asus 6030vi adsl/wlan router

[John R. McPherson]

Greetings,

I recently purchased an asus 6030vi adsl/4port LAN/wlan router, which
upon inspection runs GPL'd software (including iptables) , yet the
router came with no mention of this in the documentation, nor source
code, nor an offer of source code. Asus's website doesn't mention or
offer anything either, although I noticed they have the firmware for
their WL-500g available.

I can't even find this particular model on their website, although
http://www.asus.com.tw/products1.aspx?l1=13 lists their similar models
which I presume have similar firmware. (It looks very similar to the
AAM6020VI listed on that page).

I no longer have the router, although I still have remote access to
it. I've attached a log of a telnet session.

Hope this helps
John McPherson

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$ telnet 10.21.2.1
Trying 10.21.2.1...
Connected to 10.21.2.1.
Escape character is '^]'.
BCM96345 ADSL Router
Login: admin
Password: 
> iptables -L -n
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     2    --  0.0.0.0/0            0.0.0.0/0          
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:0x16/0x02 LOG flags 0 level 1 prefix `Intrusion -> ' 
DROP       all  --  0.0.0.0/0            0.0.0.0/0          

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
TCPMSS     tcp  --  0.0.0.0/0            0.0.0.0/0          tcp flags:0x06/0x02 TCPMSS clamp to PMTU 

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
> iptables --help
iptables v1.2.7a

Usage: iptables -[AD] chain rule-specification [options]
       iptables -[RI] chain rulenum rule-specification [options]
       iptables -D chain rulenum [options]
       iptables -[LFZ] [chain] [options]
       iptables -[NX] chain
       iptables -E old-chain-name new-chain-name
       iptables -P chain target [options]
       iptables -h (print this help information)

Commands:
Either long or short options are allowed.
  --append  -A chain            Append to chain
  --delete  -D chain            Delete matching rule from chain
[... snipped ...]

> sh

BusyBox v0.60.4 () Built-in shell (msh)
Enter 'help' for a list of built-in commands.

#  cd /proc
# echo *
1 13 184 197 198 199 2 203 3 315 4 43 5 6 640 656 67 7 821 830 831 bus cmdline cpuinfo devices dma driver execdomains filesystems fs interrupts iomem ioports irq kcore kmsg ksyms loadavg locks meminfo misc modules mounts mtd net partitions pptp self slabinfo stat swaps sys sysvipc tty uptime var version
# cat cmdline
root=/dev/mtdblock0 ro
# cat version
Linux version  (@) () 
# cat kmsg
[... snipped ...]
<1>Intrusion -> IN=ppp41 OUT= MAC= SRC=210.185.9.100 DST=210.185.13.159 LEN=48 TOS=0x00 PREC=0x00 TTL=124 ID=48782 DF PROTO=TCP SPT=3466 DPT=139 WINDOW=8760 RES=0x00 SYN URGP=0 
<1>Intrusion -> IN=ppp41 OUT= MAC= SRC=210.185.8.43 DST=210.185.13.159 LEN=48 TOS=0x00 PREC=0x00 TTL=124 ID=42858 DF PROTO=TCP SPT=4225 DPT=135 WINDOW=8760 RES=0x00 SYN URGP=0 
[... snipped ...]
# cd /bin
# echo *
[ adsl adslctl atm atmctl brctl busybox cat cfm df dhcpc dhcpd dnsprobe dumpmem ebtables echo expr false fdefault igmp iptables kill ledctrl login mkdir mount msh nas netctl ping pppd ps pvc2684ctl pvc2684d pwd restart ripd rm sendarp setmem sh sysinfo test true tty udhcpd upnp wlctl zebra
# exit
> swversion show
2-12-02-0610.a0_23a
> exit