[Masq] Cannot ping with new internet account !!

S. Maneetanont Fri, 28 Dec 2001 04:59:06 -0800

Hello,

My linux box (Redhat 6.2) is still working fine with my existing account. All PCs in my Lan at home can surf Internet no problem.I have 56 k internal PCI modem while the my ISP modem is 33.6 k.Now, the ISP just added some new 56 k modems at their end. After bought their new air-time internet package, I got new logon ID and new dial-in tel number.. After modifing some dial scripts in the server, I connected to my new account.The modem sounded and connected, and ppp link established, BUT I cannot surf net.I can ping locally but not outside..I pinged to 203.154.136.211 which is the address of my ppp-0 (dynamicly given from ISP)..the machine blank for a long while and given the below result.I cannot ping to ISP end (203.154.136.194)...all ping packages lost. I don't know what is wrong. ...Below is what I dumped from various commands suggested in Section 5 Testing of "How to" for your info.. Please help ...thanks in advance..

ps: I am sending this email with my old internet account which is still working fine !!!!

PING 203.154.136.211 (203.154.136.211) from 203.154.136.211 : 56(84) bytes of da

ta.

64 bytes from 203.154.136.211: icmp_seq=0 ttl=255 time=0.1 ms

64 bytes from 203.154.136.211: icmp_seq=1 ttl=255 time=80000.2 ms

64 bytes from 203.154.136.211: icmp_seq=2 ttl=255 time=160000.2 ms

--- 203.154.136.211 ping statistics ---

268 packets transmitted, 4 packets received, 98% packet loss

round-trip min/avg/max = 0.1/120000.1/240000.2 ms

[root@myserver smile]# netstat -rn

Kernel IP routing table

Destination Gateway Genmask Flags MSS Window irtt Iface

10.0.0.3 0.0.0.0 255.255.255.255 UH 0 0 0 eth0

203.154.136.194 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0

10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0

127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo

0.0.0.0 203.154.136.194 0.0.0.0 UG 0 0 0 ppp0

[root@myserver smile]# /sbin/ifconfig

eth0 Link encap:Ethernet HWaddr 00:20:78:11:67:BF

inet addr:10.0.0.3 Bcast:10.255.255.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:648517 errors:0 dropped:0 overruns:0 frame:0

TX packets:1153665 errors:0 dropped:0 overruns:0 carrier:0

collisions:948753 txqueuelen:100

Interrupt:5 Base address:0xa000

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

UP LOOPBACK RUNNING MTU:3924 Metric:1

RX packets:149 errors:0 dropped:0 overruns:0 frame:0

TX packets:149 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

ppp0 Link encap:Point-to-Point Protocol

inet addr:203.154.136.211 P-t-P:203.154.136.194 Mask:255.255.255.255

UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1

RX packets:9 errors:1 dropped:0 overruns:0 frame:1

TX packets:175 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:10

[root@myserver smile]# cat /proc/sys/net/ipv4/ip_forward

[root@myserver smile]# /sbin/ipchains -n -L

Chain input (policy ACCEPT):

Chain forward (policy DENY):

target prot opt source destination ports

MASQ all ------ 10.0.0.0/8 0.0.0.0/0 n/a

Chain output (policy ACCEPT):

[root@myserver smile]# dmesg

. . . .

... autorun DONE.

VFS: Mounted root (ext2 filesystem) readonly.

Freeing unused kernel memory: 64k freed

Adding Swap: 265032k swap-space (priority -1)

sb: dsp reset failed.

tulip.c:v0.92 4/17/2000 Written by Donald Becker <[EMAIL PROTECTED]>

http://www.scyld.com/network/tulip.html

eth0: ADMtek Comet rev 17 at 0xc403a000, 00:20:78:11:67:BF, IRQ 5.

PPP: version 2.3.7 (demand dialling)

PPP line discipline registered.