General :: Networking - Doesn't Respond To Pings - View The Arp Cache Table?

Jan 20, 2011

I have a Slackware 13.0 server that is not replying to icmp pings. However, I have double checked that /proc/sys/net/ipv4/icmp_echo_ignore_all is set to 0. The weird thing is I can run nc -v slackware 22 from any computer on my lan and the banner comes up just fine. The nic is on the same netmask and broadcast as all the other computers on my lan. I can log into it as well, it just doesn't respond to pings. I can even ping other computers and get replies just fine when pinging from inside the Slackware server.

I have even added an iptables INPUT rule for -p icmp -j ACCEPT. Although I've never had to do this. I ran tcpdump -vv icmp and I can see ping requests coming into the computer, however slackware simply doesn't respond. What could be causing this? A corrupt arp cache? It's been happening for more than a few hours so I wouldn't think so. How can I view the arp cache table? How do I clear it?

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General :: Average Number Of Hosts That Respond To Pings During A Traceroute?

Feb 27, 2010

I am a new learner. I need a simple scripts that compute the average ping time for hosts, and the average number of hosts that respond to pings during a traceroute. I have finished the ping part but I confused how to start the traceroute part

Code:
#!/bin/bash
#!/bin/sh
txt=$*
count=0;
for host in $txt; do
echo $host

echo $( ping -c 3 $host | grep avg | sed 's@.*=@ rrt ave =@' | sed -r 's@ = [^/]+/([^/]+).*@= 1 ms@')
done;

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Debian Configuration :: Massive Delay Between Pings Yet Pings Fine

Aug 16, 2010

I have just installed a testing net install of squeeze on my laptop and I'm having a few problems with my wired connection.

When i try to ping google.co.uk there is a large delay between each result even through the actual ping takes ~30ms. It takes about 5 seconds or more between each ping.

If i use ping -n it works fine. Does anyone know why this is happening?

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Software :: Terminal Doesn't Display Failed Pings - Only Successful Ones - Debian Lenny

Sep 15, 2010

I am running Debian Lenny and just upgraded via "apt-get upgrade" yesterday and all appears to be fine, except I noticed that when I ping something from a terminal window, it only displays successful pings and does not show the failed ones. When the pings fail, I have to "Ctrl-C" to see the results and cannot see them in real-time. It's not a huge problem, but I'd still like to be able to see immediate results even when pings fail.

Example is below:

(Username and host name changed to protect the innocent; or due to being overly paranoid, whichever).

Failed -

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Ubuntu :: View Website From Local Cache?

Jul 14, 2010

I run a gaming clan forum on IPBFree. By all accounts the servers are Down, permanently.
Taking with them 2 years of my Clans Forum posts. I was wondering if maybe Firefox or Chrome keep some sort of local Cache on the HD that i can try and salvage as much data as possible from.

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Server :: Can't View PostgreSQL Table Data?

Dec 10, 2010

For some reason I am unable to view my database tables for my Wiki & I can't understand what I am doing wrong or what I'm missing. I know for sure there's table data on my 'wiki' database but for some reason I don't know how to list it.

Code:
psql (8.4.5)
Type "help" for help.

[code]....

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General :: Query Died: Fusername: Table 'rsmembers.User' Doesn't Exist

Nov 5, 2010

I just purchased a new server and loaded it with Ubunut server 10. I installed apache2, php5, and mysql5. apache needs a little bit of configuration left (I need to tell it to accept index.php in addition to index.html), but other than that, all the php is working. MySQL is working as well, at least on the server. If I do a "show databases;", it shows all the databases properly. I loaded phpmyadmin on the server for testing, but I'll be removing it once everything works - this is my production server. phpMyAdmin can find all the tables, perform successful queries, and do everything I want it to, HOWEVER If I try to use the login page, I get the error mentioned in the title of this thread.

The database is a carbon copy from my development server, which works flawlessly. All the php and html pages are exactly as they are on the development server too, yet I still get that error. I've reloaded all pertinent programs (apparmor, apache2, and mysql). Apparmor was because I had to declare some new lines for mysql to access a different location for the DBs I resolved the "can't load InnoDB issue", but this one is stumping me.

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Ubuntu :: Trash Bin - Doesn't Respond And Goes Dark ?

May 4, 2010

I am running Ubuntu 10.04 and yes, I am upgraded fully. But every time I go to look at the items in my trash bin, it doesn't respond and goes dark.

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Networking :: OpenVPN Connects But No Replies To Pings

Jan 7, 2011

I have an asus router running tomato firmware. Through the webGUI I have set up an openVPN server as per the tomato guides. I am using the network manager plug-in in ubuntu 10.04 to connect as a client to the tomato openVPN. All of my certificates seem to be set up and working correctly.

I am able to successfully connect to the openVPN server using the ubuntu client but after that I get nothing. On the client side I am unable to ping the router, any ip addresses inside my private network, the virtual network ip, and web browsing (client) no longer works.

Also, when connected I am unable to ping the client from the private network.

Before connecting

Code:
chris@ChrisLaptop:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:1e:68:90:5e:e9
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0

[Code]....

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CentOS 5 :: "Mount-cache Hash Table Entries" Problem

Mar 1, 2009

I have Celeron 2800D, 512 RAM (2 slots 256 each). I'm trying to install CentOS 5.2, it asks me about installation type (I tried graphic and text already, it stuck anyway), then after I press enter it shows me "Mount-cache hash table entries: 512" and that's all. I waited severl mins, it doesn't move. I tried to reboot pc several times, it's same. Then I removed 256 and left only 1 slot. and it's fine! I installed centos successfuly. Then I inserted second memory and centos does't load. I see some colored (each time new color) text that changes very fast and then black screen. I connected other HDD with WinXP, it runs fine, it shows me 512 mb, I can lunch Visual studio 2005 fine, etc. But centos just stuck each time if I have memory in both slots.

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Ubuntu :: USB Startup Disk Creator Doesn't Respond?

Jan 19, 2010

I have been an Ubuntu user for a few years now, and in the previous versions I have made numerous bootable USB devices, I always thought it was so useful, and I never have had any problems.I just installed version 9.10 the other day, and it seems to be working well, but the USB bootable disk creator is messed up big time.When i try to select an .iso image to add to the source disk image area, it is just unresponsive. And when i try to do something else, like format a USB device, it says i cannot format because the device cannot mounted. But i know its mounted because i can access the contents of the drive.Anyways this was a huge disappointment as I was showing a friend how useful the UBUNTU tools are, and it does this. Does anyone know anything about this bug?

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Ubuntu Installation :: Font (why Doesn't Anyone Respond When Asked)

Apr 16, 2010

I am posting again as I would like to solve a problem that has occurred several times over the past 3 years. As yet, I cannot find any threads that anyone has posted a response to it. I just did another search for "fonts squares" and although

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Ubuntu :: Mouse Doesn't Respond For Several Seconds Then Jumps

Jul 14, 2010

whenever I hold a key inside or outside of an application my mouse doesn't respond for several seconds then jumps. (this is a big problem in First Persion Shooters) I assume its a problem with xorg.conf

[Code]...

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Ubuntu :: Dhcp3-server On Computer Doesn't Respond?

Sep 11, 2010

I need to create a network boot from 1 laptop to another, with a crossover ethernet cable between them, no routers no nothing, my computer is supposed to be the server. I followed half dozen tutorials over the internet but I think my major problem is with the dhcp serverfollowed this tutorial[URL]but when the client boots it makes several dhcp requests but doesn't respondwireshark capture looks something like this until the client times out

Code:
1 0.000000000 0.0.0.0 255.255.255.255 DHCP DHCP Discover - Transaction ID 0x200d8ad

[code].....

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Slackware :: [GSB] After Install No Xserver - Keyboard Doesn't Respond

Nov 29, 2010

I was looking into installing Gnome for Slackware 13.1 due to the instability of KDE and I was able to find GSB [URL]. I ran the simple installation: Code: lynx --source [URL] Everything downloaded and installed so I logged off, ran xwmconfig and set it to gnome and then tried starting my xserver and my screen turns black with a single white dash in the corner. My keyboard doesn't respond (the lock lights won't turn on) and I'm stuck on this black page. I tried changing xwmconfig back to KDE and the same thing happens

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Ubuntu Networking :: IP Address - No Responses Received For Pings

Aug 6, 2010

I am having (seemingly) random trouble with my wired network ever since I installed Lucid. I have no problem getting an ip address from dhcp. However, randomly the computer will boot and although I have an ip address I do not receive any responses for pings on the network nor can I browse the web. If I sudo /etc/init.d/networking restart a few times (or reboot) it will start working. However, restarting the networking services (as mentioned above) again will cause me to no longer receive responses for pings or browse the web.

Furthermore, I have never been able to successfully ping if I manually set an ip address. I have un-installed network manager and I am using /etc/network/interfaces to configure the network. Using Lucid Lynx 64bit on a Dell Precision. I have pasted below the output of a few working commands. When I switch between static ip and dhcp I am commenting/uncommenting the lines shown in /etc/network/interfaces.

sudo lshw -c network
*-network
description: Ethernet interface
product: NetXtreme BCM5754 Gigabit Ethernet PCI Express
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:08:00.0
logical name: eth0
version: 02
serial: 00:23:ae:99:4a:85
size: 100MB/s
capacity: 1GB/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.102 duplex=full firmware=5754-v3.24 ip=10.200.147.153 latency=0 link=yes multicast=yes port=twisted pair speed=100MB/s
resources: irq:78 memory:f7cf0000-f7cfffff

cat /etc/network/interfaces
auto lo
iface lo inet loopback
address 127.0.0.1
auto eth0
#iface eth0 inet static
#address 10.200.147.56
#netmask 255.255.255.0
#broadcast 10.200.147.255
#gateway 10.200.147.1
iface eth0 inet dhcp

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Ubuntu Networking :: Strange Behavior With Pings From Desktop?

Mar 9, 2011

I've been trying to use MySQL in Ubuntu but I've been having some connection issues and in trying to troubleshoot that, I observed this strange behavior with pings in Ubuntu Desktops inside our network.

- All Ubuntu Servers we have (10.10 and 8.04) behave as expected
- All Windows machines behave as expected
- All 5 Ubuntu Desktops we have, (10.10 and 9.10) exhibit the following unexpected behavior:

If they have a local ip addresses and are connected within the internal network, either to a switch or directly to a router, pings take much longer to be sent. It's not a higher lag, it's the time between each ping that increases. I have to wait for around 5 seconds for each ping, but the time in the ping reply is less than 100ms, also they're all in order so I assume it's the system delaying the sending of each ping.

If I plug a USB 3G modem directly then it works as expected again (~1 sec between each ping sent). Is this an intended feature, that depends on the network environment, or is this something I should look into more closely?

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Networking :: Insert Routing Data Into The Routing Table Doesn't Work?

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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General :: Recovering Data - Doesn't Allow To View The Content Of The Folder /home/myself

Jun 29, 2010

I needed to install a new OS on a new HD but i also need the data on the old HD which has some problems (it doesn't boot anymore). The problem is that in the old one i had linux (Slackware) and so it doesn't allow me to view the content of the folder /home/myself. If there was something possible to do to recover all the data or if it will be forever lost.

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Ubuntu :: Can't Stay On Track And Doesn't Respond To Keys At Certain Times

Mar 17, 2010

my 9.04 64 bit ubuntu machine is having some major stuttering issue, as in it can't stay on track and doesn't respond to keys at certain times, the normal flashing text bar is flashing very quickly and very eradically as well. I reinstalled ubuntu keeping my /home on a separate partition, and then upgraded to 9.10 thinking that'd fix it, it didn't.at this point i don't know what's happening, My windows partition is fine.

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Hardware :: Ubuntu Lucid Doesn't Respond On Blank DVD Insert?

Nov 14, 2010

When I insert a blank DVD into my laptop, I expect that ubuntu lucid will notice, chugg a bit, and make that blank available to Brasero for writing or any of a number of similar options. This does not happen.

ANALYSIS:
* I rarely have this problem with blank CD media.
* I see the failure when I want to burn an ISO to media.download the ISO file

[code]...

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General :: Difference Between Hardware Cache And Slab Cache?

Nov 22, 2010

I am reading slab allocator, it defines slab cache, i am quite confuse is it same as hardware cache?

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Networking :: Pinging Multiple Interfaces - Getting Pings From Eth0 But Not From Eth1?

Feb 26, 2011

I have two network interfaces and their entries are shown as eth0 and eth1... I want to assign them static IPs which I do by

ifconfig eth0 192.168.9.245 netmask 255.255.0.0 up
ifconfig eth1 192.168.8.245 netmask 255.255.0.0 up

But I am not sure if it will ping both the interfaces if I issue a command

ping -I eth0 192.168.9.113 (machine in network)
ping -I eth1 192.168.9.113 (machine in network)

I am getting pings from eth0 but not from eth1

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Ubuntu :: Nautilus Causes Complete System Freeze; Ctrl+Alt+Fx Doesn't Respond?

May 29, 2011

All of these freezes happen either while I'm in Nautilus or I'm opening Nautilus. The usual Ctrl+Alt+Fx (x being one to six) to get into the backstage does not work. If I have some music open then it would start looping the last couple of seconds.Now generally I would go check the logs, but I see no nautilus logs so what should I check?This is all pretty recent. I think that this started to happen when one day exim4 (and some packages all marked exim) got updated but I cannot be certain. Major playing-around after that would be some Wine issues but the system froze once before all that Wine fun.So step one, what should I check?

EDIT: OK, .xsession-errors ouput:
Code:
/etc/gdm/Xsession: Beginning session setup...

[code]...

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Ubuntu Networking :: Long Pauses At Start Of Pings And Http; MTU Related?

Mar 29, 2010

Brand new network, just installed, all ubuntu 9.10 boxes connected to a Dell 2206 dumb gigabit switch, and from there to Dlink router to cable modem. Pretty simple. ISP confirms great link out and inbound,

However, http requests can sit for 20-30 seconds (sometimes longer), before content returns, same for pings.

Some thought it might be MTU-related. What is best MTU setting 1500/1492/ ?

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Debian Hardware :: Keyboard Multimedia Keys Doesn't Respond After Power Failure

Jul 23, 2014

Yesterday something has happened with power supply, so 2 of 3 PCs has shut down. And now my debian pc doesn't respond to multimedia (volume to be precise) keys, leds also doesn't work. Other keys are fine. Tried xev, but it doesn't respond to multimedia keys either. I have dual boot with Win7 on this machine, and it works fine with multimedia keys.

I believe this is a clue:

Code: Select all[   22.324109] generic-usb: probe of 0003:04D9:1702.0004 failed with error -110

uname -a:
Code: Select allLinux sharlin 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u1 x86_64 GNU/Linux

dmesg:
Code: Select all[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.2.0-4-amd64 (debian-kernel@lists.debian.org) (gcc version 4.6.3 (Debian 4.6.3-14) ) #1 SMP Debian 3.2.60-1+deb7u1
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.2.0-4-amd64 root=UUID=57fa72ea-ce79-4da0-a74d-2ffee8573437 ro quiet
[    0.000000] BIOS-provided physical RAM map:

[Code] ....

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CentOS 5 Networking :: Proxy - Error "can't Initialize Iptables Table `nat': Table Does Not Exist"

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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General :: What Is The Translation Table And Referance Table In Any DB

Feb 25, 2011

what is the translation table and referance table in any DB (with referance to Data conversion)

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Fedora :: When Use Yum To Make Cache,it Looks Like Doesn't Work At All?

Nov 20, 2010

I have some problem with yum. When I use yum to make cache,it looks like doesn't work at all.Just like this:

Code:
[root@localhost ~]# yum makecache
Loaded plugins: presto, refresh-packagekit

[code]....

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OpenSUSE :: Icon Cache Doesn't Update

Jan 12, 2011

openSUSE 11.3 with GNOME

Whenever I install a new application, that application's icon is broken (shows the generic "application" icon) until I run gtk-update-icon-cache on /usr/share/icons/hicolor. The package manager must not be updating it correctly, but for what reason I'm not sure.

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