Windows XP Bridging and Media Support for Home Networking Updated: May 21, 2003 On This Page Introduction Multiple Network Segment Solution Single Network Segment Solution Windows XP Network Bridge Introduction Windows XP supports a wide variety of networking technologies to connect computers in a home network. Each set of computers that cannot be directly attached together because they exist on separate hubs or cabling systems or are separate technologies define a LAN segment. Consider, for example, a home network consisting of four computers: Two computers equipped with Ethernet adapters and connected to the same Ethernet hub. This configuration defines two LAN segments: one LAN segment for the Ethernet-equipped computers and one LAN segment for the phoneline-equipped computers. It is possible to have multiple LAN segments using the same networking technology. Three of the computers use modern Ethernet adapters and connect to a common Ethernet hub. It may not be possible to plug the coaxial bus cable into the Ethernet hub.
Punching holes into firewall or "Why firewalls shouldn't be considered a ultimate weapon for network security" or "Secure TCP-into-HTTP tunnelling guide" Introduction Firewalls are heavily used to secure private networks (home or corporate). Usually, they are used to protect the network from: intrusions from outsidersmisuse from insiders In a TCP/IP environment, the typical corporate firewall configuration is to block everything (both incoming and outgoing), and give access to the internet only through a HTTP proxy. Still, this should not considered a ultimate weapon, and network administrators should not rely on the firewalls only. Encapsulation is the basis of networking. As soon as you let a single protocol out, tunelling allows to let anything go through this protocol, and thus through the firewall. This paper demonstrates how to encapsulate any TCP-based protocol (SMTP, POP3, NNTP, telnet...) into HTTP, thus bypassing the firewall protection/censorship (depending on your point of view) A word of warning: The problem
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Off-the-Record Messaging OTR library and toolkit This is the portable OTR Messaging Library, as well as the toolkit to help you forge messages. You need this library in order to use the other OTR software on this page. [Note that some binary packages, particularly Windows, do not have a separate library package, but just include the library and toolkit in the packages below.] UPGRADING from version 3.2.x Source code (4.0.0) Compressed tarball (sig) [Note that if you're compiling from source on win32, you may need to make this patch to libgcrypt-1.2.1.] Java OTR library This is the Java version of the OTR library. OTR localhost AIM proxy This software is no longer supported. This is a localhost proxy you can use with almost any AIM client in order to participate in Off-the-Record conversations. Source code (0.3.1) Compressed tarball (sig) Windows (0.3.1) Win32 installer (sig) OS X package
OpenSSH SFTP chroot() with ChrootDirectory Posted by niol on Tue 1 Apr 2008 at 10:49 The upcoming version of OpenSSH ( 4.8p1 for the GNU/Linux port) features a new configuration option : ChrootDirectory . This has been made possible by a new SFTP subsystem statically linked to sshd . This makes it easy to replace a basic FTP service without the hassle of configuring encryption and/or bothering with FTP passive and active modes when operating through a NAT router. To enable it, you obviously need the new version 4.8p1 . In /etc/ssh/sshd_config : You need to configure OpenSSH to use its internal SFTP subsystem. Subsystem sftp internal-sftp Then, I configured chroot() ing in a match rule. Match group sftponly ChrootDirectory /home/%u X11Forwarding no AllowTcpForwarding no ForceCommand internal-sftp The directory in which to chroot() must be owned by root. # chown root.root /home/user # usermod -d / user # adduser user sftponly This seems to work as expected : References :
(D)DoS Deflate - deflate.medialayer.com AbsolutVision Royalty Free Stock Photo Gallery PuTTY Download Page Home | FAQ | Feedback | Licence | Updates | Mirrors | Keys | Links | Team Download: Stable · Snapshot | Docs | Changes | Wishlist PuTTY is a free implementation of SSH and Telnet for Windows and Unix platforms, along with an xterm terminal emulator. It is written and maintained primarily by Simon Tatham. The latest version is 0.70. Download it here. LEGAL WARNING: Use of PuTTY, PSCP, PSFTP and Plink is illegal in countries where encryption is outlawed. Use of the Telnet-only binary (PuTTYtel) is unrestricted by any cryptography laws. Latest news 2017-07-08 PuTTY 0.70 released, containing security and bug fixes PuTTY 0.70, released today, fixes further problems with Windows DLL hijacking, and also fixes a small number of bugs in 0.69, including broken printing support and Unicode keyboard input on Windows. 2017-04-29 PuTTY 0.69 released, containing security and bug fixes 2017-02-21 PuTTY 0.68 released, containing ECC, a 64-bit build, and security fixes We've also redesigned our website. Site map
Perform SSH and SCP Without Entering Password on openSSH In this article, I’ll explain how to perform ssh and scp without entering the password using the SSH Public Key authentication with SSH Agent on openSSH There are two levels of security in the SSH key based authentication. In order for you to login, you need both the private key and the passphrase. Even if one of them is compromised, attacker still cannot login to your account, as both of them are needed to login. This is far better than typical password based authentication, where if the password is compromised, attacker can gain access to the system. There are two ways to perform ssh and scp without entering the password: No passphrase. Following 8 steps explains how to perform SSH and SCP from local-host to a remote-host without entering the password on openSSH system 1. [local-host]$ ssh -V OpenSSH_4.3p2, OpenSSL 0.9.8b 04 May 2006 [remote-host]$ ssh -V OpenSSH_4.3p2, OpenSSL 0.9.8b 04 May 2006 2. [local-host]$ ssh-keygen Generating public/private rsa key pair. 3. 4. 5. 6. 7. 8.
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