IP packet forwarding is the process of routing packets between network interfaces on one system. A packet arriving on one network interface and addressed to a host on a different network is forwarded to the appropriate interface. While this is a job for the network router, Servers with multiple interfaces connected to different network can perform this action as well. This behaviour as a router is a default in Sun Solaris Operating Systems.
Category: Networking
Kiwi CatTools – Backup and manage your network devices
Kiwi CatTools automates configuration backups and management on routers, switches and firewalls. It provides e-mail notification and compare reports highlighting config changes. Supports Telnet, SSH, TFTP and SNMP.
CoovaAP – Turn your Wireless Router into a hotspot
CoovaAP is an OpenWRT-based firmware designed especially for HotSpots. It comes with the CoovaChilli access controller built-in and makes it easily configurable. CoovaAP is perfect for just about any HotSpot application – from WPA Enterprise (with RADIUS accounting) to Free WiFi with Terms of Service acknowledgment to commercial HotSpot captive portal applications. Use the embedded captive portal for a simple self contained HotSpot or use your own captive portal and RADIUS back-end.
Nipper – Network device Security Audit tool
Nipper is an Opensource tool for network device congiguration and security audit. Nipper performs security audits of network device configuration files. The report produced by Nipper includes; detailed security-related issues with recommendations, a configuration report and various appendices. (more…)
Speed and Duplex issues when connecting to Cisco switches
Speed determination issues can result in no connectivity. However, issues with autonegotiation of duplex generally do not result in link establishment issues. Instead, autonegotiation issues mainly result in performance-related issues. The most common problems with NIC issues deal with speed and duplex configuration. (more…)
TCP/IP Filtering in Windows
Windows XP Professional, Windows 2003 and Windows 2000 supports TCP/IP filtering. TCP/IP filtering allows you to specify exactly which types of incoming IP traffic are processed as the destination for each IP interface. This feature is designed to isolate the traffic being processed by Internet and intranet clients in the absence of other TCP/IP filtering provided by IPSec, the Routing and Remote Access service, or other TCP/IP applications or services. TCP/IP filtering is disabled by default. (more…)
winsockfix – a great tcp/ip connection fixer for Windows3
In my years of experience, if I have to put a list of great tools for troubleshooting, winsockfix will certainly be one of those right at the top of it. Winsocfix fixes the winsock settings on your Windows XP machine. It can often cure the problem of lost connections after the removal of Adware components or improper uninstall of firewall applications or other tools that modify the XP network and Winsock settings. (more…)