Networking

• SAS's Accounting Statistics
  Sasacct fetches traffic stats via ipchains, ipfstat, iptables, pf, Cisco IP accounting, and SNMP. It makes mrtg-like graphics using rrdtool. ...
  
• arphound
  Arphound is a tool that listens to all traffic on an ethernet network interface. It reports IP/MAC address pairs as well as events such as IP conflicts, IP changes, IP addresses with no RDNS, various...
  
• Network Traffic Analyser
  Network Traffic Analyser is designed to be an extremely powerful, configurable, and versatile tool for monitoring network traffic. It can be used as a plain sniffer, as a tool for accounting, dynamic...
  
• NetTraf
  NetTraf consists of a daemon that gets information from a Linux interface and sends it on the network to NetTraf clients. Clients then can use the information to show to the user how the connection i...
  
• icpld
  ICPLD (Internet Connection Performance Logging Daemon) is a connection monitor that sends ICMP requests to IP addresses of your choice and monitors if your machine has a working network connection. ...
  
• isdnwatch
  isdnwatch runs as daemon and monitors your ISDN line in intervals. Each time an incoming call is noticed, the originating number and the called MSN are checked and an action specified by user is take...
  
• httpMonitor
  httpMonitor is a Python program which lets you monitor the HTTP traffic between a browser and a Web server. ...
  
• barricade
  barricade is a simple implementation of the door knocking method aimed to open your network service or firewall only if a special ICMP echo request packet is sniffed from the network interface. ...
  
• gulog
  gulog is a GTK UUCP log and traffic monitor. It shows the actual traffic generated by a uucico session. ...
  
• BWstat
  BWstat is a network traffic statistical tool. It features user- based authentication/privileges, yearly, monthly, daily, and hourly statistics, support for themes, and is easy to set up and use. ...
  
• ipac
  ipac is an IP accounting package for Linux. It collects, summarizes, and nicely displays IP accounting data. The output of ipac can be a simple ASCII table, an ASCII graph, or even images with graphs...
  
• ssldump
  ssldump is an SSLv3/TLS network protocol analyzer. It identifies TCP connections on the chosen network interface and attempts to interpret them as SSLv3/TLS traffic. When it identifies SSLv3/TLS traf...
  
• Accountability Pal
  Accountability Pal monitors your network and keeps track of who is using the Internet and what they are viewing, downloading, uploading, etc. It emails a report of each user's activity to the person/...
  
• NetworkServicesChecker
  NetworkServicesChecker (NSC) is a tool for sysadmins that checks the status of services on servers. It tries to connect to services as configured, and reports if a connection has been established or ...
  
• Evarp
  Evarp is a program for monitoring network traffic that uses the ARP protocol. ...
  
• Router Traffic Analysis
  Router Traffic Analysis is a daemon than takes some statistics about network flow, such as the top 10 most used ports on a network. It works only with the Arts++ library, thus every program that crea...
  
• rtdump
  Rtdump is a version of tcpdump modified to capture traffic on remote systems and networks. ...
  
• Netpeep
  Peep is a network monitoring tool that represents network information via audio output. Network diagnosis with Peep is made not only based on singular network events, but on whether the network as a ...
  
• Fair NAT
  Fair NAT is a script for configuring NAT on dedicated Linux routers. ...
  
• read4me
  read4me is a CGI program that reads RSS feeds and, using bayesian stats, reports how likely it is that you will like the articles. ...
  
• NWatch
  NWatch is a security tool useful for network monitoring, policy development, and certain types of intrusion detection. ...
  
• ipaudit-web
  Built upon ipaudit, ipaudit-web logs network activity, maintains traffic summaries, and presents Web-accessible graphs and reports. It is useful for identifying heavy bandwidth users, DoS attacks, an...
  
• Aware
  Aware is a high performance distributed event processing framework built for systems management. It comes with probes for common network services and system resources. Additionally, Aware allows the ...
  
• PHP Client Sniffer
  PHP Client Sniffer is a PHP class file that allows one to quickly determine the client's browser and system information based on the HTTP_USER_AGENT string. ...
  
• Pacemaker
  Pacemaker is a dynamic rate-limiting script that watches network traffic and determines which machines are probably abusing your network. Pacemaker catches things like Windows worm scans, port scans,...