I am very new to encryption. Right now I am making certs and keys using RSA public-key cryptography. Is RSA the best? What other public-key cryptography <?> is there to use? Is <?> a cipher or algorithm? Whats the difference?
View 2 RepliesHow can I forward all traffic from a public IP to another public IP. Let's say I have a first debian box named box1 with eth0 = 1.1.1.1 and eth0:1 = 1.1.1.2 and I want to forward all traffic from 1.1.1.2 to "box2" located somewhere else over the internet and having for eth0 2.2.2.2 Both 1.1.1.0/24 and 3.3.3.0/24 are public IP ranges.
View 1 Replies View RelatedQuestion: The USA forbids the export of secure cryptography. NSAKEY has already been discovered in the Windows cryptograhic API. Since the Linux-Kernel is hosted in the USA, how secure is its cryptography ?
View 1 Replies View RelatedI would like to know if provisions for cryptographic algorithms, especially things like digital signature of packages/applications etc are a native feature of any linux package installer/package manager.
Another question is: Do all linux based systems natively support cryptography? if yes, what engines do they use? Do they all use openssl or do they use high level java based engines like Harmony(Apache) or Bouncy castle?
I have an ubuntu 10.10 and I know openssl support is already provided. However I want to know if any system level program actually uses it or not.
I'm trying to write a p2p file sharing program using python's built-in libraries. Everything is going well. The only thing is that i'd like to be able to use openssl public and private keys so only a host with the public key could access/decrypt the filesharing. I've gotten these libraries (httplib, basehttpserver, ssl, os) to work using just a pem file containing both the public and private keys but no success with them seperately. Can someone point me in the right direction or offer an alternative? PS, the goal of the project is to create an anonymous, decentralized, secure file sharing program. I want to be able to upload this to sourceforge so everyone can use it, if that's any incentive
View 2 Replies View RelatedI run the following file with the >log.log redirector and it does not capture errors.
#!/bin/bash
echo ************************BEGIN LOG******************************
date +"%m/%d/%Y %H:%M:%S $HOSTNAME"
cp -f /scripts/original/clamscans.log /scripts
[code]....
The following errors show up when I run from the file from the term window, but are not written to log.log:
tar: /public/public/clamscans/*.txt: Cannot stat: No such file or directory
tar: Error exit delayed from previous errors
mv: cannot stat `/public/public/clamscans/*.txt': No such file or directory
I know with windows you can add the 2>&1 to capture error data. Is there such a thing for Linux?
On my stable/squeeze computer, I have /etc/ssh/ssh_host_rsa_key.pub but I cannot find this in my testing/wheezy computer. Why can't I find it? Did the way to retrieve one's public rsa key change? I have openssh-client and openssh-server installed on both computers.
View 2 Replies View RelatedI bought vps server and now I want to upload openssh public key. With this command:
ssh-copy-id username@ipaddress
the result is:
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: ERROR: ssh: connect to host xxxxxxxxx port 22: connection timed out
with this command:
cat ~/.ssh/id_rsa.pub | ssh username@ipaddress "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys"
the result is:
ssh: connect to host xxxxxxxxx port 22: connection timed out
also with this:
ssh username@ipaddress
the result is:
ssh: connect to host xxxxxxxxx port 22: connection timed out
Can someone post how to use irssi with bitlbee . I know how to use the Bitlbee public servers but I would rather install it and use it that way.
View 4 Replies View RelatedI often run into this and it's such a hassle that I have had no choice but to ignore it. But, I would like to run it properly but I don't understand why my sources list is 'wrong' or has incorrect info so that it's often not verified or authenticated. The public keyring is wrong or the source or both? I get these messages, for e.g.:
# apt-get update && apt-get install dmo-archive-keyring && apt-get update exit with result:
W: GPG error: http://unofficial.debian-maintainers.org squeeze Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9EEBC8DB9B9C3CB6
I probably don't need that but I ran into a similar error trying to authenticate the multimedia keyring. Not sure it worked but I am guessing the system works the same with all the authentications? I hope to understand what I'm doing wrong and what the process is.
I have added the following line in sources.list, deb [URL] squeeze main non-free
Running apt-get update i get this error message,
Reading package lists... Done
W: GPG error: http://www.debian-multimedia.org squeeze Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 123456789
Do i need to generate this public key 123456789 ? If so, how?
Running apt-key update has not solved the problem.
apt-get install debian-archive-keyring was a recommended solution from some googling.
I have also read this page, [URL] , but how to add a key is under construction.
I have two computers running Debian Squeeze. I'm trying to set up the public keys for them so that I don't need to use passwords to log in. As far as I know, I did the same thing for both, however only one is working.Here is the connection output for eachBroken:
Code:
OpenSSH_5.1p1 Debian-5+b1, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /etc/ssh/ssh_config
[code]...
I turned on my debian systems. Update tells me that I have 26 updates, mostly to samba. I proceed and it gives me an error saying something about public key not available. Suggests to try smart update. I do that, smart update says I have 129 updates available (reasonable I guess b/c I have not updated in close to a year)
I proceed with smart update...now it says I can install 137 updates, I hit Check, tells me it is downloading packages, then, I get an error:
W: GPG error: http://code.highrise.ca lenny Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B95C4D3ECC4D3D27
I don't understand why....What is the solution for this?
I installed Chromium Browser and made it default. The version which is available through squeeze and wheezy main is a dinosaur, and as such I cannot install any Chrome addons. I tried ubuntu or launchpad ppa for Chromium-Daily. I added [URL] maverick main to my Third party Repositories. Its not working.
The terminal returns an error:
W: GPG error: [URL] maverick Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5A9BF3BB4E5E17B5
ls -al ../public-back
drwxrwxr-x 4 apache apache 4096 Apr 19 03:32 templates
ls -al ../public-back/templates
drwxrwxr-x 2 apache apache 4096 Apr 19 03:33 content
[code]....
How do I move the contents of /public-back/templates recursively with permissions into /public/templates ?
I'm pretty new to Debian, and I'm trying to set up Apache 2, and I want to set the DocumentRoot to public_html in my home dir, but I run into some problems.
I tried to change this (/etc/apache2/sites-available/default):
<VirtualHost *:80>
ServerAdmin webmaster@localhost
DocumentRoot /var/www/
<Directory />
Options FollowSymLinks
AllowOverride None .....
When I restart apache I get a 403 error, and when I change it back to its original, it works fine. I want to change the DocumentRoot so I can upload files via FTP to ~/public_html.
~/public_html has the mode 777.
I've installed it properly until it works now, it does send emails and receive them, but heres the problem.
1) it does not send emails to a certain domain, unless i do dpkg-reconfigure on exim4 and put the domain on allowed relay... can't i just put something on settings which allow to send emails to ALL domains?
2) EVERYONE can connect to the server by telnet from any position, terminal or pc, and just use an existing user to send emails to anyone.... example, i have testuser123 setted up in debian/exim4 .. then they simply write "mail from:testuser123@host.dot" and the server accepts it.. without even request an authentication for that. And this is a problem, because everyone can use my email addresses to send emails to whoever.. heaven for spammers/hackers..
In one of my customers, the new internet connection have no public IPV4(using GCNAT), only public IPV6.
And there are various services that require external access, like, vpn (openvpn), a java/web system, ssh, rdp(windows).
fileServer(by vpn).
All is running ok in IPV4.Maybe, the solution is a NAT 6to4. We know this is the future, no more public IPV4.
Just added Squeeze multimedia repositories in source list,but get this after reload :
W: GPG error: ftp://ftp.debian-multimedia.org squeeze Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 07DC563D1F41B907
However,update for Audacity & Mplayer showed in Update Manager,and I successfully updated.
My ethernet controller is configured as such:
My /etc/resolv.conf file is normally just set up to use Google's public DNS:
When I connect to the network at the university library, it totally overwrites my /etc/resolv.conf file to something like:
This is pretty annoying, so I tried comprimising by making a file with the school's domain and search entries plus the Google nameservers, then revoking write permission on the file. However, I couldn't access any domain name with this config on their network, so I reverted to using their nameservers. I keep all the school's entries commented out when I connect to my home network.
My ultimate question is what is actually overwriting the file? I suspect that my connecting through DHCP is responsible. Whatever it is, I'm pretty annoyed that no back up file was created.
I'm trying to give some windows users a permanent connection to a samba share behind a firewall over the public Internet. I know I can give them access with something like winscp (which they have done) but really I'd like to do it with a VPN so it seems seamless to the user. However I have no idea how to set up the server to support this and am finding the documentation a bit confusing. The samba share is on a Debian box and the firwewall is a Linksys WRT54GL.
View 1 Replies View RelatedWhy everytime I send apt-get update I got this error on the last lines? Reading package lists... Done W: GPG error: [URL] Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8F91B0E6C862B42C Here is my /etc/apt/sources.list
[Code]....
I have a debian server installed with a static ip. Now i am able to ping my ip, but when i try to configure a domain name with the nameserver as my ip, i am not able to ping the domain name
eg:
I can't find GNU's public key anywhere. I searched on ftp.gnu.org and I googled, and I can't find their public key.
View 2 Replies View RelatedThe 'Public' folder in my home directory keeps being recreated, after I keep deleting it. Is there anyway to make it go away forever?
View 2 Replies View RelatedI'm trying to add the PGP public key for the new repository. Here are the two lines I want to add for my e-mail but don't know where to add on the new repository.[URL]... I went to to the Synaptic Manager but could not find or where to place it. Would I create a new repository?
View 9 Replies View RelatedThe public key isn't available when I try to use the Update Manager; clicking the "Check" button results in a popup with the following text:
Code:
W: GPG error: http://ppa.launchpad.net lucid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6E871C4A881574DE
I tried adding the public key via:
Code:
sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 6E871C4A881574DED
Is that the right code to enter? Because when I did that it didn't fix the problem.
When I do 'sudo apt-get update' I get this error now:
Code:
Hit http://ppa.launchpad.net lucid/main Packages
Hit http://ppa.launchpad.net lucid/main Packages
Fetched 116kB in 1s (70.5kB/s)
Reading package lists... Done
W: GPG error: http://ppa.launchpad.net lucid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1A0771178279047A
I'm completely new to Ubuntu, I've just installed 10.04 and this is only the second week I've had it, and I'm not sure what is going on with this. Whenever I try to check for updates I get this message: The repository may no longer be available or could not be contacted because of network problems. If available an older version of the failed index will be used. Otherwise the repository will be ignored. Check your network connection and ensure the repository address in the preferences is correct.
Quote:
GPG error: [URL] feisty Release:
The following signatures couldn't be verified because the public key is not available:
NO_PUBKEY 2D6CFB44DD800CD9
Failed to fetch cdrom://Ubuntu 10.04 LTS _Lucid Lynx_ -
Release i386 (20100429)/dists/lucid/main/binary-i386/Packages.gz
Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Failed to fetch cdrom://Ubuntu 10.04 LTS _Lucid Lynx_ -
Release i386 (20100429)/dists/lucid/restricted/binary-i386/Packages.gz
Please use apt-cdrom to make this CD-ROM recognized by APT.
Apt-get update cannot be used to add new CD-ROMs Some index files failed to download, they have been ignored, or old ones used instead.
If been getting this error: W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: [URL]... maverick Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY DB141E2302FDF932. W: Failed to fetch [URL]... is this a temporary situation?
View 2 Replies View Related