What are signatures?

What exactly is a signature? I know how to use it, but I am interested in more detail.
Is it a separate entity from the email body? Is it just pasted into the body?
Why are there problems sometimes, such as in an older version of mail, if there was a picture attached, it had to be in a certain location in the email or else there was a problem. (I don't remember that exactly anymore). Is there still a problem with signatures and mail?
Does the placement of the signature set mail up for problems? (e.g., at the end of the quoted text or above it)
Answers to these questions and any other issues would be appreciated.

Judy,
Good questions, but perhaps not one answer. Depending on the composition of the Signature, such as when Rich Text and links are used, there can be problems with the users of certain mail clients on Windows platforms. With Mail 2.0, there can be trouble with Rich Text and attachments, and complications from using a Signature. All the complications revolve around (at least in my opinion) whether text included in the Signatures introduces HTML into the message, and historically Mail has neither supported composing in HTML, nor handles it well when included from other sources.
My advice is to place no links in a Signature, or if included, not have them first or last. Furthermore I recommend placing ALL attachments AFTER the Signature, and have no typing after adding the attachments.
Any problems created are not of uniform consequence to all mail clients, and may not bother some, at all. The surest format to send to those using Outlook or Outlook Express is to only compose in Plain Text, and only have a Signature that is useful it sent in Plain Text.
For a look at various message formats, send messages to yourself, and then when opened, click on View in the Menubar, place the cursor on Message, and choose Raw Source. This will show you what results in the body of the message.
Ernie

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When trying to send a pdf for multiple digital signatures, it keeps erroring out. What are some reasons?

I am having trouble sending out a document for digital signatures for multiple people. I enter the signature fields and click on Distribute. It then allows me to choose the receiving parties. I click on <SEND> and it processes for a moment and then I receive the following two errors: "Failed to send" followed by "Form distribution is aborted". It was working for me earlier and isn't now. I am fairly new to Acrobat and especially Digital Signatures. What are some possible reasons I am getting this error?

I finally got the document to send out by unclicking the "Collect name & email from recipients to provide optimal tracking" button, however, the responses come in as anonymous, so it's not real helpful with tracking my responses. Plus, I don't know if I'll encounter problems with follow up. The normal tracking system allows me to resend a message to those who have not responded. Now I guess I would just resend the request to those I have determined have not signed. Still working through the bugs but I'll update what I know and figure out here. Perhaps I will come to a solid solution and give a better summary.
As of now, I am sending and receiving responses... but the recipients have to change the received file to save as it is coming to them as read-only. Seems like this should be a whole lot less complicated.

What are security signatures? How do they help in averting threat?

What are security signatures? How do they help in averting threat?

Hi,
Cisco devices use signature-based technology to detect network intrusions(attacks).
These signatures detect the network intrusion type with the help of its Sensors as they scans network packets while scanning packets they uses their signatures to detect the intrusion type like: denail-of-service attack (DoS).
The Sensor works like virus checking programs. The IPS carries a set of different signatures that sensor uses to with network activity. when a match is found, the sensor will take necessary action like logging or as defined in policies.
We can also modify the signatures according to our need.
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What are the commands to add and enable signature of attacks in ASA?

What are the commands to add and enable signature of attacks in ASA when testing in GNS3?
or this function can only be tested by add virtual client such as window xp and install a software ASA ?
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Sir, Downloaded from HP Official Site
Type: BIOS Version: F.50 Rev. A(4 Aug 2014) Operating System(s): Microsoft Windows 7 Professional (64-bit) | File name: sp68040.exe (7.7 MB)
My Laptop Model No. 4530s is not compatable for the following two options, then resort the last option. Made bootable USB key with the help of Rufus application MS DOS option. When I reboot, some terminal type opened to run commands. Please help me the easiest and safest way for this model of Laptop
This package includes several methods for updating the BIOS version as follows:
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- Use System Software Manager (SSM) to update the system BIOS on PCs in a network.
- Create a bootable USB Key to update the system BIOS.
Thanks and Regards
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What are the security settings to lock down a form with fillable fields and yet allow someone with Reader to fill in the fields as will as save the form and print it?

What are the security settings to lock down a form with fillable fields and yet allow someone with Reader to fill in the fields as will as save the form and print it?

You want to allow someone to open your document and fill out the form (in the fields you have created), but not change or edit the form, right? Here's the answer - assuming you are using Acrobat Pro and someone will be opening the PDF using at least Acrobat Reader 9 and up:
Tools > Protection > Encrypt < Encrypt with Password
Answer YES to change the security.
A new window opens:
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     Select: Permissions (Check the box next to "Restrict editing and printing of the document.")
     Change the following 2 settings from the drop-down box:
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          Changes Allowed: Select Commenting, filling in form fields, and signing signature fields
          Leave selected: "Enable text access for screen reader devices for the visually impaired"
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What Are the Security Implications of not Completely Signing Database?

Hello everyone,
What are the security implications of not completely signing the database?
From http://www.archlinux.org/pacman/ ,
The following quote implies that the database exists merely just in case hand tweaking is necessary:
maintains a text-based package database (more of a hierarchy), just in case some hand tweaking is necessary.
However, considering that there are cases that pacman's local database needs to be restored, there are implications that the database is essential for pacman to function properly.
From https://wiki.archlinux.org/index.php/Ho … l_Database :
Restore pacman's local database
Signs that pacman needs a local database restoration:
- pacman -Q gives absolutely no output, and pacman -Syu erroneously reports that the system is up to date.
- When trying to install a package using pacman -S package, and it outputs a list of already satisfied dependencies.
- When testdb (part of pacman) reports database inconsistency.
Most likely, pacman's database of installed software, /var/lib/pacman/local, has been corrupted or deleted. While this is a serious problem, it can be restored by following the instructions below.
I know that all official packages (from core, extra, community, etc.) are signed so that all files should be safe, but I'm just paranoid.
What if the database was hacked? Will this lead to installation of harmful software?
Sincerely,
Cylinder57
Last edited by Cylinder57 (2012-10-15 03:42:31)

Cylinder57 wrote:
From this quote:
Allan wrote:But, the OP (also?) talks about the local package database on his computer. That is not signed at all as there is no point. If someone can modify that, then they can regenerate the signature, or just modify any other piece of software on your computer.
Is it going to be easy for anyone other than the authorized user to modify the local package database?
Allan basically answered that with the quote above already as I understand it. Someone who has access to the installation, e.g. is able chrooting your PC via USB, is not held back by any ACLs. However, modifying the local database only makes limited sense because the packages are already installed. Pacman would only recheck, if you re-install a package. The only really relevant attack vector for the package database is
(1) installing an older package with a vulnerability,
(2) re-placing the up-to-date package sig in the local database with the older one and
(3) modifying the system, e.g. via pacman.conf excludes, to not update that.
then also re-installing would not create a sig-error and you get stuck with the bogus old package.
With a signed database this would not be possible. However, as Allan wrote earlier also with a signed database that criminal can manually install (totally leaving pacman & package cache) whatever it needs in this scenario. So, if you are -really- paranoid about that, you probably want to spend (a lot of configuring) time with something like the "aide" package.
Cylinder57 wrote:
And, are the following statements correct:
If the repository databases are modified, the hacker might be able to modify the packages on the server (Considering that if someone can modify the local package database, that person can modify any other piece of software on that particular computer.)
However, pacman won't let users from installing the modified packages (due to package signing,) unless at one person with access is bribed (at least, for an individual package.)
I don't know the intricacies of the server infrastructure - only saw they have great names :-), but I am pretty certain your statements assume that correctly. It is pretty unlikely that someone able to modify the central repository database fails at placing a bogus package for shipping with those access rights at this time. Yet it does no harm not to post any details of such a scenario here imo. In any case: A compromised mirror would be enough for that - and easier to achieve (hacked anywhere or e.g. in a non-democratic state). Plus you also answered it yourself. The keys are key for our safety there. Which keeps me hoping that no criminal lawnmover salesmen frequent the Brisbane area.
As you put up a thread about this, one question you can ask yourself is:
Have you always checked on updates new signatures keys which pacman asks about? If you ever pressed "accept/enter" without checking them out-of-band (e.g. the webserver), that compromised mirror database might have just created a "legitimate" key .. user error, but another attack vector the database signing would catch.
edit: Re-thinking the last paragraph just after posting, I now believe it would not be that easy as implied - simply because the bogus key is not trusted by one of the master keys. The pacman pgp trust model should catch that without database signing. At least it would if only the official repositories are activated, but that's a pre-requisite to the whole thread.
Last edited by Strike0 (2012-10-20 23:01:26)

What are the steps requried for r/3 to xi and xi to r/3 configuraiton ?

Hi Experts
What are the steps requried for r/3 to pi 7.1 and pi 7.1 to r/3 configuraiton ?
Thanks & Regards
G.Praveen Kumar
Edited by: praveen.tecnics on Apr 1, 2009 4:51 PM

In case of RFC already signature will be defined in R/3 itself the same will there in PI too after importing .
In case of idoc also you just need to import for the usage and can be used depending on scenario
if the above answers doesnt suite your question then can you post query in detailed way
In case of Configurations
RFC destination types differ for idoc and RFC
in idoc SM59 Type 3 conection you need to create
for RFC you need Type T connection
HTH
Rajesh

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What are Crypto Cards, and what are they different from Java Cards?

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Does this help
tring
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