Networking :: Restore Back The Default Ip Routing Table?
May 16, 2010
Is there any way to restore back the default ip routing table? For example, my current routing table is something like
Code:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
109.123.95.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 109.123.95.1 0.0.0.0 UG 0 0 0 eth0
Then i connect to a vpn service and the routing table get's changed..now when i close it, it doesn't reset back to my default routing table.
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Apr 6, 2010
I 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
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Apr 5, 2010
After making an changes (add/modify/delete) to /etc/static.routes, what command should we use to reload the routing table?
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May 18, 2009
routing tables using "ip route 2" I have a server(server1 from now on) with eth0(internet connection) and eth1(lan connection). eth1 have 2 more alias devices = eth1:1 and eth1:2 On my server 1 the eth0=public ip, on eth1=192.168.10.1/24, eth1:1=192.168.20.1/24 and eth1:2=192.168.30.1/24 server1 is running squid and iptables to all 3 networks (eth1, eth1:1 and eth1:2) All of the clients have access to internet. Now what i want to do is add 3 more networks via a router(linuxBox = server2 from now on) connected to server1 in eth1. so the network will be like this:
Code:
server1
eth0=internet
eth1=192.168.10.1/24 (connected to server2 and other clients)
[code]...
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Mar 1, 2010
A packet is sent from the computer to the router it's connected with only the destination address in it, right? So - what does "kernel routing table" mean?
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Nov 29, 2010
I have to connect my private adres 10.0.0.2/26 to an external adres 192.168.1.253/16
I am not allowed to use Nat so i have to create a static routing table..
Ive put a router between with 2 nic's:
Ive seen on various sites that :
Should do the trick but it isnt working for me ... Ipforwarding is enabled.. Also when i use the sys/proc command..
How to make the table? I am using Opensuse 11.2
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Aug 26, 2010
eth1 which is connected to interneteth2 internal networkbecause the server is part of a complicate network i need to setup the routing tables for eth1 and eth2but i need that the default 0.0.0.0 must be read from eth1 while i dont know why the server first read the one on eth2. this creates big problem to me.if i add the default route to eth1 i get an error saying that the default route already exist (i suppose is the one on eth2)how i can solve this ? i must create a script that first delete the default from eth2 and after add it to eth1
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Mar 7, 2011
somehow in the process of trying to get wireless connection, gdm on start-up now fails. i'm stuck in commandline and i have to manually specify startx everytime.
how to i restore debian back to default starting up in gdm?
i've lost my shutdown button, it just disappeared!
how do i restore it?
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Mar 13, 2010
I'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.
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Apr 24, 2016
After a long time that I didn't touch my PC I just forgot how to configure the routing table I trying to ping the router and get "destination host untraceable" I manually assign the ip of the machine to 192.168.1.2 .And the gateway ip to 192.168.1.1 the only problem now
Is to get to the router interface on 192.168.1.1 to configure my internet and to browse
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Aug 5, 2010
My routing table does not get complete for some reason. I'm using a Huawei E220 USB modem on openSUSE 11.3 using NetworkManager to connect.When I connect to the net the routing table looks like
Code:
/home/freefox # route
Kernel IP routing table
[code]....
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Jul 25, 2010
I have an Ubuntu 9.10 server installation which have been working flawlessly for some months. The server runs bridged networking, because of some VMs that runs on it. But, a couple of weeks ago the network connectivity have started to disappear now and then (usually once a day or so). Running "sudo /etc/init.d/networking restart" always kicks it back to life.
After a bit of debugging I noticed that when OK the routing table looked like this:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 br0
192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0
default 192.168.1.1 0.0.0.0 UG 100 0 0 br0
While when in the non-working state it looked like this:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 br0
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0
default 192.168.1.1 0.0.0.0 UG 100 0 0 eth0
default 192.168.1.1 0.0.0.0 UG 100 0 0 br0
Deleting the two routes to eth0 restores the networking again. Why these "erronous" routes gets added, and what adds them? How to further debug this?
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Dec 10, 2010
When I try wget URL... I get failed: connection timed out.I have created br0 as a bridge over eth0 to run this VM. The host has this IP 172.30.8.135.The host has access to internet through eth0 and this is the output of route inside the host.
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Apr 28, 2011
First, I installed CentOS 5.5 and Quagga 0.99.17.
Then I configure to run OSPF v2 on R1 and R2 following below:
I added --> #echo "1" > /proc/sys/net/ipv4/ip_forward to forward packet on centos
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Oct 8, 2010
I got swap space full error and the ubuntu version of "blue screen of death". I used Disk Utilities to delete a 2.1GB unused partition. When I tried to create a swap space partition (with Disk Utilities) it failed. In the mean time ubuntu did some security updates. When I tried to create again Disk Uilities did not complain but only created a small ~ 500 kB partition. I deleted that and reboot and got "unknown filesystem grub rescue>". I booted from a USB key successfully. Now Disk Utilities and File Browser can see all the partitions and files on the hard drive, but GParted thinks the entire hard drive is unallocated. I vaguely remember that there are two partition table on the hard drive. It may be that one of them was deleted (when I removed the ~ 500 kB partition with Disk Utilities earlier maybe?). It seems at least the other partition table is still intact since Disk Utilities and File Browser can still see all the partitions and files. Is it possible to restore the deleted or damaged partition table and make the hard drive bootable again?
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Aug 6, 2010
I ve got a dual boot, XP and FC 12 on a single harddrive. After defragmentation of NTFS partition (With XP installation) cant'boot linux So, rub statrts with boot menu after selecting linux it tries to load linux but prints out some messages again and again (I do not remember contetn of messages) And these messages are circulating
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Feb 23, 2010
I have searched and didnt find a situation like mine so i thought id ask. i have a dual boot setup on my hp pavillion windows vista /dev/sda1 and backtrack linux 3,while trying to install backtrack 4 (which is ubuntu based) i deleted the former partitons for bt3. im not quite sure what i clicked but using the ubiquity installer it deleted my partition table so now my entire drive is listed as unallocated space. i have some very important files on my windows partition other wise i would just format and start over. how can i restore the partition table and boot to windows to atleast grab the important stuff. the drive hasnt been formatted so the info is still there i just cant get to it anyone have any ideas?
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Mar 2, 2010
I was working on creating a partition on a new hard drive I was planning on using for storage. I wasn't paying attention and chose to delete the partition on my master. I am running a dual boot with Vista and Ubuntu. When I rebooted It will only go to the Grub> prompt. Ive ran TestDisk and though that I had corrected the problem but it didnt. After running TestDisk again here is what It came up with.
Disk /dev/sda - 320 GB / 298 GiB - CHS 38914 255 63
Partition Start End Size in sectors
L HPFS - NTFS 0 32 33 28554 254 63 458734027
L Linux 28555 1 1 38585 254 63 161147952
L Linux Swap 38586 1 1 38912 254 63 5253192
Structure: Ok. Use Up/Down Arrow keys to select partition.
Use Left/Right Arrow keys to CHANGE partition characteristics:
code....
After writing the table above I rebooted. Windows prompted me for my restore disk. I rebooted to the live cd again and ran Fdisk.
code....
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Jan 28, 2011
what I did was: - have NTFS (450GB + 4GB linux-swap + 44GB ext3 with ubuntu 10.10 upgraded from ubuntu 10.4). Ntfs partition contains data only, no windows.
- either with partition magic or paragon I tried to resize the NTFS and since then parted doesn't like my partitions anymore, but Ubuntu boots and works just fine..
- I took the output from fdisk -l and decided to remove the swap partition - ubuntu won't boot saying it needs the swap (although it was never mounted and i deleted the swap while ubuntu was active)
I have the following output from fdisk -l:
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
[Code].....
**NOTE: Since the partitions are not on cylinder boundaries, using parted to recreate the partition table may not be good enough.. I don't have a backup of the partition table.
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Mar 27, 2009
I was putting the cover back on my Antec p180b, and I guess it got stuck and gave it a hard bump (pretty much broke the cover). As a result, one of my hard drives, a Seagate Barracuda ST3750640AS, got messed up or something. All the other hard drives are fine. It's in an LVM with another hard drive, so now I can't boot up into my computer. So I booted into the installation CD:
Code:
# find /dev/sd[a-c][1-3]
/dev/sda1
/dev/sda2
[code]....
This led me to believe the partition was messed up. So I ran cfdisk, and it said something about a missing partition table or something. Additionally, instead of showing the single partition on it, it displays, from my recollection, Pri*Log. To my knowledge, this is the only problem with the hard drive. So now I need to either somehow create or restore the partition table without overwriting the data. Or get a new hard drive, and some how recover the data (LVM, partitions, and all).
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Feb 15, 2010
What exactly does gateway in a route refer to? I know what a default gateway is- it's the route of last resort. But used in context of a host route (with destination specified), what is a gateway and why is it important?
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Jan 16, 2011
Do i have any chances to restore my windows partition table after tried to install debian and i used the entire disk instead of the free space i had alocated for this
after i figured out what i did i stoped the installation but was to late ... i answered yes at write partition table changes on disk question
i tried win7 automate recovery tool from dvd and manual install of mbr with no successful result
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Jan 5, 2011
i was follow a tutorial how to change show desktop to minimize all windows
can any body help me how to restore it to default ?
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Oct 25, 2010
I used a Kingston 8Gb flash drive as a live usb recently (copied the live iso image over using dd). I am done with the installations and all but seem to have a problem. i cannot format my flash drive. It now shows as a live CD (800 or so mb). Is there a way to fix the partition table back? I guess if i copy a partition table image from some other 8 gb drive that might fix the problem but i dont have any other flash drives. Is there a solution possible or am i stuck with a live usb forever
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Aug 19, 2011
We purchased a virtual server from GoDaddy (1 month trial) to set up as a proxy for our networks (24 of them). I am having 2 separate issues. The first is I can't configure/install NAT and support is telling me the only way I can is to purchase a dedicated server. Here's the error:
iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 3128 iptables v1.3.5: can't initialize iptables table `nat': Table does not exist (do you need to insmod?) Perhaps iptables or your kernel needs to be upgraded. Here's the fix: [URL] So, what I am hoping to do is configure this by just opening port 3128 directly, and only allowing access from our networks. As a test I did this and allowed only from our office and it did not work. However I can't connect, so I am wondering what I am doing wrong? Here's my squid configuration:
[Code]....
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Mar 6, 2010
I've initialize a virtual disk and deleted the partition table didn't notice that i've done that to the wrong one, data still on the physical hard disks but....how I'll get my data back safe without losing it?
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May 22, 2011
I just backup my files. During restoration, there's a hash mismatch report. What I want to know is that, is there a way to restore certain files in the back up?
or is there are way to restore files by volume?
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Sep 10, 2010
I did a bunch of updates, in sid, no issues. But when I rebooted the next day the log in had chanded. No problems logging in, the appearance had changed, and you now have to use the mouse to click on your name to open the password box, where before you could hit enter and get the same results. It is not much, but I have been trying to to restore it back with out much luck. I've played with gdm and gdm3 and a couple of other things but no luck. I did see a update for log in but have not been able to figure out the next step.
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Oct 25, 2010
I have my back up disc but i do not know how too remove linux. I no longer want it.
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Sep 12, 2010
I have my system and software and data on my computer on an internal drive. On that system I have Back in Time backup software. I use Back in Time, to backup my data to an external drive.
Question: If my computer dies or my internal drive fails, I have to completely re-install everything including my system and Back in Time. If I want to restore my data from the good external drive, how can I do that with Back in Time? Doesn't it keep the Snapshots info or preferences on my dead drive? Or do I need to point my freshly re-installed Back in Time just to the data drive and it will recognize the snapshots etc. automatically?
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