Suggestions on a Tutorial Draft

As per MsMittens suggestion here: http://www.antionline.com/showthread...hreadid=260815 I’m posting this draft of an upcoming tutorial here. Since the subject is so broad (Answers to common question about what you can find out with just an IP address) I know there will be a lot of comments/suggestions and there is a limited amount of time in which you can edit a tutorial. I’m trying to cover many basic questions that are asked all the time in forums but only take about a paragraph to explain. Suggestions are greatly appreciated. :

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 IP. Some of these techniques will fail depending on firewall rule sets.

Topics:
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 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.

Code:

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.

Code:

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.

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:

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:

Code:

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

Code:

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:

Code:

[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:

Code:

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:

Code:

[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:

Code:

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 ):

Code:

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:

Code:

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:

Code:

[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:

Code:

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:

Code:

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 is 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:

Code:

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):

Code:

[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:

Code:

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:

Code:

[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]#

More to come

Sugestions:

change "How do I find my own IP?" by " How do I find my own Internet IP"

"Time out" doesnt mean that target host is down. It just means that you cant have contact to it. I understood the idea but could pass the wrong idea. Ive seen most guys doing troubleshooting thinking "target out of service" instead "link is down"..

Other idea is break tutorial in several parts. Maybe its long as it is now. How about to group ideas and split on more tuts?

Quote:

" How do I find my own Internet IP"

Umm.. IP means Internet Protocol. Perhaps it would be better to word it as How do I find my own IP Address

MsM,You got me. I should explain more.

He is talking about ISP assigned IP. Most of the ppl say that as "Internet address (or IP)".

Just to clarify that he isnt talking about in a generic way. Its a specific address,the public one

(public perhaps?)

It's an IP Address regardless of whether it comes from the ISP or comes from the Internal LAN. The distinction should be made on the difference between public addressing scheme and private addressing scheme. Irongeek, before going into IP Subnetting and the different between public and private (reserved) addressing, check to see if there are existing tutorials that you could reference instead. (avoids re-inventing the wheel as it were. :D)

Picky I know, but these just caught my eye.

Quote:

Notice the part in red indicate the likely OS

You didn't add the color codes.

Quote:

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.

If you are going to reference the options available than you should give an example of the safest configuration. Or at least list the most dangerous options.

Also there were several small typos in the text. Other than those I found it to be a well written informative tut.

I forgot to adapt the HTML colors from my draft to VBBoard code. Feel free to mention any typos, I know there are plenty. I'll try to be more specific about IP addresses for WAN/LAN/Private/ETC.

For typo and spelling and/or grammer errors, I am probably the worst person in the world to ask.

I would contact meeeee via pm and ask her to proof read it for you. She proof read my web site for me and corrected me on several mistakes that by myself, I would never have caught.