Updating to latest ubuntu version
1) Wireshark -- network traffic analyzer Wireshark is a network traffic analyzer, or "sniffer", for Unix and Unix-like operating systems.A sniffer is a tool used to capture packets off the wire.Using the IP and the Ethernet injection modes, almost any custom packet can be crafted and injected.Install nemesis in ubuntu sudo aptitude install nemesis 11) Tcpdump -- A powerful tool for network monitoring and data acquisition This program allows you to dump the traffic on a network.
It is intended as a replacement for rlogin, rsh and rcp, and can be used to provide applications with a secure communication channel. In some countries it may be illegal to use any encryption at all without a special permit.Wireshark decodes numerous protocols (too many to list).This package provides wireshark (the GTK version) Install Wireshark in Ubuntu sudo aptitude install wireshark 2) Nessus -- Remote network security auditor The Nessus® vulnerability scanner, is the world-leader in active scanners, featuring high speed discovery, configuration auditing, asset profiling, sensitive data discovery and vulnerability analysis of your security posture.You can use this tool to track down network problems, to detect "ping attacks" or to monitor network activities.Install tcpdump in ubuntu sudo aptitude install tcpdump 12) Open SSH -- secure shell server This is the portable version of Open SSH, a free implementation of the Secure Shell protocol as specified by the IETF secsh working group.As a command-line driven utility, Nemesis is perfect for automation and scripting.Nemesis can natively craft and inject ARP, DNS, ETHERNET, ICMP, IGMP, IP, OSPF, RIP, TCP and UDP packets.Install nmap ubuntu sudo aptitude install nmap If you want nmap frontend install the following package sudo aptitude install zenmap 4) Etherape -- graphical network monitor modeled after etherman Ether Ape is a graphical network monitor for Unix modeled after etherman. It supports Ethernet, FDDI, Token Ring, ISDN, PPP and SLIP devices. Running additional tests, such as chkrootkit, is recommended.Featuring link layer, ip and TCP modes, it displays network activity graphically. It can filter traffic to be shown, and can read traffic from a file as well as live from the network. Install rkhunter in ubuntu sudo aptitude install rkhunter 8) tiger -- Report system security vulnerabilities TIGER, or the ‘tiger' scripts, is a set of Bourne shell scripts, C programs and data files which are used to perform a security audit of UNIX systems.It was designed to rapidly scan large networks, but works fine against single hosts. It checks for: -- MD5 hash changes; -- files commonly created by rootkits; -- executables with anomalous file permissions; -- suspicious strings in kernel modules; -- hidden files in system directories; and can optionally scan within files.Nmap runs on all major computer operating systems, and both console and graphical versions are available. Using rkhunter alone does not guarantee that a system is not compromised.