[CentOS-es] Ayuda Rutas
Francesc Guitart
fguitart en gmx.com
Vie Mar 7 10:32:34 UTC 2014
El 07/03/2014 11:24, Francesc Guitart escribió:
> Hola César,
>
> Prueba añadiendo esta regla:
>
> $IPTABLES -I FORWARD -d 172.25.144.0/24 -i eth1 -j ACCEPT
>
> Por cierto, en cuanto a las reglas que me mandaste en el otro mail:
> $IPTABLES -A INPUT -s 192.168.0.0/24 -j ACCEPT
> $IPTABLES -A OUTPUT -d 172.25.144.0/24 -j ACCEPT
> $IPTABLES -A OUTPUT -p tcp -d 172.25.144.0/24 -j ACCEPT
> $IPTABLES -I OUTPUT -d 172.25.144.0/24 -j ACCEPT
> $IPTABLES -A POSTROUTING -t nat -o $EXTERNALIF -j MASQUERADE
>
> La primera y la cuarta son exactamente iguales. Elimina una de las dos.
> La tercera esta incluida dentro de la segunda (o la cuarta, como
> prefieras). Bórrala también.
>
Olvidé una cosa. La quita regla parece que funciona bien, pero para ser
exactos sería más bien:
$IPTABLES -t nat -A POSTROUTING -o $EXTERNALIF -j MASQUERADE
>
> El 07/03/2014 11:04, César Martinez escribió:
>> Hola Gracias por responder, paso por le proxy porque el cable del tunel
>> de datos esta conectado ahora directo al switch que esta en el segmento
>> 192.168.0.X, el isp creo unas rutas para enviar todo el trafico de datos
>> a la ip 192.168.0.1 que es la ip de mi proxy actualmente. Como te
>> menciono si bajo el firewall momentaneamente puedo hacer ping o entrar a
>> un recurso compartido de la red 172.25.144.4 que es actualmente donde
>> debo llegar, esta ip es un servidor windows que tiene una carpeta
>> compartida. Te adjunto la salida de los comandos, muchas gracias por tu
>> ayuda
>>
>> ip route
>> 181.113.66.72/29 dev eth0 proto kernel scope link src 181.113.66.78
>> 192.168.0.0/24 dev eth1 proto kernel scope link src 192.168.0.1
>> 172.25.144.0/24 via 192.168.0.3 dev eth1
>> 169.254.0.0/16 dev eth1 scope link
>> default via 181.113.66.73 dev eth
>>
>> ip route show table local
>> broadcast 181.113.66.79 dev eth0 proto kernel scope link src 181.113.66.78
>> broadcast 192.168.0.255 dev eth1 proto kernel scope link src 192.168.0.1
>> local 181.113.66.78 dev eth0 proto kernel scope host src 181.113.66.78
>> broadcast 127.255.255.255 dev lo proto kernel scope link src 127.0.0.1
>> broadcast 181.113.66.72 dev eth0 proto kernel scope link src 181.113.66.78
>> local 192.168.0.1 dev eth1 proto kernel scope host src 192.168.0.1
>> broadcast 192.168.0.0 dev eth1 proto kernel scope link src 192.168.0.1
>> broadcast 127.0.0.0 dev lo proto kernel scope link src 127.0.0.1
>> local 127.0.0.1 dev lo proto kernel scope host src 127.0.0.1
>> local 127.0.0.0/8 dev lo proto kernel scope host src 127.0.0.1
>>
>>
>> ifconfig -a
>> eth0 Link encap:Ethernet HWaddr 00:26:5A:84:C3:B0
>> inet addr:181.113.66.78 Bcast:181.113.66.79 Mask:255.255.255.248
>> inet6 addr: fe80::226:5aff:fe84:c3b0/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:322452 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:315335 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:218551617 (208.4 MiB) TX bytes:50814320 (48.4 MiB)
>> Interrupt:169 Base address:0xc000
>>
>> eth1 Link encap:Ethernet HWaddr 3C:4A:92:B2:92:E4
>> inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
>> inet6 addr: fe80::3e4a:92ff:feb2:92e4/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:401472 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:326596 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:60175972 (57.3 MiB) TX bytes:235191189 (224.2 MiB)
>> Interrupt:177 Memory:fbdf0000-fbe00000
>>
>> eth2 Link encap:Ethernet HWaddr 54:E6:FC:80:4C:C5
>> BROADCAST MULTICAST MTU:1500 Metric:1
>> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
>> Interrupt:90 Base address:0xa000
>>
>> 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:485 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:485 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:0
>> RX bytes:59577 (58.1 KiB) TX bytes:59577 (58.1 KiB)
>>
>> sit0 Link encap:IPv6-in-IPv4
>> NOARP MTU:1480 Metric:1
>> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:0
>> RX bytes:0 (0.0 b) TX bytes:0 (0.0 b
>>
>>
>>
>>
>> iptables -L -nChain INPUT (policy ACCEPT)
>> target prot opt source destination
>> DROP all -- 0.0.0.0/0 0.0.0.0/0 state INVALID
>> ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
>> ACCEPT all -- 192.168.0.0/24 0.0.0.0/0
>> ACCEPT 41 -- 0.0.0.0/0 0.0.0.0/0
>> ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 8 limit: avg 1/sec burst 5
>> ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0
>> REJECT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:137 reject-with icmp-port-unreachable
>> ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:20
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:21
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:1976
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:25
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:587
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:53
>> ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:53
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:110
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:143
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:443
>> ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:11200
>> ACCEPT all -- 192.168.0.0/24 0.0.0.0/0
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:1433 limit: avg 3/hour burst 5 LOG flags 0 level 4 prefix `Firewalled packet: MSSQL '
>> DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:1433
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6670 limit: avg 3/hour burst 5 LOG flags 0 level 4 prefix `Firewalled packet: Deepthrt '
>> DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6670
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6711 limit: avg 3/hour burst 5 LOG flags 0 level 4 prefix `Firewalled packet: Sub7 '
>> DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6711
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6712 limit: avg 3/hour burst 5 LOG flags 0 level 4 prefix `Firewalled packet: Sub7 '
>> DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6712
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6713 limit: avg 3/hour burst 5 LOG flags 0 level 4 prefix `Firewalled packet: Sub7 '
>> DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6713
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:12345 limit: avg 3/hour burst 5 LOG flags 0 level 4 prefix `Firewalled packet: Netbus '
>> DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:12345
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:12346 limit: avg 3/hour burst 5 LOG flags 0 level 4 prefix `Firewalled packet: Netbus '
>> DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:12346
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:20034 limit: avg 3/hour burst 5 LOG flags 0 level 4 prefix `Firewalled packet: Netbus '
>> DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:20034
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:31337 limit: avg 3/hour burst 5 LOG flags 0 level 4 prefix `Firewalled packet: BO '
>> DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:31337
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6000 limit: avg 3/hour burst 5 LOG flags 0 level 4 prefix `Firewalled packet: XWin '
>> DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:6000
>> DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpts:33434:33523
>> REJECT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:113 reject-with icmp-port-unreachable
>> REJECT 2 -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:0x17/0x02 limit: avg 5/min burst 5 LOG flags 0 level 4 prefix `Firewalled packet:'
>> REJECT tcp -- 0.0.0.0/0 0.0.0.0/0 reject-with tcp-reset
>> DROP all -- 0.0.0.0/0 0.0.0.0/0
>>
>> Chain FORWARD (policy ACCEPT)
>> target prot opt source destination
>> REJECT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:55347 reject-with icmp-port-unreachable
>> DROP all -- 0.0.0.0/0 0.0.0.0/0 state INVALID
>> ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
>> REJECT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:137 reject-with icmp-port-unreachable
>> REJECT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:138 reject-with icmp-port-unreachable
>> REJECT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:139 reject-with icmp-port-unreachable
>> REJECT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:137 reject-with icmp-port-unreachable
>> REJECT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:138 reject-with icmp-port-unreachable
>> REJECT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:139 reject-with icmp-port-unreachable
>> ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
>> ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state NEW
>> ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
>> LOG tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:0x17/0x02 limit: avg 5/min burst 5 LOG flags 0 level 4 prefix `Firewalled packet:'
>> REJECT tcp -- 0.0.0.0/0 0.0.0.0/0 reject-with tcp-reset
>> DROP all -- 0.0.0.0/0 0.0.0.0/0
>>
>> Chain OUTPUT (policy ACCEPT)
>> target prot opt source destination
>> ACCEPT all -- 0.0.0.0/0 172.25.144.0/24
>> ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state NEW
>> ACCEPT all -- 0.0.0.0/0 172.25.144.0/24
>> ACCEPT tcp -- 0.0.0.0/0 172.25.144.0/24
>> ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
>>
>>
>>
>>
>>
>>> Hola Cesar,
>>>
>>> Por favor, envía los mails a la lista. La discusión de tu problema se
>>> estaba realizando en ese canal. ¿Porqué cambiar?
>>>
>>> Si he entendido bien después de varios mensajes, tienes la interfaz del
>>> aparato que hace el túnel conectado directamente a la red interna.
>>> Entonces ¿porqué pasas por el firewall para ir de una oficina a otra?
>>> Hay algo que no he entendido bien. ¿Puedes explicar la situación actual
>>> desde el principio sin omitir nada?
>>>
>>> Añade por favor la salida de estos comandos:
>>>
>>> ip route
>>> ip route show table local
>>> ifconfig -a
>>> iptables -L -n
>>>
>>> Gracias.
>>>
>>>
>>
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>>
>
>
--
Francesc Guitart
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