root@lzm:~# traceroute -nI 50.112.0.205 traceroute to 50.112.0.205 (50.112.0.205), 30 hops max, 60 byte packets  1  192.30.139.193  1.626 ms  2.661 ms  3.654 ms  2  216.221.156.81  0.359 ms  0.618 ms  0.581 ms  3  89.149.184.109  40.953 ms  40.943 ms  40.918 ms  4  77.67.68.162  40.892 ms  40.869 ms  41.189 ms  5  205.251.225.162  72.881 ms  72.873 ms  72.801 ms  6  205.251.232.90  48.752 ms  48.727 ms  48.481 ms  7  205.251.232.151  48.850 ms  48.716 ms  48.759 ms  8  205.251.232.169  48.801 ms  48.799 ms  48.758 ms  9  50.112.0.205  49.061 ms  49.290 ms  49.258 ms root@lzm:~# traceroute -nI 54.245.255.174                                                                                                 traceroute to 54.245.255.174 (54.245.255.174), 30 hops max, 60 byte packets  1  192.30.139.193  102.061 ms  108.101 ms  116.718 ms  2  216.221.156.81  0.360 ms  0.586 ms  0.545 ms  3  89.149.184.189  40.760 ms  40.740 ms  40.715 ms  4  77.67.68.162  40.941 ms  40.925 ms  40.902 ms  5  205.251.225.164  40.880 ms  40.801 ms  40.775 ms  6  205.251.232.92  57.931 ms  57.904 ms  57.714 ms  7  205.251.232.157  48.559 ms  48.793 ms  48.765 ms  8  205.251.232.169  48.735 ms  48.537 ms  48.501 ms  9  50.112.0.205  48.946 ms  48.922 ms  49.234 ms 10  * * * 11  * * * 12  * * * 13  * * * 14  * * * 15  * * * 16  * * *   How to explain the above data? Is that mean the 54.245.255.174 was blocked on 50.112.0.205?  but 54.245.255.174 is rubygems.org and I can access it from browser.
65926
If I traceroute to my server via a bunch of different methods, the external ip seems to not work. However the server is online and accessible by this ip.  Localhost:  michaelxu@michaelxu-server:~$ traceroute 127.0.0.1 traceroute to 127.0.0.1 (127.0.0.1), 30 hops max, 60 byte packets  1  localhost.localdomain (127.0.0.1)  0.120 ms  0.069 ms  0.064 ms   Internal Ip:  michaelxu@michaelxu-server:~$ traceroute 192.168.1.3 traceroute to 192.168.1.3 (192.168.1.3), 30 hops max, 60 byte packets  1  michaelxu-server (192.168.1.3)  0.122 ms  0.065 ms  0.067 ms   External IP:   michaelxu@michaelxu-server:~$ traceroute 24.24.174.153 traceroute to 24.24.174.153 (24.24.174.153), 30 hops max, 60 byte packets  1  * * *  2  * * *  3  * * *  4  * * *  5  * * *  6  * * *  7  * * *  8  * * *  9  * * * 10  * * * 11  * *^C michaelxu@michaelxu-server:~$   ...it contines all the way to 30 ... the same thing happens if I traceroute it through the dns server  It also occurs if i do it from another online service:     Tracing route to cpe-24-24-174-153.socal.res.rr.com [24.24.174.153]...  hop rtt rtt rtt     ip address  fully qualified domain name 1   1   1   1       70.84.211.97    61.d3.5446.static.theplanet.com 2   0   0   0       70.87.254.5 po101.dsr02.dllstx5.networklayer.com 3   0   0   1       70.85.127.109   po52.dsr02.dllstx3.networklayer.com 4   0   0   0       173.192.18.230  ae17.bbr02.eq01.dal03.networklayer.com 5   0   0   0       66.109.9.97 ae-11-0.pr0.dfw10.tbone.rr.com 6   41  40  39      66.109.6.208    ae-6-0.cr0.dfw10.tbone.rr.com 7   39  39  40      66.109.6.0  ae-3-0.cr0.lax30.tbone.rr.com 8   37  39  39      66.109.6.65  9   42  40  39      72.129.9.3  agg1.lamrcadq-ccr02.socal.rr.com 10  36  36  35      72.129.10.73     11  53  60  49      24.24.209.18    ge17-0-spsdca1-ars1.socal.rr.com 12  *   *   *            13  *   *   *            14  *   *   *            15  *   *   *          What do the * * * mean? Is there any way to "fix this"
95431
My question is how to trap traffic going to 202.20.20.20 (The website IP/any dynamic input of website) and redirect to 192.168.1.10
112388
This might be a replica, I have searched and not found a similar question.  I currently have the HTC One M8 and am planing on getting a 1GiB Data pack, knowing me who uses internet over the top I would like my internet to get cut at lets per say at the peak of 1GiB. So as soon as I reach it, it gets cut off fully.   I have tried the Android Data limiter and it always fails me. I have not found any reliable applications (I will pay if worthy) Location is Ontario and my provider is Fido
106157
What do the [368:102354], [0:0] and [92952:20764374] in my iptables output file mean?  :INPUT ACCEPT [368:102354] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [92952:20764374]
65139
Is there a way to benchmark how fast my router is connected to my PC, independent of the internet?  I've had slower-than-usual internet-based benchmarks, and I'm having a hard time figuring out if it's because of a bad router-to-PC connection (interference, bad signal, etc.) or if it's indeed because my internet is actually slower.
82477
I have two internet connections from two different ISPs and I need to balance the traffic originating to and from my network between the two ISPs. I am using Debian GNU/Linux.  My set-up is like this -  eth0 (192.168.0.0/24) -- Local network  eth1 (192.168.1.0/24) -- ISP #1  eth2 (192.168.2.0/24) -- ISP #2  My local network is connected to this server via eth0 and the box is the DHCP server cum Gateway for all the machines in the LAN.  The server needs to do load-balancing between the two ISPs and also needs to do NAT-ing.  I have followed the routing instructions on  but I still need instructions to do the NAT-ing properly.  Any help will be appreciated.   PS - I know about pFsense but I need to use Linux.
101185
I have a system with two interfaces. Both interfaces are connected to the internet. One of them is set as the default route; a side effect of this is that if a packet comes in on the non-default-route interface, the reply is sent back through the default route interface. Is there a way to use iptables (or something else) to track the connection and send the reply back through the interface it came from?
77844
I have been told that we have two devices on a network:  10.40.225.142 and 10.40.225.144  These devices both have   Gateway 10.40.225.129  Subnet mask 225.225.225.128 (note 225 is Not a typo)   These are communication intermittently with a server 10.40.224.156  So my question is: Is that a valid subnet? I have only ever seen 255 or 0 in the first one - three octets.
73030
I'm getting this:  atul@ubuntu:~$ sudo apt-get install traceroute [sudo] password for atul:  Reading package lists... Done Building dependency tree        Reading state information... Done Package traceroute is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source  E: Package 'traceroute' has no installation candidate   Can any one tell me how to solve this problem?
49436
I already tried this  repository and couldn't get  it... This guy seems to have it:
22414
I just discovered very strange thing while testing my internet connection. My ping is smaller than it should be. For example ping time to Arizona State University is about 14ms.  eryk@eryk-pc:~$ ping www.asu.edu PING www.asu.edu.cdn.cloudflare.net (104.16.51.14) 56(84) bytes of data. 64 bytes from 104.16.51.14: icmp_seq=1 ttl=60 time=13.8 ms   I'm living in Poznań in Poland so my distance to Arizona State University in a straight line (very optimistic assumption) is about 10000 km. Considering the fact that ping time is a time for two directions (to the target and back to home). So my ping packet have to cross 20000 km distance. Speed of light is 300 000 km per second that is 300km per millisecond. So the smallest possible time to ping Arizona State University with my packet travelling at a speed of light is  20000/300=67ms   I have noticed similar results for servers located in Australia and some other States of America. Is my internet connection five times faster than light?
29672
My server has slowed down, and I don't know why.  Print from top:  top - 14:32:50 up 639 days,  6:30,  1 user,  load average: 67.93, 70.63, 79.85 Tasks: 245 total,   1 running, 244 sleeping,   0 stopped,   0 zombie Cpu(s):  3.9% us,  0.5% sy,  0.0% ni, 94.5% id,  1.0% wa,  0.0% hi,  0.0% si Mem:   1034784k total,  1021256k used,    13528k free,     4360k buffers Swap:  1023960k total,   635752k used,   388208k free,    36632k cached   vmstat 10 6  procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----  r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa  0 110 795604  12328   3980  46676    0    0     0     0    0     0  4  1 95  1  0 97 788848  12052   3960  46256 2985   33  3323    33  429     0  2  1  0 97  0 119 782660  13992   4096  45740 2780   14  2995   360  435     0  2  1  1 96  0 121 775924  15600   3724  42796 3084    0  3443   136  440     0  2  1  0 98  0 113 769392  13576   3476  41968 3002    0  3458     7  426     0  2  1  0 97  0 113 762284  12440   3332  34884 3151    0  3553    61  427     0  2  1  0 97   doitprod2:/var/log# grep -c processor /proc/cpuinfo  2   iostat 2   tps   Blk_czyt/s   Blk_zapis/s  Blk_czyt   Blk_zapis sda             166,00      7128,00        52,00      14256        104     Ok, after kill and start some processes is now fine. Thx for Your help anyway.
79216
I have the exact problem in 13.10 as this user .  Here are some screenshots:      Here are some screenshots from another user:     ifconfig and iwconfig outputs  $ ifconfig lo        Link encap:Local Loopback             inet addr:XXXXXX  Mask:XXXXXXX           inet6 addr: ::1/128 Scope:Host           UP LOOPBACK RUNNING  MTU:65536  Metric:1           RX packets:2243 errors:0 dropped:0 overruns:0 frame:0           TX packets:2243 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:0            RX bytes:209889 (209.8 KB)  TX bytes:209889 (209.8 KB)  wlan0     Link encap:Ethernet  HWaddr XXXXXXXXX             inet addr:XXXXXX  Bcast:XXXXXXXX  Mask:XXXXXXX           inet6 addr: XXXXXXX Scope:Link           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1           RX packets:5925 errors:0 dropped:0 overruns:0 frame:0           TX packets:3361 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:1000            RX bytes:2951818 (2.9 MB)  TX bytes:630579 (630.5 KB)  $ iwconfig lo        no wireless extensions.  wlan0     IEEE 802.11abgn  ESSID:"XXXXX"             Mode:Managed  Frequency:2.437 GHz  Access Point: XXXXXXXX           Bit Rate=72.2 Mb/s   Tx-Power=15 dBm              Retry  long limit:7   RTS thr:off   Fragment thr:off           Power Management:on           Link Quality=49/70  Signal level=-61 dBm             Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0           Tx excessive retries:153  Invalid misc:472   Missed beacon:0
34844
Ipconfig says that my IP is 192.168.0.108 C:\Users\vbcbu&gt;Reply from 192.168.0.108: Destination host unreachable.ip 'Reply' is not recognized as an internal or external command, operable program or batch file.  C:\Users\vbcbu&gt;ipconfig  Windows IP Configuration   Ethernet adapter Ethernet:     Media State . . . . . . . . . . . : Media disconnected    Connection-specific DNS Suffix  . :  Wireless LAN adapter Local Area Connection* 12:     Media State . . . . . . . . . . . : Media disconnected    Connection-specific DNS Suffix  . :  Wireless LAN adapter Local Area Connection* 13:     Media State . . . . . . . . . . . : Media disconnected    Connection-specific DNS Suffix  . :  Wireless LAN adapter Wi-Fi 2:     Connection-specific DNS Suffix  . : www.tendawifi.com    Link-local IPv6 Address . . . . . : fe80::3804:2d04:a591:7142%6    IPv4 Address. . . . . . . . . . . : 192.168.0.108    Subnet Mask . . . . . . . . . . . : 255.255.255.0    Default Gateway . . . . . . . . . : 192.168.0.1  Ethernet adapter Bluetooth Network Connection:     Media State . . . . . . . . . . . : Media disconnected    Connection-specific DNS Suffix  . :  C:\Users\vbcbu&gt;  I can ping router at 192.168.0.1 I can't ping 192.168.0.108 C:\Users\vbcbu&gt;ping 192.168.0.1  Pinging 192.168.0.1 with 32 bytes of data: Reply from 192.168.0.1: bytes=32 time=2ms TTL=64 Reply from 192.168.0.1: bytes=32 time=24ms TTL=64  Ping statistics for 192.168.0.1:     Packets: Sent = 2, Received = 2, Lost = 0 (0% loss), Approximate round trip times in milli-seconds:     Minimum = 2ms, Maximum = 24ms, Average = 13ms Control-C ^C C:\Users\vbcbu&gt;ping 192.168.0.8  Pinging 192.168.0.8 with 32 bytes of data: Reply from 192.168.0.108: Destination host unreachable. Reply from 192.168.0.108: Destination host unreachable. Reply from 192.168.0.108: Destination host unreachable. Reply from 192.168.0.108: Destination host unreachable.  Ping statistics for 192.168.0.8:     Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),  C:\Users\vbcbu&gt;ping 192.168.0.8  Pinging 192.168.0.8 with 32 bytes of data: Reply from 192.168.0.108: Destination host unreachable. Reply from 192.168.0.108: Destination host unreachable.
10826
What does "/" , "./", "../" represent while giving path?
25874
There was a previous bug affecting site traffic statistics showing -zero- for months (). This has been fixed in that it is now graphing the data.  It appears that previous data may be lost? The graphs below are from . I don't have access to any other sites' graphs to see if they are showing similar results.
35904
I am learning computer networks and looking for a way to simulate traceroute using the ping command. I think it has something to do with ttl, but I don't know how to develop that further.