Date: Mon, 6 Nov 2000 09:58:52 +0800 From: Greg Lehey <grog@lemis.com> To: Julian Elischer <julian@elischer.org> Cc: mobile@FreeBSD.org Subject: 802.11b access in Singapore Changi airport (was: cool) Message-ID: <20001106095852.A3648@sydney.worldwide.lemis.com> In-Reply-To: <20000615084805.E809@sydney.worldwide.lemis.com>; from grog@lemis.com on Thu, Jun 15, 2000 at 08:48:05AM -0700 References: <Pine.BSF.4.10.10006140050210.58746-100000@InterJet.elischer.org> <20000615084805.E809@sydney.worldwide.lemis.com>
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On Thursday, 15 June 2000 at 8:48:05 -0700, Greg Lehey wrote:
> On Wednesday, 14 June 2000 at 1:00:27 -0700, Julian Elischer wrote:
>>
>> So, if you are in the Singapore Changi international airport,
>> the internet center in the transit area will loan you for FREE,
>> a wavelan PC-CARD.
>>
>> So here I am waiting for my next flight and I'm on the net!
>> (well they hold your passport in exchange but that's ok)
>>
>> I couldn;t get teh DHCP client to work,
>> It kept saying:
>>
>>
>> jules# /sbin/dhclient
>> ifconfig: ioctl (SIOCAIFADDR): File exists
>> Listening on BPF/wi0/00:60:1d:1e:42:6c
>> Sending on BPF/wi0/00:60:1d:1e:42:6c
>> Can't find free bpf: No such file or directory
>> exiting.
>>
>> And the log files showed..
>>
>> Jun 14 00:54:37 jules /kernel: rtinit: wrong ifa (0xc0f85980) was (0xc0ee3000)
>> Jun 14 00:54:37 jules dhclient: Can't find free bpf: No such file or directory
>> Jun 14 00:54:37 jules dhclient: exiting.
>>
>> So I just did:
>> # wicontrol -i wi0 -p 1
>> # tcpdump
>> eventually a packet showed up, from the router at 192.100.100.1
>> so I just grabbed 192.100.100.2 (SHHHHHHHH!)
>>
>> now if I can get dhcp to work this would be great!
>
> Great stuff. Last but one time I was there (must have been a year
> ago) I tried one of their Internet Cafe things, but I couldn't find an
> active jack.
>
> So how do they expect people to get these things to work without DHCP?
OK, I'm now in Changi myself, and I appear to be connected the way it
was intended. You need to set the SSID to "ANY", no encryption,
managed mode. The people I spoke to didn't know any of this, but we
barely got by. Once you have that, you get:
=== grog@sydney (/dev/ttyp6) ~ 1 -> wicontrol -i wi0
NIC serial number: [ 00UT28336821 ]
Station name: [ FreeBSD WaveLAN/IEEE node ]
SSID for IBSS creation: [ ANY ]
Current netname (SSID): [ SIA Lounge Wireless ]
Desired netname (SSID): [ ]
Current BSSID: [ 00:60:1d:f2:2a:17 ]
Channel list: [ 2047 ]
IBSS channel: [ 3 ]
Current channel: [ 10 ]
Comms quality/signal/noise: [ 6 60 54 ]
Promiscuous mode: [ Off ]
Port type (1=BSS, 3=ad-hoc): [ 1 ]
MAC address: [ 00:02:2d:04:09:3a ]
TX rate (selection): [ 3 ]
TX rate (actual speed): [ 2 ]
RTS/CTS handshake threshold: [ 2347 ]
Create IBSS: [ Off ]
Access point density: [ 1 ]
Power Mgmt (1=on, 0=off): [ 0 ]
Max sleep time: [ 100 ]
WEP encryption: [ Off ]
TX encryption key: [ 1 ]
Encryption keys: [ ][ ][ ][ ]
=== grog@sydney (/dev/ttyp6) ~ 2 -> ifconfig wi0
wi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::202:2dff:fe04:93a%wi0 prefixlen 64 scopeid 0x9
inet 196.168.1.68 netmask 0xffffff00 broadcast 255.255.255.255
ether 00:02:2d:04:09:3a
They appear to have blocked tracroute:
=== grog@sydney (/dev/ttyp6) ~ 3 -> traceroute freebie.lemis.com
traceroute to freebie.lemis.com (192.109.197.137), 30 hops max, 40 byte packets
1 196.168.1.1 (196.168.1.1) 2.781 ms 6.651 ms 8.375 ms
2 *^C
but name services and ping work, and so does ssh.
Check the headers on this message; I'd be interested to see what they
say.
Greg
--
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