Ubuntu Networking :: Edit System Routing Tables?
Apr 3, 2011Where and how can edit Linux routing table?
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Ubuntu :: Script To Reconfigure Automatically Routing Tables?
Jul 3, 2011i managed to make me a script to reconfigure automacitally my routing tables (wireless internet; wired a connected hotspot for my ftpd) now i need at last to remove line "2" from /etc/resolv.conf
when i try to
Code:
root@HP-Compaq-8510w:~# vi +2 --cmd "dd" /etc/resolv.conf
i get
Quote:
Error detected while processing pre-vimrc command line:
E492: Not an editor command: dd
Press ENTER or type command to continue
Networking :: Insert Routing Data Into The Routing Table Doesn't Work?
Apr 6, 2010I have a firewall, this consists of three NIC's:
Code: eth0[192.168.0.2] eth1[192.168.1.2] and eth2[10.10.165.2]
I am trying to ping eth0 from eth2, but I am not able to succesfully get a response from pinging the device, I am using:
Code: ping 192.168.0.2 -I eth2
I have tried to insert routing data into the routing table, but it still doesn't work
Ubuntu Networking :: Ip Tables Point To Website?
Jan 22, 2010i have an AP set up and would like to have all requests for a website sent to a specific ip address.. and am trying to get this to work in IP tables
user-->AP-->google.com
no matter what site they try to goto it takes them to [URL] i want to use this to require people to login to my server when they connect to my AP before they can go any further.
Networking :: IP Tables With 2 Routers?
Sep 1, 2010I have 2 routers both with 5 network cards (both different subnets). On both machines I have the following configuration: Eth0 is the internet conection, Eth1 is the conection to the other router and the other network cards are for the subnets.My current Ip tables script allows all the subnets of one router to see each other but not the subnets of the other router.
In the new situation I want not all but specific subnets to see each other (no problem here)The issue is that some of theese subnets are subnets of the other router. For example the subnet of eth2 router1 should be able to connect to eth 3 on router2. This is were eth1 comes in play. My plan was to configure iptables so that in above example eht2 would be forwarded to eth1, which will forward to eth1 on router2.Then the iptables configuration on router2 will forward it to the network card of the correct subnet.
eth2 (router1) -> eth1 (router1)
eth1 (router1) -> eth1 (router2)
eth1 (router2 -> eth3 (router2)
[code]....
Networking :: IP Tables Port Forwarding?
Jan 8, 2010We have one linux machine in the office which happens to be an important firewall. I just know the basics and need to make one changeEssentially it is forward mysql traffic to another internal machine.This is the original rule (forward to 192.20.0.17) which is working
Code:
$IPTABLES -A tcp_packets -p TCP -s 0/0 --dport 3306 -j allowed
$IPTABLES -t nat -A PREROUTING -p TCP -i $INET_IFACE -d $STATIC_IP --dport 3306 -j DNAT -
[code]....
Networking :: Open Ports In IP Tables
Jan 30, 2010I would like to open some port from IN to OUT pop3,smtp.whenever i tried to add some rules to existing iptables it gives me an error.Applying iptables firewall rules: iptables-restore: line 21 failed
View 7 Replies View RelatedNetworking :: Using Ip Tables And Rules, Will Be Able To Make All Three Of These Able To Handle Traffic?
Mar 22, 2011I have a machine with 3 internet facing nics, all of which have static IP's. The IP's are all in the same subnet, and use the same default gateway.Using ip tables and rules, will I be able to make all three of these able to handle traffic?I have the following configured, but it doesn't appear to work:
# ip rule
0:from all lookup local
500:from 72.43.220.146/29 lookup 1
[code].....
Fedora Networking :: What Does 'BGP Default / Metro / Full Tables' Means?
May 24, 2009Could someone please explain what does "BGP default / metro / full tables" means?I have to sign a contract with my ISP for BGP peering, and I have to choose between those three BGP tables... What does that mean? If I choose only metro, will my IP class (the one I'm gonna route through my ISP) have access to the whole internet or will I be stuck in the ISPs metropolitan network?
View 7 Replies View RelatedCentOS 5 Networking :: IP Tables Comment Module Causes COMMIT Fail?
Feb 12, 2011IP Tables Comment Module Causes COMMIT Fail
/etc/sysconfig/iptables:
*filter
:CHAIN_X - [0:0]
[code]....
Networking :: Networking Routing \ Use The Terminal To Assign Server Eth0 A Proper IP Address?
Jun 8, 2010i know exactly what i need to do, im just not familiar enough with command line to do it properly.i have 7 computers.the first 4 are connected to a router via wireless at one end of the house. of the last 3 only 1 will be able to access the router via wireless, so it needs to share it's one wireless connection via ethernet. this computer i'm going to call 'server'server will have two IP'swlan0 192.168.1.6 this connects to the router that has internet access.eth0 i intend to have the following settingsip:192.168.0.1sub: 255.255.0eth0 will connect to a second router, where the cat5 cable goes from the server, into the internet port of the router where i will define the router's static IP:IP: 192.168.0.100sub: 255.255.255.0gateway 192.168.0.1i have then set the router IP for LAN handling as 192.168.27.1 and all ethernet connections will have a 192.168.27.x IP.
so i need to know how to, without a gui application, use the terminal to assign server eth0 a proper IP address, and tell the server to take the connection it has and share it through eth0 to supply internet for the last 2 computers via ethernet.i had it set up in this way with a windows machine being the one that had the wifi access, but i'd rather have it setup for the ubuntu server to do this task. security is imperative for these 3 remaining machines, so just getting 2 more wifi adapters for a connection to the initial router isn't an option.the 2 that connect to server do so through SSH and though server IS connected via wireless it only makes outward connections through
Fedora :: Edit "Places" Menu Way One Can Edit "Apps" And "System" Menus On Gnome?
Jan 14, 2010Is it possible to edit the "Places" menu the way one can edit the "Applications" and "System" menus on gnome?
Right-clicking on the bar gives only Applications and System as editable menus. I would like to remove some items from the places menu and add others of my own liking
Ubuntu Networking :: Routing Between Two Subnets ?
Feb 16, 2011I have a network routing problem that I need to fix using a PC with ubuntu installed.
Here are the details of my problem:
- I have two networks.
- The first network is an ADSL router with subnet 192.168.1.x. I do not have access to the router nor change any of its configuration.
- The second network has a subnet 172.26.x.x and connect via a wireless access point. Some of the devices connected to the network require to have static IPs.
- I have a PC with ubuntu installed and two ethernet cards: one connected to the first network and the other connected to the access point.
- I need to share the internet connection between the two networks using ubuntu. I already tried before on windows and the sharing worked when both networks were configured to use the same subnet. Once I changed the subnet of the second network, internet sharing stopped working.
Ubuntu Networking :: Application Routing 2 Different Gateway?
Feb 5, 2010My Laptop is connected to 2 different network (Wireless "gateway 10.170.8.1" ;cable wired "gateway 192.168.1.1")the gateway 192.168.1.1 is the default i want all application like firefox that connect via http and https port 80 and 443 to use the gateway 10.170.8.1)
else to use the default gateway
Ubuntu Networking :: WAN/LAN Routing - Cant Route Back In?
Mar 13, 2010I've got an Ubuntu web server running 9.04 & Apache2. Ive got 2 NICs, one with an internal address for the LAN and one with and external address for the WAN to host the websites. My IP configuration is as follows (/etc/network/interfaces):
# The loopback network interface
auto lo eth0 eth1
iface lo inet loopback
# The primary network interface (WAN)
iface eth0 inet static
[Code]...
When i do a traceroute from a LAN PC and it makes it all the way to the router and then just stops. I'm probably missing something very simple, its been probably 10 years since i took a class in this.
Ubuntu Networking :: Routing - Forward All Traffic To An Ip To Another Ip
Jul 25, 2010I need to be able to do the following: Physical Router located at 192.168.40.1
On Ubuntu 10.04 Lucid machine:
eth0 with static ip 192.168.40.2
eth1 with static ip 192.168.40.3
eth2 with static ip 192.168.40.4
Associate a virtual address to eth1 with an entirely different network address such as 192.168.50.1 Do the same (virtual address) for eth2 -- e.g. 192.168.60.1 In the application:
register phone number A at 192.168.40.1 (The application will automatically use eth0 for this)
register phone number B at 192.168.50.1
register phone number C at 192.168.60.1
Somehow forward all traffic (including the register request) sent to 192.168.50.1 to 192.168.40.1 as if the register had been made directly to 192.168.40.1. In other words, the app "sends" registration and traffic to 192.168.50.1 but then Ubuntu forwards it to 192.168.40.1 (but the app does not know that). Similarly, forward all traffic sent to 192.168.60.1 to the router at 192.168.40.1.
Do the same for the reverse, forward all traffic that the router sends back to 192.168.40.3 (eth1) to 192.168.50.1 (within the Ubuntu machine) so that the app knows it is for phone B. Similarly forward all traffic that the router sends back to 192.168.40.4 (eth2) to 192.168.60.1 so that the app knows it is for phone C. Thus, the application believes that it is registering at 3 completely separate routers on 3 completely separate networks via 3 separate network interfaces but in fact is really registering all three to the same router (but does not know that). Similarly, the router believes that it is receiving 3 separate registrations because it receives each registration request and traffic from 3 separate interfaces and thus 3 separate mac addresses (i.e., of eth0, eth1, and eth2). Traffic sent to and from the router for each of the 3 phone numbers (via eth0, eth1, and eth2) are not mixed because the translation happens in both directions.
Ubuntu Networking :: Routing Internet From One Router To Another?
Feb 11, 2011How can I find the IP of a router wirelessly so I can use the second router for a better signal? (A farther reaching wireless card is what im trying to make it do)
also how can I find the subnetmask this way?
Ubuntu Networking :: Routing Over Certain Interface Using Iptables?
Feb 24, 2011I am establishing a VPN connection with a Cisco VPN server, but only want outgoing connections to a certain set of IP addresses to actually go through the VPN. I tried something like this:
Code:
sudo iptables -A OUTPUT -t mangle -p tcp -d 111.222.0.0/16 -j ROUTE --oif tun0
but keep getting
[code]...
Ubuntu Networking :: Two NIC Routing From Laptop To Server?
Feb 27, 2011I have a server that has two NIC cards installed eth0 and eth1 we use a linksys router (192.168.2.1) which runs DNS for our LAN. I have installed Squid on the server which runs Ubuntu server (8.04 Hardy) w/ GUI. I can surf the net on the server with google chrome configured to use proxy server localhost:3128...works good. The router is wire directly to eth0. I have my laptop (running Ubuntu Hardy) wired to eth1 and I want to be able to surf the Internet through my server. From my laptop, I can ping 192.168.2.100 which is the IP address assigned to eth1[?] by my router. I assume I need to establish a route from my laptop to my server. I would like to archive this via the CLI and I am not having any luck thus far. If I add static IP addresses to eth1on the server and eth0 on my laptop will this simplify the process? How can I add a route which will allow me access to the Internet via my laptop?
Server:
Code:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth1
0.0.0.0 192.168.2.1 0.0.0.0 UG 100 0 0 eth1
0.0.0.0 0.0.0.0 0.0.0.0 U 1000 0 0 eth0
ifconfig eth1 on the server:
Code:
eth1 Link encap:Ethernet HWaddr 00:30:48:85:cc:1b
inet addr:192.168.2.100 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::230:48ff:fe85:cc1b/64 Scope:Link
Up Broadcast running Multicast MTU:1500 Metric:1
RX packets:7701 errors:0 dropped:0 overruns:0 frame:0
TX packets:7898 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:5572718 (5.3 MB) TX bytes:1506869 (1.4 MB)
Base address:0x9000 Memory:ef400000-ef420000
Networking :: Routing Packets From One IP To Another
Sep 6, 2010My setup is...I have a wireless access point using laptop as a gateway. The AP is also connected to a switch as is the laptop. So the laptop has two interfaces one wireless and one wired. A third device is using the AP to connect to a server on the internet. The AP sends the packets to my laptop where they are dropped. I've been looking for a solution to this problem without success. Basically is there a way for my laptop to forward all packets it sees from a certain IP address to whatever destination address they have?To clarify, my laptop is just the gateway of the AP and none of the packets are addressed to it at all, it just picks them up using a sniffer or similar tool.
View 1 Replies View RelatedNetworking :: Routing Between 2 Nics?
Mar 10, 2011I have a pc with debian 6 (without GUI) installed on it and want to use it as server at home. It has 2 ethernet nics. Now i want to configure the routing process. Searched internet for a long time found something but couldn't get it work.
View 8 Replies View RelatedNetworking :: Routing DNS Through SSH Proxy?
Feb 17, 2010When setting up an SSH proxy, I know you can configure Firefox to route DNS requests through the proxy. Is this possible from linux directly? I'm trying to use wget through the proxy, including DNS lookups.
View 3 Replies View RelatedNetworking :: Routing Two Subnets ?
Jun 26, 2010I have two subnets which I am interested in connecting.
Some basic network details:
Subnet A:
Subnet B:
I am trying to think of any further relevant details, but that seems to be it to me. If I forgot anything, please tell me.
Ok the question. WHAT do I type? (Explicitly!) And WHERE do I type it? In order to reach ubuntu-01.tec.lan, or ubuntu-02.tec.lan from perpetrator.tec.lan or rapine.tec.lan?
I'm interested in using actuall ROUTES. I can already achieve results similair to this with either a NAT firewall, or with VPN.. but that's not what I am interested in.
From what I have found out so far, I should need something like the following:
On Gateway 1B:
Code:
And on Gateway 1A:
Code:
Networking :: Routing Wireless AP To LAN
May 14, 2010I'm newbie to Wireless. Currently I try to implement EAP-TLS but firstly I need to get the hardware work, allow Access Point to Route from Wireless to Wire (LAN DNS server).
View 4 Replies View RelatedNetworking :: Routing With 2 WANS 1 LAN
Apr 22, 2010I am having some trouble setting up routing on my Ubuntu 9.10 Server. I have the GUI installed with Webmin and OpenVPN Heres the setup :
1 NIC - WAN - eth0 - IP: 146.231.x.x SUBNET: 255.255.252.0
1 NIC - LAN - eth1 - IP: 192.168.1.1 SUBNET: 255.255.255.0
1 NIC - ADSL - eth2 - dynamic
What I need to do is the following.
All users are connected to the LAN.
All requests for IP range "146.231.x.x", and "domain.com" need to be routed from LAN (eth1) to WAN (eth0).
All other internet requests need to be routed to ADSL (eth2).
-> I have the masquerading in the linux firewall working for NAT, but all traffic goes to ADSL (eth2).
-> I am using OPEN-VPN over the ADSL also.
-> DHCP and DNS work fine.
I also need all ports opened with the route (from eth1 to eth0)
Ubuntu Networking :: Ipv6 Router Not Routing To Local LAN?
Mar 6, 2011my local clients connected to the IPv6 internet.
I've already designated a machine to act as the router to the hurricane electric tunnel. I created a he-ipv6 device on it and can ping ipv6.google.com. No problem.
The problem happens when I want clients to use that router. That is, I can't ping ipv6.google.com from other machines on my LAN.
I setup /etc/radvd.conf, which seemed to successfully give out addresses to my clients:
interface eth0
{
AdvSendAdvert on;
prefix MY:HEREFIX::/64
[Code]....
I start the daemon and check that my clients have new ip6 addresses. So far so good. On my router, I do a sysctl -p and see that /proc/sys/net/ipv6/conf/all/forwarding = 1. I haven't touched ip6tables/iptables yet. Both are in a flushed state.
My ipv6 router is actually inside the LAN which gets internet from another machine which has let ipv6 packets through using protocol 41. I figure I don't have to worry about anything else because if my router can ping6 ipv6.google.com, the failure point would be there.
So my clients get ip6 addresses, but can't ping6 the router nor the ipv6.google.com. They do resolve ipv6.google.com however and I checked the traffic on the router over he-ipv6 from ifconfig and RX and TX bytes were changing during the ping.
My router has only one physical device for forwarding, eth0 and the tunnel device he-ipv6. Do I need to add some kind of ip6tables to see a simple ping from my clients?
Fedora Servers :: Use Tab Networking In Kvm With Routing?
Mar 3, 2009I want to use tab networking in my kvm with routing.Can any one guide me how i can do it. i have been reading different guides over the net but not understand any one clearly.I have read this[URL].. One problem is this all my server are remote and no gui is running.I am able to install kvm with ssh console with -nographic and -x "console=ttyS0" option now i want to change from bridging to tap networking with routing.And i have live ip on kvm guest/Virtual machine.
View 1 Replies View RelatedFedora Networking :: Different Routing From Inside And Outside?
Feb 20, 2010IN LAN default GW box I have a routing rule of 172.17.1.0 192.168.180.100 255.255.255.0 UG 0 0 0 eth3 that sends packets matching 172.17.1.0/24 to eth3 etc. When I ping 172.17.1.50 - it goes correctly when ping is issued in the same box (LAN GW) - falls through to default rule when the ping is done in LAN's boxes i.e. it goes to the LAN GW box and then to Internet incorrectly instead of going to eth3 and 192.168.180.100.
Is there any way of seeing why the packet matches or not the routing rules?
Networking :: Routing One Gateway To Different Subnets ?
Sep 3, 2010Im having a issue with routing internet traffic from my router two different subnets (vlans).
Theres my setup:-
Server:
Both eth0,1 are running dhcp (two scoopes) that works fine!
The output of route -n is:
I have ip_forwarding on aswell, but i can ping the ip on the server running that dhcp scoope ie ping 192.168.4.1 works great but i just cant get the internet on the clients.
Networking :: Change Routing On Certain Conditions?
Feb 24, 2011I have two linux boxes running RHEL 5.5 with internal ip addresses 10.0.0.114/24 and 10.0.0.118/24, and usual gateway 10.0.0.1. There's an apache listening on both ports 80 and 443 for several websites. This works nice, but the feature for load balancing has to be added. For this, externally, but in the same subnet, a hardware device has been placed for load balancing (we call it "F5"), with internal ip 10.0.0.152 (vrrp for 10.0.0.153 and 10.0.0.154). There's a service address that does NAT via round robin to the servers, 10.0.0.208, managed by the F5 balancer.
If I set as gateway the ip 10.0.0.152 in both nodes, I can use the service address for browsing http and https, *BUT* at a cost that ssh and any other connections, at OS logging level, come from 10.0.0.1, which is innaceptable (i.e., I can' set proper security, regardless the F5 is badly configured), so I have to find another way for this. So, I thought of using iptables mangling capabilities, and my thought is that just changing the default route of the incoming http(s) traffic, everything should be ok. I've done the following:
- Create a table called "F5":
# cat /etc/iproute2/rt_tables
[...]
#1 inr.ruhep
#
[code]....
If I tweak the hosts file in my M$ workstation to test individual access for each server, I can browse the websites with no problem, but if I set the service IP address, I get an error "Document contains no data" in the browser after just a few seconds. Apache logs show nothing in its logs. I can see packets arriving, but seem to go in a loop. I can provide some output, but since surely I'm making some mistake in the process, if I get help with the proper knoweledge about how to fix it, the problem will be solved. But if still someone needs it, I can provide more data.