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Overcoming Internal IP Conflicts With Linux Firewall Solutions

Apr 10, 2000 •

Anthony Pell

1 min read

Topics Covered

firewall management network conflicts address translation internal networking IP addressing

Many companies - and certainly those who we work with - have an historical problem lurking in the wings. When they first developed and deployed their internal networks, they chose IP addressing schemes that conflict with those assigned to machines . . . Many companies - and certainly those who we work with - have an historical problem lurking in the wings. When they first developed and deployed their internal networks, they chose IP addressing schemes that conflict with those assigned to machines connected to the Internet. To use the common term, they are using "illegal" network addresses. This is not usually a problem until there is a need to connect to the Internet - when it becomes a severe nuisance. Amongst the practical problems caused are the need for address translation or a proxy on the firewall. Unfortunately this is not enough by itself.

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