Free destination ip software for linux

GENRIP is a kernel driver (presently for Linux only) that enables you to carry ethernet frames over generic low-speed/low-power serial radios, such as Microhards MHX series radios. It is intended to speed up the development cycle for those creating low-powered Embedded telemetry and SCADA devices, but may have other applications as well. Once installed, the serial radio simply appears as a network interface like this:

[root@lindev]# ./ifconfig gr0
gr0 Link encap:Generic Radio IP HWaddr 00:00:02:04:06:08
inet addr:192.168.15.1 Mask:255.255.255.0
UP RUNNING MTU:234 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:30
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

GENRIP was originally based upon Stuart Cheshires STRIP driver, which is part of the Mobile Computing Group at Stanford Universitys Mosquitonet project. It has been radically modified since.

GENRIP was ported to this application by Lawrence Wimble of Design On Demand, Inc. Design On Demand, Inc. maintains GENRIP and hopes that youll call them if you need help with an embedded project using GENRIP (or any embedded project for that matter).

GENRIP is released for Linux under the GPL. A port to FreeBSD is planned in the near future.

Netstat-nat is a small program written in C. It displays NAT connections, managed by netfilter/iptables which comes with the > 2.4.x linux kernels. The program reads its information from /proc/net/ip_conntrack, which is the temporary conntrack-storage of netfilter. (http://netfilter.samba.org/). Netstat-nat takes several arguments but they not needed.
-h displays help
-n dont resolve IPs/ports to host/portnames.
-p protocol display NAT connections with protocol selection.
-s source host display connections by source IP/hostname.
-d destination host display connections by destination IP/hostname.
-S display SNAT connections
-D display DNAT connections
-L display only connections to NAT box self (disables display of SNAT & DNAT)
-x extended view of hostnames
-r src | dst | src-port | dst-port | state sort connections
-o strip output-header
Enhancements:
- This release contains a fix for read-in (ip_conntrack).
- Previous versions could sometimes hang or segfault on some systems.
- There is a fix for displaying DNAT over SNAT connections.

ntop is a network traffic probe that shows the network usage, similar to what the popular top Unix command does.
The project is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform and on Win32 as well.
ntop users can use a a web browser (e.g. netscape) to navigate through ntop (that acts as a web server) traffic information and get a dump of the network status.
In the latter case, ntop can be seen as a simple RMON-like agent with an embedded web interface. The use of:
a web interface
limited configuration and administration via the web interface
reduced CPU and memory usage (they vary according to network size and traffic)
make ntop easy to use and suitable for monitoring various kind of networks.
Main features:
- Sort network traffic according to many protocols
- Show network traffic sorted according to various criteria
- Display traffic statistics
- Store on disk persistent traffic statistics in RRD format
- Identify the indentity (e.g. email address) of computer users
- Passively (i.e. withou sending probe packets) identify the host OS
- Show IP traffic distribution among the various protocols
- Analyse IP traffic and sort it according to the source/destination
- Display IP Traffic Subnet matrix (whos talking to who?)
- Report IP protocol usage sorted by protocol type
- Act as a NetFlow/sFlow collector for flows generated by routers (e.g. Cisco and Juniper) or switches (e.g. Foundry Networks)
- Produce RMON-like network traffic statistics
Additional features of "ntop":
- Network Flows
- Local Traffic Analysis
- Multithread and MP (MultiProcessor) support on both Unix and Win32
- Perl/PHP/Python lightweight API for accessing ntop from remote
- Support of both NetFlow andsFlow as flow collector. ntop can collect simultaneously from multiple probes.
- Traffic statistics are saved into RRD databases for long-run traffic analysis.
- Internet Domain, AS (Autonomous Systems), VLAN (Virtual LAN) Statistics
- Network assets discovery and categorization according to their OS and users
- Protocol decoders for most of known P2P (Peer to Peer) protocols
- Advanced per user HTTP password protection with encrypted passwords
- RRD support for persistently storing per-host traffic information
- Passive remote host fingerprint (Courtesy of ettercap)
- HTTPS (Secure HTTP via OpenSSL)
- Virtual/multiple network interfaces support
- Graphical Charts (via gdchart)
- WAP support

mod_limitipconn is an Apache module which allows web server administrators to limit the number of simultaneous downloads permitted from a single IP address.

SIAR (Simple IP Account Reporter) is a plug-in for pmacct (Promiscuous Mode IP Accounting Package) for creating specific reports of traffic on a LAN.

SIAR plugin creates an overview of the total of traffic that passed through the interface, a top protocol table, a top listener table, a top talkers table, a total situation table, seek for an IP source, seek for an IP destination, seek for both, a top conversation table and a graph for a specific day

Installation:

After you have download the file, you have to decompress it in the web-server folder. I suggest to decompress it in /var/www/, infact if you decompress it in an another you will have problems with the code.

cd /var/www/
tar xfz < name >-x-y-z.tar.gz
cd < name >-x-y-z.tar.gz

The tool is now installed. Read the CONFIG file for the configuration.

NTTLScan provides a network topology scanner.

Nttlscan is a quick network topology scanner, and it functions as a highly parallel traceroute. It randomly picks destination IP addresses and sends TCP or UDP probes.

Returning ICMP messages are interpreted to reconstruct the route that packets take to their respective destination. Nttlscan can be used to construct virtual routing topologies for Honeyd.

Very restrictive set of firewall rules script is a sample firewall for ip_tables, the tool for doing firewalling and masquerading under the 2.3.x/2.4.x series of kernels.

Be warned, this is a very restrictive set of firewall rules (and they should be, for proper security). Anything that you do not _specifically_ allow is logged and dropped into /dev/null, so if youre wondering why something isnt working, check /var/log/messages.

This is about as close as you get to a secure firewall. Its nasty, its harsh, and it will make your machine nearly invisible to the rest of the internet world. Have fun.

To run this script you must chmod 700 iptables-script and then execute it. To stop it from running, run iptables -F

Sample:

#Point this to your copy of ip_tables
IPT="/usr/local/bin/iptables"

#Load the module.
modprobe ip_tables

#Flush old rules, delete the firewall chain if it exists
$IPT -F
$IPT -F -t nat
$IPT -X firewall

#Setup Masquerading. Change the IP to your internal network and uncomment
#this in order to enable it.
#$IPT -A POSTROUTING -t nat -s 192.168.1.0/24 -j MASQUERADE
#$IPT -P FORWARD ACCEPT
#echo 1 > /proc/sys/net/ipv4/ip_forward

#Set up the firewall chain
$IPT -N firewall
$IPT -A firewall -j LOG --log-level info --log-prefix "Firewall:"
$IPT -A firewall -j DROP

#Accept ourselves
$IPT -A INPUT -s 127.0.0.1/32 -d 127.0.0.1/32 -j ACCEPT
#If youre using IP Masquerading, change this IP to whatever your internl
#IP addres is and uncomment it
#$IPT -A INPUT -s 192.168.1.1/32 -d 0/0 -j ACCEPT

#Accept DNS, cause its warm and friendly
$IPT -A INPUT -p udp --source-port 53 -j ACCEPT
$IPT -A INPUT -p tcp --source-port 113 -j ACCEPT
$IPT -A INPUT -p tcp --destination-port 113 -j ACCEPT

#Allow ftp to send data back and forth.
$IPT -A INPUT -p tcp ! --syn --source-port 20 --destination-port 1024:65535 -j ACCEPT

#Accept SSH. Duh.
#$IPT -A INPUT -p tcp --destination-port 22 -j ACCEPT

#Send everything else ot the firewall.
$IPT -A INPUT -p icmp -j firewall
$IPT -A INPUT -p tcp --syn -j firewall
$IPT -A INPUT -p udp -j firewall

NetCARD Config project helps linux users to configure network cards for two ip one for DSL network one for Local Network.