Basic things you can find from an IP

What can you find out from an IP?

Here I will outline some use full Unix and NT commands for finding out more information about a given COLOR=purpleIP. Some of these techniques will fail depending on firewall rule sets.

Items to be covered:

How do I find my own IP?
How do I find out if an IP is contactable?
How do I find out what organization owns an IP?
How do I find out what OS a box is running?
How do I find out what ports are open/services are running?
How do I tell who is logged in to that box?
Any good all in one tools?
How Do I find the NetBIOS name from the IP?
How Do I find the IP from the NetBIOS name?
How can I see the traffic going between two IPs on a switched network?

How do I find my own IP?

Because the IP your ISP's DHCP server hands you may not always be the same it is handy to be able to quickly find out what your IP is. Most of the time on a LAN the DHCP server will try to hand a machine the same IP it's MAC address received the last time it requested an address, but not always. To find out your host IP and other useful information use these commands.

Windows 9X/Me:

Use the "winipcfg" command, this will bring up a GUI dialog with all the info you will need.

Windows NT/2000/XP/etc:

Use the "ipconfig command.

Quote:

C:\>ipconfig /all

Windows 2000 IP Configuration

Host Name . . . . . . . . . . . . : se-libg-adrian1
Primary DNS Suffix . . . . . . . : ads.mydomain.edu
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : ads.mydomain.edu
mydomains.edu
mydomain.edu

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : mydomains.edu
Description . . . . . . . . . . . : 3Com 3C920 Integrated Fast Ethernet
Controller (3C905C-TX Compatible)
Physical Address. . . . . . . . . : 00-B0-D0-74-A8-A4
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.26.29
Subnet Mask . . . . . . . . . . . : 255.255.240.0
Default Gateway . . . . . . . . . : 192.168.16.100
DHCP Server . . . . . . . . . . . : 192.168.30.254
DNS Servers . . . . . . . . . . . : 192.168.20.1
192.168.25.1
192.168.30.1
129.79.1.1
129.79.5.100
Primary WINS Server . . . . . . . : 192.168.30.254
Secondary WINS Server . . . . . . : 192.168.30.253
Lease Obtained. . . . . . . . . . : Saturday, February 02, 2002 12:03:14
PM
Lease Expires . . . . . . . . . . : Sunday, February 03, 2002 12:03:14 PM

C:\>

Notice that this gives you allsorts of networking information, including your IP, Gateway, MAC Address, DNS server and Host Name.

Linux/Unix:

Use the "ifconfig" command to find the IP of the box.

Quote:

bash-2.04$ /sbin/ifconfig
eth0 Link encap:Ethernet HWaddr 00:C0:F0:31:9F:10
inet addr:192.168.30.130 Bcast:192.168.31.255 Mask:255.255.240.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:21353979 errors:2 dropped:0 overruns:0 frame:2
TX packets:20342701 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:11 Base address:0xde00

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:2234607 errors:0 dropped:0 overruns:0 frame:0
TX packets:2234607 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0

bash-2.04$

If you are SSH/telneting to the box and you want to find the IP you are attaching from use the "finger" command with no parameters.

Quote:

bash-2.04$ finger
Login Name Tty Idle Login Time Office Office Phone
adrian Adrian Crenshaw pts/3 Feb 2 14:57 (192.168.26.29)
root root pts/0 1:53 Jan 28 17:25 (tux:2)
root root pts/1 4d Jan 25 14:57
root root pts/2 8d Jan 25 14:57 (tux:2)
bash-2.04$

All OSes:

The IP found using the instructions above is the IP your computers NIC (Network Interface Card) or modem has, if you are hooked to a home router or some other kind of NAT box the IP the world sees as you when you connect to other hosts will be different. To find you WAN IP (the IP the world sees when you are behind a NAT box or a Proxy) go to one of the following sites:

http://www.rootsecure.net/?p=your_ip
http://www.ipchicken.com/
http://www.whatismyip.com/
http://checkip.dyndns.org/

How do I find out if an IP is contactable?

If the host is not blocking ICMP echo requests (type 8, code 0) try using the "ping" command, it should work from any Unix like OS and from Windows.

UP:

Quote:

C:\>ping 192.168.30.130

Pinging 192.168.30.130 with 32 bytes of data:

Reply from 192.168.30.130: bytes=32 time<10ms TTL=255
Reply from 192.168.30.130: bytes=32 time<10ms TTL=255
Reply from 192.168.30.130: bytes=32 time<10ms TTL=255
Reply from 192.168.30.130: bytes=32 time<10ms TTL=255

Ping statistics for 192.168.30.130:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\>

Not Up

Quote:

C:\>ping 192.168.30.133

Pinging 192.168.30.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 192.168.30.133:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\>

If the host is behind a firewall blocking ICMP echo requests then you will have to look into other ways of enumerating the network, like Hping ( http://www.hping.org/ )

How do I find out what organization owns an IP?

Easiest way is to use the online tools from http://samspade.org/t/ (use IP Whois) or download their Windows tools and use them on your box. Arwin offers a similar CGI at http://ws.arin.net/cgi-bin/whois.pl if Sam Spade does not work for you. There is also a host of tools built into the SamSpade utility for Windows, which you can download from http://www.samspade.org/ssw/ .

How do I find out what OS a box is running?

You can tell what OS a box is running in a few ways. Knowing what ports are open on the box will give you some good guesses (for instance port 6000 is used for X-windows, it being open probably means the box is running some kind of Unix). The easiest way to find this info is to use the "nmap" utility from http://www.insecure.org/nmap/ ( also available on the Knoppix Linux Boot CD ( http://www.knoppix.org/ ) or Trinux boot disk ( http://sourceforge.net/projects/trinux/ ) ) and do an OS fingerprint like so:

Quote:

[root@tux adrian]# nmap -O tux.mydomains.edu

Starting nmap V. 2.54BETA26 ( www.insecure.org/nmap/ )
Adding open port 22/tcp
Adding open port 1024/tcp
Adding open port 25/tcp
Adding open port 80/tcp
Adding open port 110/tcp
Adding open port 993/tcp
Adding open port 6002/tcp
Adding open port 5902/tcp
Adding open port 111/tcp
Adding open port 443/tcp
Adding open port 21/tcp
Adding open port 995/tcp
Adding open port 23/tcp
Adding open port 143/tcp
Adding open port 139/tcp
Adding open port 515/tcp
Interesting ports on tux.mydomains.edu (192.168.30.130):
(The 1532 ports scanned but not shown below are in state: closed)
Port State Service
21/tcp open ftp
22/tcp open ssh
23/tcp open telnet
25/tcp open smtp
80/tcp open http
110/tcp open pop-3
111/tcp open sunrpc
139/tcp open netbios-ssn
143/tcp open imap2
443/tcp open https
515/tcp open printer
993/tcp open imaps
995/tcp open pop3s
1024/tcp open kdm
5902/tcp open vnc-2
6002/tcp open X11:2

Remote operating system guess: Linux Kernel 2.4.0 - 2.4.5 (X86)
Uptime 9.033 days (since Fri Jan 25 14:55:20 2002)

Nmap run completed -- 1 IP address (1 host up) scanned in 2 seconds
[root@tux adrian]#

Notice the part in red indicate the likely OS. Be careful about using tools like "nmap", the site you are targeting may give your local admin a call asking why you are scanning their site. Also make sure your copy of Nmap is up to date so it has the newest OS fingerprints, the version I used in the above example is kind of old.

You can also find out sometimes by using the "What's that site running" cgi at Netcraft, which does a banner grab for you.

Telneting to the host and observing the intro may give you some info:

Quote:

Red Hat Linux release 7.1 (Seawolf)
Kernel 2.4.2-2 on an i686
login:

and if they only have port 80 open you can telnet to that port and hit enter twice and observe the headers:

Quote:

[root@tux adrian]# telnet orangutan.mydomains.edu 80
Trying 192.168.28.32...
Connected to orangutan.mydomains.edu.
Escape character is '^]'.

HTTP/1.1 400 Bad Request
Server: Microsoft-IIS/5.0
Date: Sun, 03 Feb 2002 20:51:47 GMT
Content-Type: text/html
Content-Length: 87

<html><head><title>Error</title></head><body>The parameter is incorrect. </body>
</html>Connection closed by foreign host.
[root@tux adrian]#

This technique is know as "banner grabbing".

How do I find out what ports are open/services are running?

There are port scanners for Windows and Unix, "nmap" ( http://www.insecure.org/nmap/ and available on the Trinux boot disk) being my personal choice. Be careful about using tools like "nmap", the site you are targeting may give your local admin a call asking why you are scanning their site. See the above entry for an example of using nmap.

If you want to find out what ports are open on your local Windows box use the "netstat" command.

Windows:

Quote:

C:\>netstat

Active Connections

Proto Local Address Foreign Address State
TCP se-sscs-cv112b7:1370 se-cser-fs01.mydomains.edu:netbios-ssn ESTABLISHED
TCP se-sscs-cv112b7:1469 ntemail1-tr.mydomains.state.edu:1078 ESTABLISHED
TCP se-sscs-cv112b7:1473 ntemail1-tr.mydomains.state.edu:1091 ESTABLISHED
TCP se-sscs-cv112b7:1495 ntemail1-tr.mydomains.state.edu:1078 ESTABLISHED
TCP se-sscs-cv112b7:1499 ntemail1-tr.mydomains.state.edu:1091 ESTABLISHED
TCP se-sscs-cv112b7:1631 tux.mydomains.edu:telnet ESTABLISHED
TCP se-sscs-cv112b7:1690 bl-uits-adsdc01.ads.mydomain.edu:microsoft-ds TIME_WA
IT
TCP se-sscs-cv112b7:1692 se-cser-app1.mydomains.edu:microsoft-ds ESTABLISHED
TCP se-sscs-cv112b7:1694 bl-uits-adsdc01.ads.mydomain.edu:microsoft-ds TIME_WA
IT
TCP se-sscs-cv112b7:1699 homepages1.mydomains.edu:netbios-ssn TIME_WAIT

C:\>

For better information, like what binary has a post open use a tool like Fport ( http://www.foundstone.com ):

Quote:

C:\>fport
FPort v2.0 - TCP/IP Process to Port Mapper
Copyright 2000 by Foundstone, Inc.
http://www.foundstone.com

Pid Process Port Proto Path
1572 inetinfo -> 25 TCP C:\WINDOWS\System32\inetsrv\inetinfo.exe
1572 inetinfo -> 80 TCP C:\WINDOWS\System32\inetsrv\inetinfo.exe
1008 svchost -> 135 TCP C:\WINDOWS\system32\svchost.exe
4 System -> 139 TCP
1572 inetinfo -> 443 TCP C:\WINDOWS\System32\inetsrv\inetinfo.exe
4 System -> 445 TCP
1108 svchost -> 1025 TCP C:\WINDOWS\System32\svchost.exe
1572 inetinfo -> 1043 TCP C:\WINDOWS\System32\inetsrv\inetinfo.exe
776 winlogon -> 1056 TCP \??\C:\WINDOWS\system32\winlogon.exe
4 System -> 1135 TCP
2436 OUTLOOK -> 1162 TCP C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
4 System -> 1169 TCP
2436 OUTLOOK -> 1176 TCP C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
1232 firefox -> 1219 TCP C:\Program Files\Mozilla Firefox\firefox.exe
1232 firefox -> 1220 TCP C:\Program Files\Mozilla Firefox\firefox.exe
2436 OUTLOOK -> 1221 TCP C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
4 System -> 1390 TCP
4 System -> 1451 TCP
4 System -> 1456 TCP
1232 firefox -> 1602 TCP C:\Program Files\Mozilla Firefox\firefox.exe
4 System -> 1634 TCP
0 System -> 1635 TCP
1108 svchost -> 3389 TCP C:\WINDOWS\System32\svchost.exe
1296 -> 5000 TCP
264 WCESCOMM -> 5679 TCP C:\Program Files\Microsoft ActiveSync\WCESCOMM.EXE

1572 inetinfo -> 135 UDP C:\WINDOWS\System32\inetsrv\inetinfo.exe
2436 OUTLOOK -> 137 UDP C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
4 System -> 138 UDP
1572 inetinfo -> 445 UDP C:\WINDOWS\System32\inetsrv\inetinfo.exe
1008 svchost -> 500 UDP C:\WINDOWS\system32\svchost.exe
1572 inetinfo -> 1026 UDP C:\WINDOWS\System32\inetsrv\inetinfo.exe
4 System -> 1027 UDP
1108 svchost -> 1028 UDP C:\WINDOWS\System32\svchost.exe
1572 inetinfo -> 1049 UDP C:\WINDOWS\System32\inetsrv\inetinfo.exe
776 winlogon -> 1051 UDP \??\C:\WINDOWS\system32\winlogon.exe
4 System -> 1165 UDP
2436 OUTLOOK -> 1558 UDP C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
4 System -> 1900 UDP
1232 firefox -> 1900 UDP C:\Program Files\Mozilla Firefox\firefox.exe
2436 OUTLOOK -> 2967 UDP C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
4 System -> 3456 UDP

C:\>

Or Netport:

Quote:

C:\>netport
NetPort v1.1 - A Visual Log Product
Copyright 2004 by Softgears Company
http://www.softgears.com

Pid Process Port Proto Foreign Address Path
1572 inetinfo 25 TCP: LISTENING C:\WINDOWS\System32\inetsrv\inetinfo.exe
1572 inetinfo 80 TCP: LISTENING C:\WINDOWS\System32\inetsrv\inetinfo.exe
1008 svchost 135 TCP: LISTENING C:\WINDOWS\system32\svchost.exe
1572 inetinfo 443 TCP: LISTENING C:\WINDOWS\System32\inetsrv\inetinfo.exe
4 System 445 TCP: LISTENING
1108 svchost 1025 TCP: LISTENING C:\WINDOWS\System32\svchost.exe
1572 inetinfo 1043 TCP: LISTENING C:\WINDOWS\System32\inetsrv\inetinfo.exe
776 winlogon 1056 TCP: LISTENING \??\C:\WINDOWS\system32\winlogon.exe
4 System 1135 TCP: LISTENING
2436 OUTLOOK 1162 TCP: LISTENING C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
4 System 1169 TCP: LISTENING
2436 OUTLOOK 1176 TCP: LISTENING C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
1232 firefox 1220 TCP: LISTENING C:\Program Files\Mozilla Firefox\firefox.exe
2436 OUTLOOK 1221 TCP: LISTENING C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
4 System 1451 TCP: LISTENING
4 System 1456 TCP: LISTENING
1232 firefox 1602 TCP: LISTENING C:\Program Files\Mozilla Firefox\firefox.exe
1108 svchost 3389 TCP: LISTENING C:\WINDOWS\System32\svchost.exe
1296 System 5000 TCP: LISTENING
264 WCESCOMM 5679 TCP: LISTENING C:\Program Files\Microsoft ActiveSync\WCESCOMM.EXE
1232 firefox 1219 TCP: LISTENING C:\Program Files\Mozilla Firefox\firefox.exe
1232 firefox 1219 TCP: ESTABLISHED 127.0.0.1:1220 C:\Program Files\Mozilla Firefox\firefox.exe
1232 firefox 1220 TCP: ESTABLISHED 127.0.0.1:1219 C:\Program Files\Mozilla Firefox\firefox.exe
4 System 139 TCP: LISTENING
776 winlogon 1056 TCP: CLOSE_WAIT 134.68.220.157:389 \??\C:\WINDOWS\system32\winlogon.exe
2436 OUTLOOK 1162 TCP: ESTABLISHED 134.68.220.155:1025 C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
4 System 1169 TCP: ESTABLISHED 192.168.28.33:445
2436 OUTLOOK 1176 TCP: ESTABLISHED 129.79.1.40:1222 C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
2436 OUTLOOK 1221 TCP: ESTABLISHED 129.79.1.214:1249 C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
4 System 1390 TCP: LISTENING
4 System 1390 TCP: ESTABLISHED 192.168.30.154:139
4 System 1456 TCP: ESTABLISHED 129.79.6.3:445
1232 firefox 1602 TCP: ESTABLISHED 64.233.167.104:80 C:\Program Files\Mozilla Firefox\firefox.exe
4 System 1634 TCP: LISTENING
4 System 1634 TCP: ESTABLISHED 192.168.30.34:139
1008 svchost 135 UDP: LISTENING C:\WINDOWS\system32\svchost.exe
4 System 445 UDP: LISTENING
836 lsass 500 UDP: LISTENING C:\WINDOWS\system32\lsass.exe
1264 System 1026 UDP: LISTENING
1264 System 1027 UDP: LISTENING
836 lsass 1028 UDP: LISTENING C:\WINDOWS\system32\lsass.exe
1572 inetinfo 1049 UDP: LISTENING C:\WINDOWS\System32\inetsrv\inetinfo.exe
776 winlogon 1051 UDP: LISTENING \??\C:\WINDOWS\system32\winlogon.exe
2436 OUTLOOK 1165 UDP: LISTENING C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE
1640 Rtvscan 2967 UDP: LISTENING C:\Program Files\Symantec_Client_Security\Symantec AntiVirus\Rtvscan.exe
1572 inetinfo 3456 UDP: LISTENING C:\WINDOWS\System32\inetsrv\inetinfo.exe
4064 FRONTPG 1558 UDP: LISTENING C:\PROGRA~1\MICROS~2\Office10\FRONTPG.EXE
1296 System 1900 UDP: LISTENING
4 System 137 UDP: LISTENING
4 System 138 UDP: LISTENING
1296 System 1900 UDP: LISTENING

C:\>

Linux/*nix:

Use the "lsof -i" command:

Quote:

[root@balrog root]# lsof -i
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
dhclient 467 root 4u IPv4 777 UDP *:bootpc
portmap 533 rpc 3u IPv4 898 UDP *:sunrpc
portmap 533 rpc 4u IPv4 901 TCP *:sunrpc (LISTEN)
rpc.statd 552 rpcuser 4u IPv4 972 UDP *:32768
rpc.statd 552 rpcuser 5u IPv4 939 UDP *:728
rpc.statd 552 rpcuser 6u IPv4 975 TCP *:32768 (LISTEN)
sshd 642 root 3u IPv4 1287 TCP *:ssh (LISTEN)
xinetd 657 root 5u IPv4 1313 TCP localhost.localdomain:32769 (LISTEN)
sendmail 682 root 4u IPv4 1377 TCP localhost.localdomain:smtp (LISTEN)
httpd 712 root 3u IPv4 1422 TCP *:http (LISTEN)
httpd 712 root 4u IPv4 1423 TCP *:https (LISTEN)
sshd 8498 root 4u IPv4 323188 TCP balrog.ius.edu:ssh->winxpe:1644 (ESTABLISHED)
httpd 31094 apache 3u IPv4 1422 TCP *:http (LISTEN)
httpd 31094 apache 4u IPv4 1423 TCP *:https (LISTEN)
httpd 31095 apache 3u IPv4 1422 TCP *:http (LISTEN)
httpd 31095 apache 4u IPv4 1423 TCP *:https (LISTEN)
httpd 31096 apache 3u IPv4 1422 TCP *:http (LISTEN)
httpd 31096 apache 4u IPv4 1423 TCP *:https (LISTEN)
httpd 31097 apache 3u IPv4 1422 TCP *:http (LISTEN)
httpd 31097 apache 4u IPv4 1423 TCP *:https (LISTEN)
httpd 31098 apache 3u IPv4 1422 TCP *:http (LISTEN)
httpd 31098 apache 4u IPv4 1423 TCP *:https (LISTEN)
httpd 31099 apache 3u IPv4 1422 TCP *:http (LISTEN)
httpd 31099 apache 4u IPv4 1423 TCP *:https (LISTEN)
httpd 31100 apache 3u IPv4 1422 TCP *:http (LISTEN)
httpd 31100 apache 4u IPv4 1423 TCP *:https (LISTEN)
httpd 31101 apache 3u IPv4 1422 TCP *:http (LISTEN)
httpd 31101 apache 4u IPv4 1423 TCP *:https (LISTEN)
[root@balrog root]#

How do I tell who is logged into a remote Windows box?

On Windows you can try:

Quote:

C:\>nbtstat -a somebox
Local Area Connection:

Node IpAddress: [192.168.22.68] Scope Id: []
NetBIOS Remote Machine Name Table
Name Type Status
---------------------------------------------
SE-SSCS-CV112C5<00> UNIQUE Registered
ADS <00> GROUP Registered
SE-SSCS-CV112C5<03> UNIQUE Registered
ADS <1E> GROUP Registered
JDOE <03> UNIQUE Registered

MAC Address = 00-04-76-39-A9-F9
C:\>

But if Netbios over TCP/IP it turned off it won't work.
In that case you may have to use a WMI script, but you would have to be an Admin on the remote box.

On Unix:

Quote:

bash-2.05# nmblookup -S somebox
querying se-sscs-cv112c5 on 192.168.31.255
192.168.22.59 somebox <00>
Looking up status of 192.168.22.59
SE-SSCS-CV112C5 <00> - M <ACTIVE>
ADS <00> - <GROUP> M <ACTIVE>
SE-SSCS-CV112C5 <03> - M <ACTIVE>
ADS <1e> - <GROUP> M <ACTIVE>
JDOE <03> - M <ACTIVE>

bash-2.05#

The above will only work if the Windows box has Netbios over TCP/IP it turned on.

Any good all in one tools?

LANguard (for Windows) and Nessus (for Unix). With all these you would want to turn off some of the options, otherwise the admins at the other site will see is as an all out attack.

How Do I find the NetBIOS name from the IP?

On Windows:

Quote:

C:\>nbtstat -a 192.168.22.68

Local Area Connection:
Node IpAddress: [192.168.22.68] Scope Id: []

NetBIOS Remote Machine Name Table

Name Type Status
---------------------------------------------
SE-SSCS-CV112C8<00> UNIQUE Registered
ADS <00> GROUP Registered
SE-SSCS-CV112C8<03> UNIQUE Registered
SE-SSCS-CV112C8<20> UNIQUE Registered
ADS <1E> GROUP Registered
ADRIAN <03> UNIQUE Registered

MAC Address = 00-04-76-39-B6-D9

C:\>

On Unix (if you have nbtstat installed):

Quote:

[root@tux /root]# nbtstat 192.168.22.68
received data:
A2 48 84 00 00 00 00 01 00 00 00 00 20 43 4B 41 .H.......... CKA
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA
41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 AAAAAAAAAAAAA..!
00 01 00 00 00 00 00 9B 06 53 45 2D 53 53 43 53 .........SE-SSCS
2D 43 56 31 31 32 43 38 00 44 00 41 44 53 20 20 -CV112C8.D.ADS
20 20 20 20 20 20 20 20 20 20 00 C4 00 53 45 2D ...SE-
53 53 43 53 2D 43 56 31 31 32 43 38 03 44 00 53 SSCS-CV112C8.D.S
45 2D 53 53 43 53 2D 43 56 31 31 32 43 38 20 44 E-SSCS-CV112C8 D
00 41 44 53 20 20 20 20 20 20 20 20 20 20 20 20 .ADS
1E C4 00 41 44 52 49 41 4E 20 20 20 20 20 20 20 ...ADRIAN
20 20 03 44 00 00 04 76 39 B6 D9 00 00 00 00 00 .D...v9.......
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 8C .....
6 names in response
SE-SSCS-CV112C8<0x00> Unique Workstation Service
ADS <0x00> Group Domain Name
SE-SSCS-CV112C8<0x03> Unique Messenger Service
SE-SSCS-CV112C8<0x20> Unique File Server Service
ADS <0x1e> Group Potential Master Browser
ADRIAN <0x03> Unique Messenger Service
[root@tux /root]#

How Do I find the IP from the NetBIOS name?

On Windows:

Quote:

C:\>nbtstat -a se-sscs-cv112c8

Local Area Connection:
Node IpAddress: [192.168.22.68] Scope Id: []

NetBIOS Remote Machine Name Table

Name Type Status
---------------------------------------------
SE-SSCS-CV112C8<00> UNIQUE Registered
ADS <00> GROUP Registered
SE-SSCS-CV112C8<03> UNIQUE Registered
SE-SSCS-CV112C8<20> UNIQUE Registered
ADS <1E> GROUP Registered
ADRIAN <03> UNIQUE Registered

MAC Address = 00-04-76-39-B6-D9
C:\>

On Unix:

Quote:

[root@tux /root]# nmblookup se-sscs-cv112c8
querying se-sscs-cv112c8 on 192.168.31.255
192.168.22.68 se-sscs-cv112c8<00>
[root@tux /root]#

How can I see the traffic going between two points on a switched network?

Get the dsniff and ngrep packages, they come with Trinux (note: on Trinux use "arpredirect" instead of "arpspoof") or you can download them. Start up three terminals.

In the first terminal run :

Quote:

arpspoof -t 1.1.1.1 2.2.2.2

In the 2nd one run :

Quote:

arpspoof -t 2.2.2.2 1.1.1.1

Then run ngrep:

Quote:

ngrep host 1.1.1.1|more

and watch the fun. Also try the "dsniff" command to see plaintext passwords that are passed between the two hosts. To find out more information visit my article on the basics of ARP spoofing at http://irongeek.com/i.php?page=security/arpspoof

Re: Basic things you can find from an IP

Quote:

Originally posted here by Irongeek
What can you find out from an IP?

Here I will outline some use full Unix and NT commands for finding out more information about a given COLOR=purpleIP. Some of these techniques will fail depending on firewall rule sets.

Items to be covered:

How do I find my own IP?
How do I find out if an IP is contactable?
How do I find out what organization owns an IP?
How do I find out what OS a box is running?
How do I find out what ports are open/services are running?
How do I tell who is logged in to that box?
Any good all in one tools?
[/url]

A good *remote* all in one tool I like to use is

http://www.dnsstuff.com

Is a nice compliment to local tools.

Basic things you can find from a Tutorial

Quote:

Host Name . . . . . . . . . . . . : se-libg-adrian1

Ahhh.... So, your name is Adrian.... Ok....

Quote:

adrian Adrian Crenshaw pts/3 Feb 2 14:57 (192.168.26.29)

Ahhh.... Adrian Crenshaw.... Ok.....

Quote:

Remote operating system guess: Linux Kernel 2.4.0 - 2.4.5 (X86)

Adrian is running Linux.... but let's be careful.... NMap can often mistake a Win2k box for a Linux Kernel 2.4.0 - 2.4.5 IIRC.....

Quote:

[root@tux adrian]# telnet orangutan.mydomains.edu 80
Trying 192.168.28.32...
Connected to orangutan.mydomains.edu.
Escape character is '^]'.

HTTP/1.1 400 Bad Request
Server: Microsoft-IIS/5.0
Date: Sun, 03 Feb 2002 20:51:47 GMT
Content-Type: text/html
Content-Length: 87

Adrian scans someone elses box or a different box he owns..... Hmmmm.....

I'm not going to go on..... Your profile states you are in Louisville, (nice town BTW, been there a few times..... ;)), and your tutorial almost leads me to your doorstep.....

Sanitize, Sanitize, Sanitize......

Dude, my name is already all over my website and articles I’ve written else where. Most of this data you can find about my boxes in this tutorial is very old (check the Nmap version number). I did do a little to Sanitize this data some before I put up the tutorial, but a lot of the info it gives about me is stuff you could find by just doing a google search. When it comes to the net I’m not a very private person.

Iron...

It might make little difference to you today.... You're the "Iron Geek"..... In a few years you will have an issue with your own privacy... trust me.... and everything you "give away" today will come back to haunt you then, because it will all still be there for the world to see..... I'm ex-special forces, (in the US...... the Brits don't put the word "special" on anything but the fewest men), and I can find you and certainly could drop you at 600 yards and you'd never see it coming.... But I'd survive about 3 seconds in a scrap with you I'm sure...... I'm a tad older now and a lot less fit and strong... :mad:

My post wasn't a condemnation of you per se, it was a lesson to others that may not be so laissez-faire and "invincible" as you are today that sanitization of what they post on the internet today will either "get" them today or it will "get" them tomorrow... Tutorials are there to teach.... Their responses can teach also.... I hope my response taught something to someone who hadn't thought about the consequences today or tomorrow.....

Thanks Tiger, I appreciate your concern. I did make some effort to obscure my IPs and the domain I’m coming from (though a little looking on the net will find such info). It has nothing to do with feeling "invincible" or macho now, I just find it unlikely that anyone would be interested enough to bother me physically. There are far more interesting folks to shoot at out there. Worse case likely scenario I see is some one messes with one of my boxes just to say he hacked to the guy on Antionline named Irongeek. I’m not that well know so I don’t think many people would find that bragable. This might be a good topic for another thread, I think I’ll start on. Thanks for giving me something to think about.

You definately know how to write your tuts Iron, this is all great stuff. One suggestion: How about bolding those questions throughout the tut? They serve as good headers, and for someone like me who's scanning through the whole thing for certain info, that would help speed things up and enhance the organized look of the tut.

Great work, keep 'em coming!

Iron:

You'd be surprised how information you give away today can come back to "haunt" you tomorrow... I haven't done it yet, though I know where I have made my "mistakes" that could lead you to my door..... But I know more than one person who has had it lead back.... including an identity theft, (ok, they weren't "smart"), but it happened.....

Maybe, your tutorial will teach others about something it wasn't intended to.... either way, it was a good tutorial...... ;)

Quote:

Originally posted here by AngelicKnight
You definately know how to write your tuts Iron, this is all great stuff. One suggestion: How about bolding those questions throughout the tut? They serve as good headers, and for someone like me who's scanning through the whole thing for certain info, that would help speed things up and enhance the organized look of the tut.

Great work, keep 'em coming!

Good idea, done.

Lots of good info in this thread. Now how can you tell if the ip in question is a buisness class proxy.
just courious.

Re: Re: Basic things you can find from an IP

hey ss2cheif,the link you gave

Quote:

[i]
http://www.dnsstuff.com

Is a nice compliment to local tools. [/B]

it sure is thanx dude.

hey iron you told me many ways to find the name of an os a box is running using linux and other os ,is there any way you can do that in a win o$ with out installing a program ( my admin does not allow downloads, so i cant download anything) BTW a very good tut
also one more question

Quote:

Lease Obtained. . . . . . . . . . : Saturday, February 02, 2002 12:03:14

what does this mean??
thanx
lol

It Means...

Quote:

Originally posted by yourdeadin

Quote:

Lease Obtained. . . . . . . . . . : Saturday, February 02, 2002 12:03:14

what does this mean??

The time that the IP was leased to the client from the DHCP.

yourdeadin, you may be able to install the windows version of nmap on one of your boxes, then just copy the directory to a disk and run it from there at work. An even better way is just boot from a Knoppix boot cd at work.

Hi Irongeek,

Thanks for the great post. Nice to see Windows and *nix examples in the same tutorial.

Cheers!

Hey Iron this was a real great tut .. i learnt many things..

keep it up :)

In

Thank Irongeek! Very Good.
I'm From Hai Duong in Viet Nam.

it was simply great work man

Hello thanhlangso and daigunder and welcome to AO

Please be kind enough and take few minutes to take a look at AO FAQ

http://www.antionline.com/faq/faq.php

Cheers

how can I do a reverse ip check to a domain or box in order to know what websites is hosted on that box ?

I need a linux COMMAND not using a website

A few things...

1. IIRC, I used ipconfig on an ME machine a few weeks ago.

2. Good tutorial.

3. Privacy is overrated, and misunderstood. Anybody in here should be able to have my full name, home address, and phone number, with a single WHOIS lookup.

4. ReMSIS... You're an idiot. Start your own damn thread.

ReMSiS,

You are supposedly 28 years old? grow up! the thread you posted to is three years old?

;)

Quote:

Originally Posted by nihil

ReMSiS,

You are supposedly 28 years old? grow up! the thread you posted to is three years old?

;)

Man I am 3 or 28 this is not ur business, if u have a solution put it here, or just leave the answer to some1 who really has 1...

There is no relation between age and knowledge

By the way, I am now 57 years old, I hope u get it now :)

57 and you type like a 13 year old. We notice the difference.

There is a relation between age and knowledge. Laziness is the source and the key between the two.

If we aren't judged in our image nor our knowledge, what do we base it on? Names? We all have a fair chance to prove ourself in knowledge, experience, kindness, respectfulness, and so on.

I'm sure a 57 year old, can notice that they have done something wrong. Question to ask yourself: Have I read the FAQ? Why is someone that has been here for five years yelling at me? I might be doing something wrong, let me check. A person at the age of 20 figures out how to analyze.

Quote:

Originally Posted by d00dz Attackin

57 and you type like a 13 year old. We notice the difference.

There is a relation between age and knowledge. Laziness is the source and the key between the two.

If we aren't judged in our imagine nor our knowledge, what do we base it on? Names? We all have a fair chance to prove ourself in knowledge, experience, kindness, respectfulness, and so on.

I'm sure a 57 year old, can notice that they have done something wrong. Question to ask yourself: Have I read the FAQ? Why is someone that has been here for five years yelling at me? I might be doing something wrong, let me check. A person at the age of 20 figures out how to analyze.

As I thought, all trying to be the Good Guy, and I am the bad 1.
The 1 who does not read the rul3z. Man I swaer no 1 knows the answer :) thats just way u keep going round the circle, no answer what to do ? try to prove I am a professor.

Is there anybody here who knows the sol. ?

I refuse to kill this thread, drop it. Grow up, end of story.

P.S: You won't get a solution from us.

Quote:

Originally Posted by d00dz Attackin

I refuse to kill this thread, drop it. Grow up, end of story.

P.S: You won't get a solution from us.

:) yes its KISS -> u do not have 1
Kill the thread or not, do u think I care ?
really I am sad for u and ur mind :)

Ok sweet thread, after I do my homework I'll get back to the tut. You're the man Iron.

Back to the matter at hand, we should not bicker gentlemen.

Quote:

Originally Posted by Irongeek

yourdeadin, you may be able to install the windows version of nmap on one of your boxes, then just copy the directory to a disk and run it from there at work. An even better way is just boot from a Knoppix boot cd at work.

Great tutorial Iron. I have passed the link to this to all of the folks in my office.

Be careful with using these tools at work. The admins restrict D/L for a reason. Mucking with this stuff without permission could be reason for dismissal.

I think I've had enough of this dip ****. Saying you're 58 yet talking like you're 11 and flat out being a pain in my ass. Tschuess arseloch!

EDIT:

Don't worry bashed his other account too.

Quote:

Originally Posted by gore

I think I've had enough of this dip ****. Saying you're 58 yet talking like you're 11 and flat out being a pain in my ass. Tschuess arseloch!

EDIT:

Don't worry bashed his other account too.

YAY.

3 cheers for teh gore.