Connected to the network but not the internet? [Solved]

GGG · 2013-10-12 01:41:05

I'm trying to install Arch from a USB, and I'm having trouble establishing a connection via ethernet. I'm trying to connect to the internet through a university network, and this is the output I'm getting:

root@archiso ~ # ping -c 1 poly.edu
PING poly.edu (128.238.1.62) 56(84) bytes of data.
64 bytes from poly-ad-vm-01.poly.edu (128.238.1.62): icmp_seq=1 ttl=126 time=1.05 ms

--- poly.edu ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 1.050/1.050/1.050/0/000 ms
root@archiso ~ # ping -c 1 google.com
PING google.com (74.125.226.229) 56(84) bytes of data.

--- google.com ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

1 root@archiso ~ # ping -c 1 archlinux.org
PING archlinux.org (66.211.214.131) 56(84) bytes of data.

--- archlinux.org ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

To the best of my abilities I've tried everything in the Beginners' Guide and Network Configuration, but without any luck. The problem, as far as I can tell, is that I'm connected to the network and can resolve domain names, but for some reason I am unable to actually connect to addresses other than local ones (e.g. poly.edu). Does anyone know why this is or what could be wrong? Is this problem addressed in the wiki and I misunderstood? If anyone has any useful information I would be very grateful.

Last edited by GGG (2013-10-12 06:23:34)

ewaller · 2013-10-12 02:27:59

please post the output of
ip link
ip addr
ip route

Also, is this wireless or wired?

GGG · 2013-10-12 04:24:05

Wired, as I mentioned.

root@archiso ~ # ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp9s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 08:9e:01:2f:4e:27 brd ff:ff:ff:ff:ff:ff
3: wlp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT qlen 1000
    link/ether 20:68:9d:06:b2:be brd ff:ff:ff:ff:ff:ff
root@archiso ~ # ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp9s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 08:9e:01:2f:4e:27 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.143/24 brd 192.168.0.255 scope global enp9s0
       valid_lft forever preferred_lft forever
    inet6 fdbc:b538:30a4:0:a9e:1ff:fe2f:4e27/64 scope global dynamic
       valid_lft 7187sec preferred_lft 3587sec
    inet6 fe80::a9e:1ff:fe2f:4e27/64 scope link
       valid_lft forever preferred_lft forever
3: wlp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
    link/ether 20:68:9d:06:b2:be brd ff:ff:ff:ff:ff:ff
root@archiso ~ # ip route
default via 192.168.0.1 dev enp9s0  metric 202
192.168.0.0/24 dev enp9s0  proto kernel  scope link  src 192.168.0.143  metric 202
192.168.0.143 via 127.0.0.1 dev lo  metric 202

Transcribed by hand, but I double-checked for typos

WonderWoofy · 2013-10-12 04:31:43

GGG wrote:

Wired, as I mentioned.

I just want to point out, that it is a common misconception that ethernet refers to a wired network, since the cable itself tends to be called an "ethernet cable". But ethernet is actually a term that refers to the interconnectivity between systems within a LAN. So if you were to be using wireless, you would still be using the ethernet. That is why ewaller was asking.

GGG · 2013-10-12 04:39:49

Oh. Sorry. Learned something new.

ewaller · 2013-10-12 05:25:05

Yeah, as WonderWoofy pointed out, 802.11 (Wireless) and 802.3 (Wired) are both Enternet. So is PPPoE, etc...

Regardless, the answer I needed was wireless Unfortunately, it all looks reasonable.

Here is something odd

ewaller$@$odin ~ 1001 %ping poly.edu
PING poly.edu (128.238.24.40) 56(84) bytes of data.
^C
--- poly.edu ping statistics ---
54 packets transmitted, 0 received, 100% packet loss, time 52999ms

ewaller$@$odin ~ [1]1002 %

So...

You can ping something (128.238.1.62) that is not on your local subnet ( 192.168.0.xxx)
I cannot ping something you can (poly.edu)
You've a default gateway through 192.168.0.1
You cannot ping goggle or arch, but you have correct a correct address for Goggle. I can ping that address.
Your get an address for Arch, but it is an address in Pennsylvania that I don't believe belongs to Arch. But, I can ping the address.

Weird stuff.
Do you have traceroute installed. Can you post the output of traceroute to poly.edu ? To Archlinux.org?

ewaller$@$odin ~ 1001 %traceroute poly.org
traceroute to poly.org (122.193.18.51), 30 hops max, 60 byte packets
 1  ewaller (192.168.1.1)  0.830 ms  1.163 ms  1.385 ms
 2  netblock-75-79-161-1.dslextreme.com (75.79.161.1)  10.347 ms  11.626 ms  12.623 ms
 3  lax1_cr1_3_0_306.dslextreme.com (66.51.202.17)  14.347 ms  15.102 ms  15.974 ms
 4  66.186.192.181 (66.186.192.181)  17.504 ms  18.201 ms  19.243 ms
 5  interface.cnc-noc.net (198.32.146.40)  21.877 ms  26.192 ms  26.637 ms
 6  219.158.30.241 (219.158.30.241)  196.430 ms  190.327 ms  193.243 ms
 7  219.158.97.85 (219.158.97.85)  183.070 ms  179.176 ms  180.509 ms
 8  219.158.97.97 (219.158.97.97)  257.659 ms  250.552 ms  251.352 ms
 9  219.158.99.158 (219.158.99.158)  259.138 ms  259.409 ms  264.161 ms
10  58.240.161.94 (58.240.161.94)  252.276 ms  252.609 ms  253.028 ms
11  58.240.162.238 (58.240.162.238)  251.919 ms  245.552 ms  246.490 ms
12  * * *
13  61.155.210.10 (61.155.210.10)  237.037 ms  238.456 ms  226.054 ms
14  61.155.208.97 (61.155.208.97)  250.611 ms  251.992 ms  252.454 ms
15  61.155.208.149 (61.155.208.149)  238.511 ms  239.898 ms  240.817 ms
16  61.155.208.25 (61.155.208.25)  235.127 ms !X * *
ewaller$@$odin ~ 1002 %traceroute archlinux.org
traceroute to archlinux.org (66.211.214.131), 30 hops max, 60 byte packets
 1  ewaller (192.168.1.1)  0.907 ms  1.162 ms  1.310 ms
 2  netblock-75-79-161-1.dslextreme.com (75.79.161.1)  10.615 ms  11.205 ms  13.036 ms
 3  lax1_cr1_gig_10_0_120.dslextreme.com (66.218.48.145)  13.792 ms  14.920 ms *
 4  gi3-3.ccr01.lax12.atlas.cogentco.com (38.104.230.157)  18.489 ms  18.904 ms  20.758 ms
 5  te0-4-0-0.mpd21.lax01.atlas.cogentco.com (154.54.84.213)  23.494 ms  24.097 ms te0-4-0-0.mpd22.lax01.atlas.cogentco.com (154.54.84.197)  24.635 ms
 6  be2068.mpd22.iah01.atlas.cogentco.com (154.54.7.157)  60.667 ms be2067.mpd21.iah01.atlas.cogentco.com (154.54.7.161)  53.911 ms be2068.mpd22.iah01.atlas.cogentco.com (154.54.7.157)  54.500 ms
 7  be2175.mpd22.atl01.atlas.cogentco.com (154.54.29.221)  75.390 ms  72.782 ms  73.029 ms
 8  be2170.mpd21.dca01.atlas.cogentco.com (154.54.31.106)  80.192 ms  78.670 ms  80.016 ms
 9  te3-3.ccr01.pit02.atlas.cogentco.com (154.54.40.82)  86.861 ms  87.111 ms te7-2.ccr01.pit02.atlas.cogentco.com (154.54.7.118)  86.675 ms
10  38.104.120.102 (38.104.120.102)  86.406 ms  86.948 ms  87.603 ms
11  cust02-ge-0-0.eri.velocity.net (66.211.250.2)  90.917 ms  89.568 ms  90.841 ms
12  dom0.archlinux.org (66.211.214.130)  83.180 ms !X  82.911 ms !X  83.908 ms !X
ewaller$@$odin ~ 1003 %

Last edited by ewaller (2013-10-12 05:26:03)

GGG · 2013-10-12 06:23:00

Alright, may have solved the problem. Was trying to do what you ask and I realized that I wasn't able to ping any outside sites from *any* computer on the network, even though I can access them just fine from a web browser. So I tried

root@archiso ~ # wget www.textfiles.com/art/groucho.art

and lo and behold, it worked! I guess the network just doesn't allow ping requests to go in or out. So yeah... there wasn't really a problem in the first place. Sorry about that. (^_^;) But thanks so much for your help!

Arch Linux

#1 2013-10-12 01:41:05

Connected to the network but not the internet? [Solved]

#2 2013-10-12 02:27:59

Re: Connected to the network but not the internet? [Solved]

#3 2013-10-12 04:24:05

Re: Connected to the network but not the internet? [Solved]

#4 2013-10-12 04:31:43

Re: Connected to the network but not the internet? [Solved]

#5 2013-10-12 04:39:49

Re: Connected to the network but not the internet? [Solved]

#6 2013-10-12 05:25:05

Re: Connected to the network but not the internet? [Solved]

#7 2013-10-12 06:23:00

Re: Connected to the network but not the internet? [Solved]

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