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- Preserve NAT translations when a Cisco router fails
- When you have two routers running HSRP, the standby router takes over if the active router goes down. But if this happens when you're using NAT, it severs all connections going through the active router. David Davis tells you how to use HSRP and SNAT to preserve these NAT translations....
- Technical articles 2006-04-27
- Use iptables to implement safe network address translation
- This tutorial shows how to configure NAT using iptables on a Linux system.Network address translation NAT has become a band-aid for the global shortage of IP addresses under IPv4. A permanent, proper solution, IPv6, is forthcoming; in the meantime, NAT will allow the Internet to grow while preventing us from...
- Technical articles 2002-05-30
- Utilizing the advanced firewall techniques in iptables
- The clear successor to the Linux firewall crown is iptables. See what features the netfilter/iptables package includes that can make your firewall more secure, provide better network performance, and improve logging.The netfilter/iptables firewall software for Linux includes advanced firewall features such as NAT, rate limiting, connection tracking, and packet mangling....
- Technical articles 2002-04-08
Additional Resources
- configure NAT on linux Routers in network
- hello,I set a 4 computer LAN with configuration as HostAeth0=> 192.168.1.100Router1eth0=>10.1.1.1eth1=>192.168.1.1Router2eth0=>10.1.1.100eth1=>172.16.1.1HostBeth0=>172.16.1.100I have already "echo 1 > /proc/sys/net/ipv4/ip_forward" performed on both machines.From HostA(192.168.1.100) I am pinging HostB (172.16.1.100).What i want Among Set 3 Networks whenever packet generated for HostB(172.16.1.100) At HostA(192.168.1.100) Router1 has to SNAT for Outgoing Packet from 192.168.1.100 to...
- Q&A 2005-05-10
- SolutionBase: Set up a Linux proxy server with ease using Webmin
- This article is also available as a TechRepublic download.A proxy server is one of those ubiquitous servers that canoffer up a number of possible services. But until the likes of Webmin arrived,setting up a proxy server in Linux was a daunting task, with configurationfiles filled with parent and sibling nodes...
- Technical articles 2007-05-15
- Trivial File Transfer Protocol Problems
- I am having difficulty with accessing tftp from a cable modem. The cable modem needs to access the tftp service in order to download it configuration to get its ranges. Now, the modem is in one ip address class lets say 192.168.30.0 a subnet of 255.255.0.0. The server on the...
- Q&A 2005-05-28
- Outlook with Squid transparent Proxy
- Dear AllI have squid proxy server running in my office, my users are able to access internet through thier browser which is pointing to squid, but my outlook users are not able to send / receive mail. Configured proxy as transparent proxy mode and also have iptables script ...
- Discussion threads 2007-09-16
- Troubleshoot network problems with tcpdump on Linux
- See how to use tcpdump to listen to and record traffic on a network segment and then analyze it.Tcpdump is a network utility that listens to and records traffic on a network segment. This can be highly useful in troubleshooting and monitoring network activity. When preliminary troubleshooting does not solve a...
- Technical articles 2002-02-25
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