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ccrypt is a commandline utility for encrypting and decrypting files and streams. It was designed as a replacement for the standard Unix crypt utility, which is notorious for using a very weak encryption algorithm. ccrypt is based on the Rijndael cipher, which is the U.S. government's chosen candidate for the Advanced Encryption Standard (AES). This cipher is believed to provide very strong security. A compatibility mode is included for decrypting legacy "unix crypt" files.
The GNU Privacy Guard
GnuPG (the GNU Privacy Guard) is GNU's tool for secure communication and data storage. It can be used to encrypt data and to create digital signatures. It includes an advanced key management facility and is compliant with the proposed OpenPGP Internet standard as described in RFC2440. As such, it is meant to be compatible with PGP from NAI, Inc. Because it does not use any patented algorithms, it can be used without any restrictions.
Ups shutdown script
Ups shutdown script is a set of bash scripts that can be used to monitor a SNMP UPS and shut down servers if the power goes out. One of the scripts can run on a monitoring server and will report back when a UPS has gone offline.
sXid is an all in one suid/sgid monitoring program designed to be run from cron on a regular basis. Basically it tracks any changes in your s[ug]id files and folders. If there are any new ones, ones that aren't set any more, or they have changed bits or other modes then it reports the changes in an easy to read format via email or on the command line.
ngrep strives to provide most of GNU grep's common features, applying them to the network layer. ngrep a pcap-aware tool that will allow you to specify extended regular expressions to match against data payloads of packets. It currently recognizes TCP and UDP across ethernet, ppp and slip interfaces, and understands bpf filter logic in the same fashion as more common packet sniffing tools like tcpdump and snoop.
Socat is a relay for bidirectional data transfer between two independent data channels. Each of these data channels may be a file, pipe, device (terminal or modem, etc.), socket (Unix, IP4, IP6 - raw, UDP, TCP), a client for SOCKS4, proxy CONNECT, or SSL, etc. It provides forking, logging, and dumping, different modes for interprocess communication, and many more options. It can be used, for example, as a TCP relay (one-shot or daemon), as a daemon-based socksifier, as a shell interface to Unix sockets, as an IP6 relay, for redirecting TCP-oriented programs to a serial line, or to establish a relatively secure environment (su and chroot) for running client or server shell scripts with network connections.
pdfcrypt allows you to set permissions on a PDF file. For example, you can publish a document without permitting users to print it. The button to print the file will be disabled in the Acrobat Reader application. It can be used as a batch application to set permissions on a large group of PDF files, or as a filter in a Unix pipeline, or within a CGI application. Only binary executables are distributed, but the original Perl source code may be requested.
PlexCrypt protects documents and folders via PKI-based encryption using secured algorithms such as AES, Blowfish, CAST, DES, ElGamal, IDEA, IES, RC4, RC6, RSA, Rijndael, Serpent Skipjack, Twofish, etc. It allows users to encrypt multiple files and folders automatically. PlexCrypt allows users to digital sign documents and folders and use that signature to verify that original document has not been maliciously or accidently altered. It supports MD5WithRSAEncryption, SHA1WithRSA/ISO9796-2, MD2WithRSAEncryption, RIPEMD160WithRSAEncryption, SHA1WithRSAEncryption, RIPEMD160WithRSAEncryption, MD5WithRSA/ISO9796-2, RIPEMD160WithRSA/ISO9796-2, RIPEMD160WithRSA/ISO9796-2 algorithms for digital signatures. PlexCrypt also allows users to archive a set of files and folders in the ZIP format and extract them later. In addition, it allows users to create and manage digital certificates and key-pairs for encryption and digital signatures.
Looper Event / Alert System
Looper is a highly modularized application designed to simplify the event / alert model. Primarily used for Network Management, this application can be used to accomplish a variety of tasks related to logging and alerting such as listening for SNMP traps and logging to a file or sending notification to Netcool (a la "trapd probe"), reading a log file for alerts and sending notification via e-mail, parsing syslogs and sending notifications to Netcool (a la "syslog probe"), etc. Looper can also be used as an ad-hoc Netcool probe or Gateway.
Green Black List Creator for Procmail Recipes
Green Black List Creator for Procmail Recipes reads a .aliases file and an orgs file and creates procmail recipes to filter your mail. The README file includes configuration information for procmail to help fight spam.
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