Internet Gateway@Router NetBSD 3.1 dengan ipnat ( Jaring Wireless DSL )

 

 

Equipment/perkakas/kelengkapan:

 

 

 

1- Box with NetBSD 3.1 installed - dalam kes ni aku guna old spec, p200/166mmx, RAM 40MB

( later nak test kat p120/100/75 dan 486 ):

 

cpu0 at mainbus0: (uniprocessor)

cpu0: Intel Pentium/MMX (586-class), 187.14 MHz, id 0x544

cpu0: features 8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>

cpu0: features 8001bf<MMX>

 

 

 

 

2- 2 keping nic tak kisah brand 10-base/100-base, janji jalan ( onboard pun takpe ). Check guna command "dmesg | less"

 

ex0 at pci0 dev 9 function 0: 3Com 3c905C-TX 10/100 Ethernet with mngmt (rev. 0x74)

ex0: interrupting at irq 10

ex0: MAC address 00:01:02:8c:df:0c

bmtphy0 at ex0 phy 24: Broadcom 3c905C internal PHY, rev. 6

bmtphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto

 

vr0 at pci0 dev 10 function 0: VIA VT3043 (Rhine) 10/100 Ethernet

vr0: interrupting at irq 11

vr0: Ethernet address: 00:90:fe:00:eb:bd

dmphy0 at vr0 phy 8: DM9101 (AMD Am79C873) 10/100 media interface, rev. 0

dmphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto

 

 

3-  ipnat enabled ( kalau belum enable, aku akan guide nanti how to enable )

4-  "seketul" modem wireless DSL jaring SOMA

5-  ( optional ) - hub atau switch untuk sambung ke client

6-  ( optional ) - UTP crosscable untuk sambung ke client ( 1 client saja )

 

 

Cara2:

Mula2 pastikan NetBSD anda dah install cun.. configure ip NIC anda:

1- NIC1 ke modem jaring

2- NIC2 ke LAN/client

NIC 1 aku guna 3Com 3C509C, NIC2 aku guna Laneed ( chipset via rhine ),

so check dalam sistem, ada detect ke tak.. guna:

 

 

#ifconfig -a

 

 

so syntax ex0 untuk 3Com, vr0 untuk via rhine.. bagi yg confuse atau tak biasa dengan BSD-style

punye NIC name nih.. boleh guna "ifconfig -a" atau check ngan command "dmesg | less"

 

 

 

 

 

Setkan ip NIC ke modem dulu, cara mudah + simple, set DHCP request saja je NIC1 ( ex0 ):

 

 

 

Internet Software Consortium DHCP Client V3.0.1rc11

Copyright 1995-2002 Internet Software Consortium.

All rights reserved.

For info, please visit http://www.isc.org/products/DHCP

 

Listening on BPF/ex0/00:01:02:8c:df:0c

Sending on BPF/ex0/00:01:02:8c:df:0c

Sending on Socket/fallback

DHCPREQUEST on ex0 to 255.255.255.255 port 67

DHCPACK from 192.168.0.1

 

bound to 202.190.132.94 -- renewal in 13643 seconds.

 

 

 

 

 

selepas itu setkan ip untuk NIC2 ( vr0 ) untuk sambung ke LAN:

 

 

 

 

Periksa sekali lagi untuk pastikan ia betul2 menjadi/sempurna:

 

ex0: flags=8863

capabilities=7

enabled=0

address: 00:01:02:8c:df:0c

media: Ethernet autoselect (10baseT)

status: active

inet 202.190.132.94 netmask 0xfffffc00 broadcast 202.190.135.255

inet6 fe80::201:2ff:fe8c:df0c%ex0 prefixlen 64 scopeid 0x1

 

vr0: flags=8843

lo0: flags=8009

inet 127.0.0.1 netmask 0xff000000

inet6 ::1 prefixlen 128

inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3

 

ok.. dua2 dah menjadi.. untuk memastikan perubahan/setting ip ini tetap/permanent, boleh set ip kat /etc/rc.conf ataupun menggunakan cara "lama" set pada /etc/rc.local. Contoh disini set kat rc.local.. edit file /etc/rc.local guna editor ( vi, nano, pico, dan lain2 ) contoh disini guna nano:

 

 

dan edit, tambah baris tadi:

 

# Add your local daemons here.

#

dhclient ex0

ifconfig vr0 10.0.0.1 netmask 255.255.255.0

exit dan save..

 

 

 

 

Ok part setting ip dah setel.. actually masa ni, kat box NetBSD dah boleh surf/browse masuk

internet etc2.. boleh test:

 

 

Server: 61.6.32.163

Address: 61.6.32.163#53

 

Non-authoritative answer:

www.yahoo.com canonical name = www.yahoo-ht3.akadns.net.

Name: www.yahoo-ht3.akadns.net

Address: 209.131.36.158

 

ping www.yahoo.com

PING www.yahoo-ht3.akadns.net (209.131.36.158): 56 data bytes

64 bytes from 209.131.36.158: icmp_seq=0 ttl=49 time=602.937 ms

64 bytes from 209.131.36.158: icmp_seq=1 ttl=50 time=533.233 ms

64 bytes from 209.131.36.158: icmp_seq=2 ttl=50 time=973.181 ms

64 bytes from 209.131.36.158: icmp_seq=3 ttl=50 time=343.097 ms

64 bytes from 209.131.36.158: icmp_seq=4 ttl=50 time=543.037 ms

 

####################################################

 

So masuk part kedua..

part nih cuma nak setkan box NetBSD as network gateway ( dan as firewall kalau mahu,tapi bab tu aku tak

kaver la kat sini )

 

setkan di /etc/rc.conf guna editor anda, tambahkan baris ini:

 

 

dalam direktori /etc tambahkan satu fail bernama ipnat.conf dan edit/tambah baris2 yg akan ditunjukkan dibawah:

 

 

nano /etc/ipnat.conf

 

map ex0 10.0.0.0/24 -> 0/32 proxy port ftp ftp/tcp

map ex0 10.0.0.0/24 -> 0/32 portmap tcp/udp 10000:20000

map ex0 10.0.0.0/24 -> 0/32

 

 

save dan exit... 

selepas itu... Flush, dan run ipnat:

 

# ipnat -f /etc/ipnat.conf

 

periksa table ipnat:

 

 

List of active MAP/Redirect filters:

map ex0 10.0.0.0/24 -> 0.0.0.0/32 proxy port ftp ftp/tcp

map ex0 10.0.0.0/24 -> 0.0.0.0/32 portmap tcp/udp 10000:20000

map ex0 10.0.0.0/24 -> 0.0.0.0/32

 

 

Ok dah jalan... pada client pc, setkan ip serta default gateway 10.0.0.1 ( dalam kes ini menggunakan

windows XP ):

 

Subnet Mask . . . . . . . . . . . : 255.255.255.0

Default Gateway . . . . . . . . . : 10.0.0.1

 

setelah siap, sila uji connection ke internet...

 

 

Pinging www.yahoo-ht3.akadns.net [209.131.36.158] with 32 bytes of data:

 

Reply from 209.131.36.158: bytes=32 time=406ms TTL=49

Reply from 209.131.36.158: bytes=32 time=315ms TTL=48

Reply from 209.131.36.158: bytes=32 time=1084ms TTL=49

Reply from 209.131.36.158: bytes=32 time=379ms TTL=48

 

Ping statistics for 209.131.36.158:

 

Approximate round trip times in milli-seconds:

 

 

 

 

 

walla!! dah jalan.. maka anda boleh tambah seberapa banyak client yg anda suka.. selamat mencuba!

 

 

 

29/ogos/2007 12:5am