Router woes

[whatthefunk]

Just got a new internet connection. I want to run a cable to my wireless router, like I had before. But for some reason my wireless router isnt getting the internet signal. Wireless devices can connect, but cant access the internet. Oddly, I can run a cable from the wireless router to my pc and get internet through there. Also, I cant access the admin interfaces for either my wireless router or my modem. How can I gain access to my hardware and hopefully get wireless working?

ifconfig output

eth0      Link encap:Ethernet  HWaddr bc:5f:f4:1c:46:d2                                                                                                                                                              
          inet6 addr: 2001:a452:ea:a100:e169:1b57:5d43:7146/64 Scope:Global                                                                                                                                          
          inet6 addr: fe80::be5f:f4ff:fe1c:46d2/64 Scope:Link                                                                                                                                                        
          inet6 addr: 2001:a452:ea:a100:be5f:f4ff:fe1c:46d2/64 Scope:Global                                                                                                                                          
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1                                                                                                                                                         
          RX packets:6997 errors:0 dropped:2 overruns:0 frame:0
          TX packets:6585 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:4852506 (4.8 MB)  TX bytes:943530 (943.5 KB)

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:65536  Metric:1
          RX packets:251 errors:0 dropped:0 overruns:0 frame:0
          TX packets:251 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:19792 (19.7 KB)  TX bytes:19792 (19.7 KB)

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:153.199.67.119  P-t-P:118.23.62.123  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1454  Metric:1
          RX packets:6917 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6451 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:4694406 (4.6 MB)  TX bytes:779510 (779.5 KB)

sudo lshw -class network output

description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: eth0
       version: 06
       serial: bc:5f:f4:1c:46:d2
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:46 ioport:d000(size=256) memory:dc104000-dc104fff memory:dc100000-dc103fff

[Teunis]

You mean to say you have a separate modem and router?

And you can connect your computer via a wire to the router and this will deliver internet, no doubt via the modem, right?
But a wireless connection from the PC will only get to the router, not onward to the internet.

You can't access the interfaces of either router or modem.

Sounds like a problem with the WIFI setup in the router, not with the PC or modem.

Sooooo, the question is: "What's the hardware, modem and especially router"?