I can ping but not browse or download.

[heviejob]

I have a ubuntu server 9.04 used to authenticate hotspot users and is connected to a mikrotik router.
I can ping and traceroute domains but i cannot browse or download anything. Dns is resolving fine. What may be the issue?

[heviejob]

I forgot to mention that comps on the same subnet can browse and download.

[doas777]

so you could ping and nslookup www.google.com, but you can't find it in your browser?

do you have any proxy setting configured on the clients, or their browsers?

[heviejob]

I have no proxies set up on the network. It was working fine before but stopped. The browser resolves domains fine.nslookup works.
$ nslookup gmail.com
Server: 192.168.1.1
Address: 192.168.1.1#53

Non-authoritative answer:
Name: gmail.com
Address: 209.85.227.83
Name: gmail.com
Address: 209.85.227.17
Name: gmail.com
Address: 209.85.227.18
Name: gmail.com
Address: 209.85.227.19

I have looked at the gateway and routes but not working.
I have masquerading enabled on the router for subnet 192.168.1.0/24 and router ip is 192.168.1.1 and its the gateway. Could it be an issue with routing?

[doas777]

I have no proxies set up on the network. It was working fine before but stopped. The browser resolves domains fine.nslookup works.
$ nslookup gmail.com
Server: 192.168.1.1
Address: 192.168.1.1#53

Non-authoritative answer:
Name: gmail.com
Address: 209.85.227.83
Name: gmail.com
Address: 209.85.227.17
Name: gmail.com
Address: 209.85.227.18
Name: gmail.com
Address: 209.85.227.19

I have looked at the gateway and routes but not working.
I have masquerading enabled on the router for subnet 192.168.1.0/24 and router ip is 192.168.1.1 and its the gateway. Could it be an issue with routing?

it can definetly be a routing issue, if you do not have a default route, or the route is malformed.

what is the output of


sudo ifconfig
sudo route

[heviejob]

$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:0b:cd:be:eb:2f
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:20

eth1 Link encap:Ethernet HWaddr 00:a1:b0:20:93:98
inet addr:192.168.1.159 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::2a1:b0ff:fe20:9398/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:151027 errors:0 dropped:0 overruns:0 frame:0
TX packets:114276 errors:0 dropped:0 overruns:0 carrier:1
collisions:0 txqueuelen:1000
RX bytes:21187982 (21.1 MB) TX bytes:13399238 (13.3 MB)
Interrupt:16 Memory:fc510000-fc5100ff

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:32 errors:0 dropped:0 overruns:0 frame:0
TX packets:32 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2192 (2.1 KB) TX bytes:2192 (2.1 KB)

and

sudo route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 eth1
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
link-local * 255.255.0.0 U 1000 0 0 eth1
default 192.168.1.1 0.0.0.0 UG 100 0 0 eth1

[heviejob]

when i fetch gmail i get

wget gmail.com
--2010-05-13 00:21:11-- http://gmail.com/
Resolving gmail.com... 209.85.227.17, 209.85.227.83, 209.85.227.18, ...
Connecting to gmail.com|209.85.227.17|:80... failed: Connection timed out.
Connecting to gmail.com|209.85.227.83|:80..

[heviejob]

I also have the same issue! what could be the problem?

[Iowan]

Moved #8 to this thread from here (http://ubuntuforums.org/showthread.php?t=1373462).
Please do not cross post, or post the same thing in multiple locations.Confuses people - me in particular ;)

I presume you already tried checking MTU? Sometimes disabling IPv6 helps.

[jedan83]

I have a ubuntu server 11.04 used to authenticate hotspot users and is connected to a mikrotik router. I can ping and traceroute domains but i cannot browse or download anything. Dns is resolving fine. What may be the issue? tanks