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Im sure everyone who has pinged someone will quite often not get an answer. I then learned that firewalls tend to block ICMPs. Does this automatically mean that when I ping a host, and I get no response, that the host has a firewall installed?(or a has a router perhaps) Furthermore, if both of these options are candidates... how do I find out if it is a firewall or a router blocking my pings? :confused:
Hello,
While I'm not sure on how to tell 'what type' of firewall is blocking you;
You are correct that it can be either a hardware firewall (router) or software firewall.
Its very common for many people and most companies to use routers with hardware firewalls that prevent any ICMP traffic as to eliminate the threat of a network being ping flooded... (Also just to remain that much more 'private')
RRP
i think you answered your own question, if your pings are being blocked, then either the IP you are trying to ping isnt active, or it has a firewall installed that is blocking all of your incoming pings. Most large sites (such as antionline.com) refuse pings.
Since there is no traffic being returned its nearly impossible to tell if it is a router or a firewall.
NMAP can tell you whether the host is firewalled or is actually down. It can perform other tasks as well, such as OS fingerprinting(if that is something that would be interesting for you to know about the host.)
-NeuTron
Thanks for clearing this up... its been confusing me for a while...not anymore, ty.
Well, if a ping doesn't get through to your target machine, while, yeah, it could be that it's firewalled, it could also simply mean that the target machine is down. To see if it's firewalled, you could try running a trace route to the target machine. If the trace route get through to the target machine and you see stars (*****) as a hop, that particualar hop is a firewall. Granted, the firewall could be declining trace routes as well, but it's worth a shot and just as easy to run as a ping.
alpha
[gloworange]When,How,and What is ping for? sorry i'm just a newbie just curious..is it neccesarry to ping?[/gloworange]
Actually, the ip just before the ***** is usually the firewall. :)Quote:
...and you see stars (*****) as a hop, that particualar hop is a firewall...
pixelrockchick, Oh man... wait til im either not so tired or I grab my sexy matrix styled sunglasses then put them on. Your sig annoys me and so does the yellow text that also hurts my eye-balls aswell.
Ok ping...
Go to DOS AKA "command promt"
ping 127.0.0.1 -w 3000
ping is the ping command, 127.0.0.1 is a example IP address, -w 3000 is a wait of 3000 milliseconds or also known as 3 seconds.
|The|Specialist sarcasticly says: Oh gezz... that as about 100 times easier than a game of pong, & once you've both pinged and played the game pong wouldn't you agree? :o You can mainly use ping to see if a box is online and stuff like that.
Umm, you would be pinging yourself if you'd use 127.0.0.1.
Yeah, but they wouldn't be using ping. It would be using something more stealthy such as syn, followed by a reset when the host initiates the 3 way handshake.Quote:
NMAP can tell you whether the host is firewalled or is actually down. It can perform other tasks as well, such as OS fingerprinting(if that is something that would be interesting for you to know about the host.) -NeuTron
why do you have to be rude to a newby like me? just asking question...
Pay no mind to the|specialst....he is tarded and doesn't play well with others.
Try this site, www.happyhacker.org
scroll down untill you see the link for mostly harmless hacking...
You will find the answer to your question.
(NOTE THAT IS NOT A REFERENCE TO USE IT TO FLOOD A isp SO AS TO CRASH THE SYSTEM OR TO BYPASS THE FIREWALL)
oR ANOTHER WAY TO BYPASS THE FIRE WALL IS TO TYPE.......
netsta -a
netstat -r
netstat -an
(JUST A FEW IDEAS, NOT TO SURE IF THEY ARE THE RIGHT COMMANDS, IM MORE AT HOME USING TELNET SO I JUST TRYING TO HELP ANYHOW......
just asking man!
NOTE THIS IS NOT IN ANWAY TO HACK .
IT'S SIMPLY SOMETHING YOU CAN DO ON YOUR OWN SYSTEM!!!
YOU CANNOT HACK INTO SOMEONES' SYSYTEM OR CRASH ANYTHING USING THESE COMMANDS
(I DO NOT PROMOTE HACKING----------------I AM SIMPLY TRYING TO HELP NEWBIES, JUST LIKE I WAS HELPED WHEN I WAS ONE.)
ShutDown The Cool way!!!
1)Open up C: prompt ( Start> run > command > cd\)and type in Shutdown -s -t xx -c "xxxxxxxx".
The "xx" after -t is for the time in seconds. for example, if you enter in 22, it will shut
down in 22 seconds. The "xxxxxxxx" after -c is for a comment to make while its shutting down.
Logoff the cool way!!!
1)Open up C: prompt ( Start> run > command > cd\)and type in "logoff".
Change the heading in DOS:
1)Go to dos ( Start> run > command > cd\) .
2)Type in title xxxx. The xxxx is where you put in the title.
Change the label on your C: drive
1)Type in label xxxx (xxxx is the name you want it).
Change the startup splash screen in Windows 98:
1)Open up DOS (of course, and make sure C:> is showing and not anything else) and type in
attrib *.sys and if logow.sys or logo.sys isnt there, type in copy logow.sys c: and if that doesn't
work, typ in copy logo.sys c:.
2)If it works, go to My Computer and go to C:. logo.sys should be there.
3)Since .sys's are read only files, open up command prompt again and (yes, C:> needs to show) type
attrib logo.sys -s -h -r.
4)Go to Paint and go to File > Open and type C: logo.sys. It should open. Edit it as you wish. Then
click "Save"
5)Open MSDOS (YES, C:> MUST SHOW!) and type attrib logo.sys +h +r +s. Thats all there is to it.
When you restart your pc, it should pop up.
Change the logoff splash screen in Windows 98:
Note: alot is just copied and modified from the last tutorial
1)Open up DOS (of course, and make sure C:\windows> is showing and not anything else) and type in
attrib *.sys and if logow.sys or logo.sys isnt there, type in copy logow.sys c:\windows and if that doesn't
work, typ in copy logo.sys c:\windows.
2)If it works, go to My Computer and go to C\windows:. logo.sys should be there.
3)Since .sys's are read only files, open up command prompt again and (yes, C:\windows> needs to show) type
attrib logow.sys -s -h -r.
4)Go to Paint and go to File > Open and type C:windows\logo.sys. It should open. Edit it as you wish. Then
click "Save AS" and save it as C:\windows\logow.sys
5)Open MSDOS (YES, C:\windows> MUST SHOW!) and type attrib logo.sys +h +r +s. Thats all there is to it.
When you restart your pc, it should pop up.
Note again: alot of the programs that we have like nmap_win can be ran in dos by typing nmap.
(WHY NOT JUST UST TELNET, IT'S MORE FUN AND CAN MAKE FOR SOME INTERESTING READIN)
NOTE THIS INFORMATION IS NOT MEANT TO PROMOTE HACKING..
I DO NOT PROMOTE HAKCING NOR DO I PRACTICE HACKING,
I AM SIMPLY TRYIN TO HELP PEOPLE WITH THERE PROBLEMS....
AND IF THEY CHOOSE TO USE MY TIPS OR INFORMATION FOR EVIL, THEN I AM NOT TO BE HELD RESPONSIBLE!!!!!!!!!!
FTP client via Telnet
Here is how to use FTP client in telnet... It is a bit harder, but it's fun when you do
it after a while.
FTP in web sites:
1)Open up telnet and type ftp.urlhere.com 21 It should ask for a user name and password.
Put them in. If all goes well, something like the following should pop up:
220-Welcome to XXXXX Web Hosting FTP server.
220-Need help? Get all details at:
220-http://XXXXXX.com
220-
220-No anonymous logins accepted.
220 XXXXX
user XXXXXX
331-Enter your Yahoo! member password
331
pass XXXXXX
230-You are using 57.8% of your subscribed disk space
230 You have 31.631 MB of space available
help
214-The following commands are recognized (* =>'s unimplemented).
USER QUIT MODE REST CWD STAT RMD XCUP
PASS PORT RETR RNFR XCWD HELP XRMD STOU
ACCT* PASV STOR RNTO LIST NOOP PWD SIZE
SMNT* TYPE APPE ABOR NLST MKD XPWD MDTM
REIN* STRU ALLO DELE SYST XMKD CDUP
214 Direct comments to XXXXXX.com
help CDUP
214 Syntax: CDUP (change to parent directory)
help ACCT
214 ACCT \t(specify account); unimplemented
help REIN
214 REIN \t(reinitialize server state); unimplemented
Everythign in bold is what I typed. Remember when you log in, type "user xxxx" not just your
user name, same for the password and everything else.
For computer (Pc must have server running, I am using the BPFTP Server that you can downlaod
at tutorials section):
If tou enter in the IP and port correctly, this should pop up:
220 BulletProof FTP Server ready ...
When you login, it will look like this:
220 BulletProof FTP Server ready ...
USER XXXXXX
331 Password required for XXXXXX.
PASS XXXXXX
530 Can't login : invalid home directory ! < Note-- Change "Home IP" to their IP in the BPFTP "Setup
USER XXXXXX User Accounts" section of th BPFTP Server
331 Password required for XXXXXX.
PASS XXXXXX
230 User XXXXXX logged in.
The < Note-- Is what I put to tell you what you should do if you get that error. That won't
pop up in the telnet window or command prompt.
Damn Telnet did you have to copy the entire ****ing site?
Yo Pixel don't worry about Special Ed he is always like that. He is pretty cool once you get past the never ending sarcasm. He is fighting for my ******* award.
ok quick write up on Ping.
Oh the hell with it, Type ping with nothing after it and it will give you the help menu.
As good if you are going to try to learn something, atleast go to altavista. you will learn more there.
Jizz