as 'external' in proxy server?

I'm trying to bind ppp0 interface (PPTP VPN) as 'external' interface in proxy server (Tinyproxy). Unfortunately it does not work. Using route add -net default gw 10.9.0.1 I can make all the traffic ...
2
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0answers
478 views

Route VPN gateway traffic via tun0 instead of normal gateway

On my Linux box, I have a tun0 interface by IPIP tunnel 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 an ...
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3answers
135 views

Force all network traffic go through default gateway

I have a machine that I want to force all traffic to go through the default gateway. Even traffic on the local network. I have made it to work by removing the auto generated route for this interface, ...
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1answer
179 views

Point IP to an application instance

I was just wondering how I go about pointing a static IP address which I have purchased to an application instance on my server, using a different IP from the one I currently have pointing to my main ...
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1answer
49 views

Where is routing table stored internally in the Linux kernel?

When I execute route -n, from where exactly (from which structs) is the information displayed retrieved? I tried executing strace route -n but I didn't help me finding the right place it's stored.
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1answer
32 views

Gateway configuration is not working

I have three virtual machines, vm1, gwvm and vm2. gwvm has two interfaces, one connected to vm1 and other connected to vm2. Following image has IP and route details, Here vm1 and vm2 are in ...
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2answers
7k views

Route add gw: how to

I'm in a network with IP 10.0.1.X (pc A). There's another sub-network: 10.0.3.0 I can ping pc B connected to this network: ping 10.0.3.X ---> OK Now, B is connected also in wifi to a network ...
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1answer
122 views

Routing 4 Networks

I've been trying for almost a week to make it work but without success. I'm starting to feel hopeless. I have 4 Ethernet adapters : 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state ...