adsl, ericsson hm220d, NO internet :-(
ho una rete casalinga fatta cosi':
_________
| modem |
---------
|
|eth0 ip eth1 = 192.168.0.1
----- ip eth2 = 192.168.1.1
eth1| |eth2
-----------| A |-----------
| ----- |
| |
_____ _____
| | | |
| B | | C |
----- -----
la rete e' perfettamente funzionante con la connessione dialup mediante modem
56k (ovviamente rispetto allo schema qua sopra il modem non e' connesso a eth0
di "A" ma alla seriale)
ho sottoscritto un contratto adsl alice 256 ed ho comperato il modem in
oggetto. l'ho configurato secondo delle istruzioni che ho trovato in rete,
in pratica ho lasciato l'ip di default 192.168.254.254 e relativa netmask ed
ho posto VP=8 e VC=35, "encapsulation type=LLC" e scelto "mode=
bridged/RFC1483" , "ADSL mode=multimode" e lo ho collegato mediante il cavo
rj45 incluso alla eth0 del pc "A".
sul modem si accendono regolarmente i led relativi alla connessione adsl e
alla mia scheda ethernet.
ho poi lanciato pppoeconf che ha trovato la connessione adsl sulla eth0
tuttavia non riesco ad uscire su internet, ho cambiato piu' volte
/etc/network/interfaces ma senza successo, eppure l'output di netstat -nr
sembrerebbe essere giusto (ovviamente non per conoscenza personale ma...dalle
ricerche fatte su google :-DDD
topolino:~# cat /etc/network/interfaces
# /etc/network/interfaces -- configuration file for ifup(8), ifdown(8)
# The loopback interface
auto lo
iface lo inet loopback
auto eth1
iface eth1 inet static
address 192.168.0.1
netmask 255.255.255.0
auto eth2
iface eth2 inet static
address 192.168.1.1
netmask 255.255.255.0
topolino:~# netstat -nr
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.100.1 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
0.0.0.0 192.168.100.1 0.0.0.0 UG 0 0 0 ppp0
ifconfig limitatamente alle "stanze" relative a eth0 e ppp0:
eth0 Link encap:Ethernet HWaddr 00:01:02:D9:26:A5
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1405 errors:0 dropped:0 overruns:0 frame:0
TX packets:1149 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:94554 (92.3 KiB) TX bytes:96879 (94.6 KiB)
Interrupt:9 Base address:0x6800
ppp0 Link encap:Point-to-Point Protocol
inet addr:80.183.113.165 P-t-P:192.168.100.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:1211 errors:0 dropped:0 overruns:0 frame:0
TX packets:955 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:55084 (53.7 KiB) TX bytes:64133 (62.6 KiB)
topolino:~# cat /etc/ppp/peers/dsl-provider |grep -i noipdef
noipdefault
per completare il quadro, qui sotto c'e' /var/lib/iptables/active (funziona
per questa connessione che sto facendo in dialup e sto scrivendo dal pc "C")
# Generated by iptables-save v1.2.6a on Sat Jan 17 18:21:56 2004
*mangle
:PREROUTING ACCEPT [145:9193]
:INPUT ACCEPT [105:6848]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [75:9516]
:POSTROUTING ACCEPT [75:9516]
COMMIT
# Completed on Sat Jan 17 18:21:56 2004
# Generated by iptables-save v1.2.6a on Sat Jan 17 18:21:56 2004
*nat
:PREROUTING ACCEPT [41:2321]
:POSTROUTING ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
[2:128] -A PREROUTING -p tcp -m tcp --dport 4662 -j DNAT --to-destination 192.168.1.2
[0:0] -A PREROUTING -p tcp -m tcp --dport 4711 -j DNAT --to-destination 192.168.1.2
[0:0] -A PREROUTING -p udp -m udp --dport 4672 -j DNAT --to-destination 192.168.1.2
[0:0] -A POSTROUTING -s 192.168.0.1 -o ppp+ -j MASQUERADE
[0:0] -A POSTROUTING -s 192.168.1.1 -o ppp+ -j MASQUERADE
[0:0] -A POSTROUTING -s 192.168.0.2 -o ppp+ -j MASQUERADE
[0:0] -A POSTROUTING -s 192.168.1.2 -o ppp+ -j MASQUERADE
COMMIT
# Completed on Sat Jan 17 18:21:56 2004
# Generated by iptables-save v1.2.6a on Sat Jan 17 18:21:56 2004
*filter
:INPUT ACCEPT [48:3120]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [35:4556]
[0:0] -A INPUT -i lo -j ACCEPT
[0:0] -A INPUT -i eth0 -p icmp -m state --state ESTABLISHED -j ACCEPT
[0:0] -A INPUT -i eth0 -p tcp -m state --state ESTABLISHED -j ACCEPT
[0:0] -A INPUT -i eth0 -p udp -m state --state ESTABLISHED -j ACCEPT
[0:0] -A INPUT -i eth1 -p icmp -m state --state ESTABLISHED -j ACCEPT
[0:0] -A INPUT -i eth1 -p tcp -m state --state ESTABLISHED -j ACCEPT
[0:0] -A INPUT -i eth1 -p udp -m state --state ESTABLISHED -j ACCEPT
[2:56] -A INPUT -p icmp -j ACCEPT
[0:0] -A INPUT -i ppp0 -m state --state RELATED,ESTABLISHED -j ACCEPT
[54:3624] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
[0:0] -A INPUT -p tcp -m tcp --dport 22 --tcp-flags SYN,RST,ACK SYN -j ACCEPT
[0:0] -A INPUT -i eth2 -p tcp -m tcp --dport 20 -j ACCEPT
[0:0] -A INPUT -i eth2 -p tcp -m tcp --dport 21 -j ACCEPT
[0:0] -A INPUT -i eth1 -p tcp -m tcp --dport 20 -j ACCEPT
[0:0] -A INPUT -i eth1 -p tcp -m tcp --dport 21 -j ACCEPT
[0:0] -A INPUT -i ppp0 -p tcp -m tcp --dport 20 -j REJECT --reject-with icmp-port-unreachable
[0:0] -A INPUT -i ppp0 -p tcp -m tcp --dport 21 -j REJECT --reject-with icmp-port-unreachable
[0:0] -A INPUT -i ppp0 -p tcp -m tcp --dport 5901 -j ACCEPT
[0:0] -A INPUT -i ppp0 -p tcp -m tcp --dport 5902 -j ACCEPT
[0:0] -A INPUT -s 10.0.0.0/255.0.0.0 -i ppp0 -j DROP
[0:0] -A INPUT -s 127.0.0.0/255.0.0.0 -i ppp0 -j DROP
[0:0] -A INPUT -s 172.16.0.0/255.240.0.0 -i ppp0 -j DROP
[0:0] -A INPUT -s 192.168.0.0/255.255.0.0 -i ppp0 -j DROP
[1:48] -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -j DROP
[0:0] -A OUTPUT -o lo -j ACCEPT
[40:4960] -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
COMMIT
# Completed on Sat Jan 17 18:21:56 2004
grazie dell'aiuto
aldo
--
un newbie per i newbie: http://aldomaggi.supereva.it/linux.html
Chat: Turms su #lugroma #linux-facile #debian.it (calvino.freenode.net)
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