Simplest port scanner

for p in {1..1023}; do(echo >/dev/tcp/localhost/$p) >/dev/null 2>&1 && echo "$p open"; done

Very handy way to perform a host scan if you don't have nmap,ncat,nc ...or other tools installed locally. When executing a command on a /dev/tcp/$host/$port pseudo-device file, Bash opens a TCP connection to the associated socket and UDP connection when using /dev/udp/$host/$port.A simlpe way to get servers banner is to run this command "cat < /dev/tcp/localhost/25" , here you will get mail server's banner. NOTE: Bash, as packaged for Debian, does not support using the /dev/tcp and /dev/udp pseudo-device it's not enabled by default Because bash in Debian is compiled with ?disable-net-redirections.

Sample Output

22 open
25 open
53 open
80 open
110 open
111 open
143 open

By: benyounes

2010-04-26 18:09:22

echo scanner socket

Submit An Alternative

What Others Think

Stolen but cool. #10: Bash Socket Programming http://www.cyberciti.biz/tips/spice-up-your-unix-linux-shell-scripts.html

meathive · 730 weeks and 1 day ago

Radiology is the medical specialty that uses medical imaging to diagnose and treat diseases within the bodies of both humans and animals. MaxRemind top rank medical billing company USA offers radiology billing services and medical credentialing services to Radiology physicians in all states of USA at lowest rates.

stevematt · 169 weeks and 2 days ago

SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO SEO

seofox · 128 weeks and 6 days ago

seofox · 116 weeks and 4 days ago

seofox · 115 weeks and 2 days ago

We carry a wide variety of radiator parts, so chances are we have what you need right in our truck. If not, we can usually get it quickly. - Glass Repair

arlensurreali · 94 weeks and 4 days ago

rahimhh21 · 86 weeks and 1 day ago

tewakdeui · 78 weeks ago

Perfecthomepugs · 77 weeks and 3 days ago

I read that Post and got it fine and informative. Please share more like that... financial freedom

seomind · 76 weeks and 3 days ago

It should be noted that whilst ordering papers for sale at paper writing service, you can get unkind attitude. In case you feel that the bureau is trying to cheat you, don't buy term paper from it. financial freedom

seomind · 76 weeks and 3 days ago

Going to graduate school was a positive decision for me. I enjoyed the coursework, the presentations, the fellow students, and the professors. And since my company reimbursed 100% of the tuition, the only cost that I had to pay on my own was for books and supplies. Otherwise, I received a free master’s degree. All that I had to invest was my time. financial freedom

seomind · 76 weeks and 3 days ago

You completely match our expectation and the variety of our information. financial freedom

seomind · 76 weeks and 3 days ago

A good blog always comes-up with new and exciting information and while reading I have feel that this blog is really have all those quality that qualify a blog to be a one. financial freedom

seomind · 76 weeks and 3 days ago

What a really awesome post this is. Truly, one of the best posts I've ever witnessed to see in my whole life. Wow, just keep it up. financial freedom

seomind · 76 weeks and 3 days ago

This is an awesome motivating article.I am practically satisfied with your great work.You put truly extremely supportive data. Keep it up. Continue blogging. Hoping to perusing your next post financial freedom

seomind · 76 weeks and 3 days ago

Personally I think overjoyed I discovered the blogs. financial freedom

seomind · 76 weeks and 3 days ago

I like viewing web sites which comprehend the price of delivering the excellent useful resource free of charge. I truly adored reading your posting. Thank you! financial freedom

seomind · 76 weeks and 3 days ago

I’ve been searching for some decent stuff on the subject and haven't had any luck up until this point, You just got a new biggest fan!.. financial freedom

seomind · 76 weeks and 3 days ago

We connect your car to a computer that runs a diagnostic test–in only a minute!–to find whatever may be wrong, whether it’s spark plugs or compression. semi truck engine repair

bahamianiri · 63 weeks and 1 day ago

Your site is truly cool and this is an extraordinary moving article. PlanNet Marketing Review

seomind · 59 weeks and 5 days ago

A great website with interesting and unique material what else would you need. Yieldstreet Review

seomind · 59 weeks and 5 days ago

This is my first time i visit here and I found so many interesting stuff in your blog especially it's discussion, thank you. Shaklee Review

seomind · 59 weeks and 5 days ago

I was taking a gander at some of your posts on this site and I consider this site is truly informational! Keep setting up.. Yieldstreet Review

seomind · 59 weeks and 5 days ago

I really enjoyed reading this post, big fan. Keep up the good work andplease tell me when can you publish more articles or where can I read more on the subject? Yieldstreet Review

seomind · 59 weeks and 5 days ago

I just got to this amazing site not long ago. I was actually captured with the piece of resources you have got here. Big thumbs up for making such wonderful blog page! Shaklee Review

seomind · 59 weeks and 5 days ago

I really enjoy reading and also appreciate your work. The Land Geek Review

seomind · 59 weeks and 5 days ago

I wanted to leave a little comment to support you and wish you a good continuation. Wishing you the best of luck for all your blogging efforts. Shaklee Review

seomind · 59 weeks and 5 days ago

I read that Post and got it fine and informative. Please share more like that... The Land Geek Review

seomind · 59 weeks and 5 days ago

This is my first time i visit here and I found so many interesting stuff in your blog especially it's discussion, thank you. The Land Geek Review

seomind · 59 weeks and 5 days ago

pugpuppies95 · 39 weeks and 3 days ago

Thank you for your post, I look for such article along time, today i find it finally. this post give me lots of advise it is very useful for me. BAM University