salve,
ho difficoltà a configurare il mio router, spero di riuscire a spiegarvi il problema.

il mio router è un Cisco Soho91, il mio problema è di configurare il router in modo da fare da interfaccia tra la rete aziendale e il gateway internet.
provo a spiegare la situazione:

rete aziendale indirizzi ip 192.168.1.XXX

router cisco, porta Eth0 192.168.1.1
porta Eth1 172.10.3.100

Indirizzo antenna per Adsl 172.10.3.5


con la configurazione che posto sotto, dal pc con ip 192.168.1.20 faccio il ping alla eth1 correttamente, mentre se faccio il ping a 172.10.3.5 ottengo "Richiesta Scaduta".

allego un pò di informazioni:

[B]sh r
[CODE]
codice:
Building configuration... 

Current configuration : 1216 bytes 
! 
version 12.3 
no service pad 
service timestamps debug datetime msec 
service timestamps log datetime msec 
service password-encryption 
! 
hostname Router 
! 
no logging buffered 
enable secret 5 $1$oGT.$qYhs/lOUcRKDlyWWuT1fO1 
! 
username Router password 7 15000E010B3E2E 
no aaa new-model 
ip subnet-zero 
! 
interface Ethernet0 
 description LAN 
 ip address 192.168.1.1 255.255.255.0 
 ip access-group 130 in 
 ip nat inside 
! 
interface Ethernet1 
 description WAN 
 ip address 172.10.3.100 255.255.255.0 
 ip nat outside 
 duplex auto 
! 
interface Dialer0 
 no ip address 
! 
interface Dialer1 
 no ip address 
 ip nat outside 
! 
router rip 
 version 2 
 network 172.10.0.0 
 network 192.168.1.0 
 no auto-summary 
! 
ip default-gateway 172.10.3.5 
ip nat inside source list 102 interface Dialer1 overload 
ip classless 
ip route 0.0.0.0 0.0.0.0 Ethernet1 
ip http server 
no ip http secure-server 
! 
access-list 130 deny   udp any any eq 52001 
access-list 130 permit ip any any 
! 
line con 0 
 password 7 025756085F555D70 
 logging synchronous 
 login 
 no modem enable 
line aux 0 
line vty 0 4 
 exec-timeout 120 0 
 password 7 11584B564341595D 
 logging synchronous 
 login local 
 length 0 
! 
scheduler max-task-time 5000 
! 
end

sh ip route
codice:
Codes: C - connected, S $ s™)tic, R - RIP, M - mobile, B - BGP 
       D - EIGRP, EX - DIGRP external, O - OSPF, IA - OSPF inter area 
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 
       E1 - OSPF external type 1, E2 - OSPF external type 2 
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 
       ia - IS-IS inter area, * - candidate default, U - per-user static route 
       o - ODR, P - periodic downloaded static route 

Gateway of last resort is 0.0.0.0 to network 0.0.0.0 

     217.141.253.0/32 is subnetted, 1 subnets 
R       217.141.253.1 [120/1] via 192.168.1.253, 00:00:07, Ethernet0 
     172.10.0.0/24 is subnetted, 1 subnets 
C       172.10.3.0 is directly connected, Ethernet1 
C    192.168.1.0/24 is directly connected, Ethernet0 
S*   0.0.0.0/0 is directly connected, Ethernet1

sh ip int brief
codice:
Interface                  IP-Address      OK? Method Status                Protocol 
Dialer0                    unassigned      YES NVRAM  up                    up 
Dialer1                    unassigned      YES NVRAM  up                    up 
Ethernet0                  192.168.1.1     YES NVRAM  up                    up 
Ethernet1                  172.10.3.100    YES NVRAM  up                    up

sh ip protocols
codice:
Routing Protocol is "rip" 
  Sending updates every 30 seconds, next due in 2 seconds 
  Invalid after 180 seconds, hold down 180, flushed after 240 
  Outgoing update filter list for all interfaces is not set 
  Incoming update filter list for all interfaces is not set 
  Redistributing: rip 
  Default version control: send version 2, receive version 2 
    Interface             Send  Recv  Triggered RIP  Key-chain 
    Ethernet0             2     2 
    Ethernet1             2     2 
  Automatic network summarization is not in effect 
  Maximum path: 4 
  Routing for Networks: 
    172.10.0.0 
    192.168.1.0 
  Routing Information Sources: 
    Gateway         Distance      Last Update 
    192.168.1.253         120      00:00:08   <--- è corretto???
  Distance: (default is 120)

sh protocols
codice:
Global values: 
  Internet Protocol routing is enabled 
Dialer0 is up, line protocol is up 
Dialer1 is up, line protocol is up 
Ethernet0 is up, line protocol is up 
  Internet address is 192.168.1.1/24 
Ethernet1 is up, line protocol is up 
  Internet address is 172.10.3.100/24

sh ver
codice:
Cisco Internetwork Operating System Software 
IOS (tm) SOHO91 Software (SOHO91-K9OY6-M), Version 12.3(2)XC2, EARLY DEPLOYMENT RELEAS 
E SOFTWARE (fc1) 
Synched to technology version 12.3(1.6)T 
Technical Support: http://www.cisco.com/techsupport 
Copyright (c) 1986-2004 by cisco Systems, Inc. 
Compiled Thu 04-Mar-04 01:24 by ealyon 
Image text-base: 0x800131E8, data-base: 0x80A40300 

ROM: System Bootstrap, Version 12.2(11r)YV1, RELEASE SOFTWARE (fc1) 
ROM: SOHO91 Software (SOHO91-K9OY6-M), Version 12.3(2)XC2, EARLY DEPLOYMENT RELEASE SO 
FTWARE (fc1)

qualcuno può aiutarmi?

sono stato abbastanza chiaro?

qualcuno può darmi indicazioni su come fare degub?


grazie in anticipo

db