Zip files

[Fred @ Slate Industries]

Are company has Symantec antivirus set for

not allowing any .Zip files to be downloaded.

I have to ask for a CD to be sent to me

Or download it at home and rename the file extention then mail it to myself.

ye Ha....

 

Is anyone else going through this?

Is there a Work around?

 

Thanks

Tony

[Rekd™]

Disable it if you can. (Don't let IT know!)

[Harryman]

You can rename 1234.PIZ and it will sail right through. Then rename back to 1234.ZIP on the other end and you're dancin'.

[Guest CNC Apps Guy 1]

Yeah, I have the same problem. I tell people to e-mail me a zipped (or RAR , which RAR does not have a problem coming in at all) and rename the extention to .zit or something else and it works liek a charm, pain in the arse but that's the price we pay for the ability to freely e-mail.

[Matthew]

I have this issue with one of my customers (large corporation). A .ZIP file will be held up for days, but renaming it to a .TXT file and it'll go through while I'm talking to them on the phone.

[Jayson Kramer]

James calls it a Zit.Hope it does not come thru all pusy and all.

[Guest CNC Apps Guy 1]

It ooooozes trust me

[Teh Bear without Brains kinda idiot]

Soon antiviruses will start to detect zip files by it`s header PK... and your tricks guys wouldn`t help .(at least I would do so , being antivirus programmer )

Anyway ,why not to switch completly to rar ?

Much better !

[Teh Bear without Brains kinda idiot]

And in winzip in open files write *.zit

and open it

It will be extracted OK (checked )

You can associate zit extention with winzip and open it in any shell like windows commander or Explorer by double click .

Extention in zip has no meaning ,it is only for shell .

Header PK... defines that it is zip file for

pkzip or it`s applications like winzip

HTH

WTHH

 

Teh humbliero .

[perfecseal mankato]

Our company has this policy,

it is through out the worldwide corporation. As of now renaming is not going thru all the time.

Our corporate I.T. department will not budge on

letting zip files thru. If you cannot get your company to let zip files thru, have them set your e-mail to allow a larger file to go out and come in.

[Teh Bear without Brains kinda idiot]

~~~~~~~~~~~

As of now renaming is not going thru all the time.

~~~~~~~~~~

Well , I also do abide the policy of my company .

But , only theoretically ,change extention to zit ,open Ur file in any hex/binary editor like hexed and change first byte value from 50 to 49 and save your file .

it will always pass through anything .

After recepting return value from 49 to 50 and you will be able to open it .

 

Teh hexman.

[Teh Bear without Brains kinda idiot]

Rar is safer and much better than Zip

One more thing to consider

~~~~~~~~~~~~

Pkzip/WinZip password protection

The name rings a bell, doesn't it? Pkzip and WinZip compression utilities can create password-protected archives. This protection method is FAR less reliable than the ones described above. Cryptanalysts claim that the encryption method implemented in zip compression has serious weeknesses that make it possible to crack it other than by trying all possible letter combinations until the right one is found. So beware and use this method only if you are sure that the adversary is not very powerful. But if the attack is carried out on a standard PC using freely available crack programs, zip password protection can be a fast and easy-to-use tool, although not devoid of the "family" drawback of all symmetric cryptosystems.

 

There is a number of ZIP crackers available on the Net, you can try **********by ****** **** or *******(both are freeware), or a nice shareware GUI utility **************** . These utilities either try passwords out of a big dictionary, or perform a brute-force attack by trying all possible combinations. According to psychologists most men use 4 letter obscenities as passwords and most women use their boyfriends', husbands' or children's names. So if your wife's favorite password is Michael, whereas your name is Stephen... Here is a simple rule: don't use words that are likely to be in a dictionary. Use long passwords (up to 24 sign), containing digits and symbols (?!$ etc.). A brute force attack at 200,000 combinations per second (the rate typical for PC Pentium 100) for a 6 character password gives us the following chart:

 

 

Character Set Max. Time Required

Digits only 5.0 seconds

Lower case letters only 25.7 minutes

Symbols only 1.8 hours

Lower & upper case letters 27.5 hours

Lower & upper case letters, digits 3.3 days

Lower & upper case letters, digits, symbols 42.5 days

 

It was bench in the days of Pentium100

Now we have computers 25 times faster and 50 times bigger Ram

~~~~~~~~~~~~~~

Stolen from somewhere

Teh paranoid root

[Guest CNC Apps Guy 1]

I use WinRAR and have NO problems now getting stuff through. WinRAR is a MUCH better compression utility than WinZIP IMHO.