Tumblelog by Soup.io
Newer posts are loading.
You are at the newest post.
Click here to check if anything new just came in.

September 21 2010

GestióIP - IP network and IP address management (IPAM) software

GestióIP is an automated, Web based IP network and IP address management (IPAM) software. It's designed to quickly find the information that administrators frequently need. GestióIP features powerfull search and filter functions for both networks and host, which are accessible form every page. This lets you find information easily and quickly.

June 09 2010

Understanding TCP Sequence and Acknowledgment Numbers - Packet Life

If you're reading this, odds are that you're already familiar with TCP's infamous "three-way handshake," or "SYN, SYN/ACK, ACK." Unfortunately, that's where TCP education ends for many networkers. Despite its age, TCP is a relatively complex protocol and well worth knowing intimately. This article aims to help you become more comfortable examining TCP sequence and acknowledgment numbers in the Wireshark packet analyzer.

Before we start, be sure to open the example capture in Wireshark and play along.

The example capture contains a single HTTP request to a web server, in which the client web browser requests a single image image file, and the server returns an HTTP/1.1 200 (OK) response which includes the file requested. You can right-click on any of the TCP packets within this capture and select Follow TCP Stream to open the raw contents of the TCP stream in a separate window for inspection. Traffic from the client is shown in red, and traffic from the server in blue.
Tags: ip tcp wireshark

January 17 2010

August 24 2009

The BIRD Internet Routing Daemon Project

The BIRD project aims to develop a fully functional dynamic IP routing daemon primarily targetted on (but not limited to) UNIX-like systems and distributed under the GNU General Public License. 24.08.2009 - New release 1.1.2! Important core bug fixed - BIRD used as route server in LoNAP and NIX.CZ. What do we support: * Both IPv4 and IPv6 (use --enable-ipv6 when configuring) * Multiple routing tables * BGP * RIP * OSPF (IPv4 only) * Static routes * Inter-table protocol * Command-line interface (using the `birdc' client; to get some help, just press `?') * Soft reconfiguration -- no online commands for changing the configuration in very limited ways, just edit the configuration file and issue a `configure' command or send SIGHUP and BIRD will start using the new configuration, possibly restarting protocols affected by the configuration changes * Powerful language for route filtering

August 22 2009

ICMPTX (IP-over-ICMP) HOWTO

You're sitting in an airport or in a cafe, and people want your money for Internet access. They do allow ICMP traffic, though (i.e., you can ping machines on the Internet). Enters ICMPTX. (If you can't use ping, but you can issue name queries, use NSTX: IP-over-DNS.) There are several resources online to point you in the right direction, most notably Case of a wireless hack by Siim Põder. There is a similar, thoroughly undocument program called itun, a simple icmp tunnel that claims to do the same thing. Also, check out PingTunnel which is not IP-over-ICMP, but rather TCP-over-ICMP and, therefore, less useful. Once you've followed these instructions, you basically have a remote proxy, providing you with access to the Internet. Communication between you and the remote proxy is over ICMP. Note that these instructions play nicely with NSTX. You can run both on one proxy.
Older posts are this way If this message doesn't go away, click anywhere on the page to continue loading posts.
Could not load more posts
Maybe Soup is currently being updated? I'll try again automatically in a few seconds...
Just a second, loading more posts...
You've reached the end.

Don't be the product, buy the product!

Schweinderl