求达人相助

johana@johana-desktop:~$ plog
May 12 12:56:54 johana-desktop pppd[6423]: Using interface ppp0
May 12 12:56:54 johana-desktop pppd[6423]: Connect: ppp0 <--> eth0
May 12 12:56:57 johana-desktop pppd[6423]: Remote message: Welcome to use MA5200, Huawei Tech.^J^M
May 12 12:56:57 johana-desktop pppd[6423]: PAP authentication succeeded
May 12 12:56:57 johana-desktop pppd[6423]: peer from calling number 00:E0:FC:06:E3:E2 authorized
May 12 12:56:57 johana-desktop pppd[6423]: not replacing existing default route via 172.24.16.1
May 12 12:56:57 johana-desktop pppd[6423]: Cannot determine ethernet address for proxy ARP
May 12 12:56:57 johana-desktop pppd[6423]: local IP address 172.24.65.188
May 12 12:56:57 johana-desktop pppd[6423]: remote IP address 24.24.24.24
May 12 12:56:57 johana-desktop pppd[6423]: primary   DNS address 211.95.129.161
johana@johana-desktop:~$ ifconfig
eth0     Link encap:Ethernet HWaddr 00:14:2A:73:4A:DA
      inet addr:172.24.30.227 Bcast:172.24.31.255 Mask:255.255.224.0
      inet6 addr: fe80::214:2aff:fe73:4ada/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
      RX packets:1016 errors:0 dropped:0 overruns:0 frame:0
      TX packets:821 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:1214958 (1.1 MiB) TX bytes:95328 (93.0 KiB)
      Interrupt:21 Base address:0x8c00

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:5 errors:0 dropped:0 overruns:0 frame:0
      TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:268 (268.0 b) TX bytes:268 (268.0 b)

ppp0     Link encap:Point-to-Point Protocol
      inet addr:172.24.65.188 P-t-P:24.24.24.24 Mask:255.255.255.255
      UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
      RX packets:13 errors:0 dropped:0 overruns:0 frame:0
      TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:3
      RX bytes:539 (539.0 b) TX bytes:64 (64.0 b)

上不起外网   不知道如何上