
	VPN Design


	Home > Ask the Networking Experts > Routing and switching with Sudhanshu Gupta Questions & Answers > How do I connect my VLANs to the Internet using NAT and the appropriately configured ACL?

Ask The Networking Expert: Questions & Answers

EMAIL THIS

How do I connect my VLANs to the Internet using NAT and the appropriately configured ACL?

EXPERT RESPONSE FROM: Sudhanshu Gupta

		Pose a Question

		Other Networking Categories

		Meet all Networking Experts
		Become an Expert for this site

Digg This!

StumbleUpon

Del.icio.us

QUESTION POSED ON: 04 May 2007
I have been using private addressing on my VLANS. Now I need to have them connect to the Internet over the router with sub-interfaces already defined. I know that I need NAT, and I know I need to configure the appropriate ACL, but I don't know how. I have tried several ACL combinations but to no success.
From your reply to some other question close to this, you said static route entries have to be provided with the Internet interface IP specified as outgoing address. But I already have all the interfaces as static (directly connected) routes. I'm confused.

EXPERT RESPONSE

Hi Ted,

For all your IPs which are inside your network you can use dynamic NAT, but if you have some servers that need to be accessed from outside, they need to carry a static NAT.

The statement you have mentioned talks about creating a static route pointing towards outside a network so that traffic can go outside. This statement is not related to NAT.

Hope this clarifies.

Sound Off! -

Digg This!

StumbleUpon

Del.icio.us

RELATED CONTENT

	Routing and switching with Sudhanshu Gupta
	Does each routing protocol have a different routing table?
	How can I load balance between DSLs and LLs?
	How to route L3 switches for a serial LAN design
	How to configure ISDN and backup leases on routers
	How can I configure 10 VLANs with 5 unmanaged switches?
	Types of link-state advertisements (LSAs) used in Open Shortest Path First (OSPF)
	What is broadcasting and which switch will fix timed-out requests?
	Can routers be configured to send files to appropriate servers?
	How do I configure two leased lines in one router?
	How can I check connectivity and ping between sites?

VPN Design

Creating Remote Access and Site-to-Site VPNs with ISA Firewalls: from 'The Best Damn Firewall Book Period, Second Edition'

A basic virtualized enterprise -- from 'Network Virtualization'

How can I get our VPN to work on Windows Vista?

To set up a VPN server, do you need two NIC cards?

MPLS technology overview

What equipment do I use to connect two LANs in different cities? What are the steps?

Are there any architectures of IPsec VPN apart from lookaside and flow-through?

How can I access each device from my network while keeping the companies' networks secure?

VPN operating system interoperability -- Configure VPNs with Linux

SSL VPN keeps news breaking on multiple platforms

VPN Design Research

Network Routing Protocols

Does each routing protocol have a different routing table?

How can I load balance between DSLs and LLs?

How to configure ISDN and backup leases on routers

Types of link-state advertisements (LSAs) used in Open Shortest Path First (OSPF)

How do I configure two leased lines in one router?

Why IPv4 and IPv6 don't do fragment reassembly in routers

What is the difference between a GRE tunnel and IPsec tunnel?

How can I check connectivity and ping between sites?

How does asynchronous transfer mode differ from existing network technologies?

Routing with NAT traversal and UPnP

Network Routing Protocols Research

RELATED GLOSSARY TERMS

Terms from Whatis.com − the technology online dictionary

extranet (SearchNetworking.com)

Layer Two Tunneling Protocol (SearchNetworking.com)

virtual private LAN service (SearchNetworking.com)

RELATED RESOURCES

2020software.com, trial software downloads for accounting software, ERP software, CRM software and business software systems

Search Bitpipe.com for the latest white papers and business webcasts

Whatis.com, the online computer dictionary

Search and Browse the Expert Answer Center
Search and browse more than 25,000 question and answer pairs from more than 250 TechTarget industry experts.

Browse our Expert Advice
Operating Systems IT Management Networking Database	Security Servers and Storage Applications and Development Career Center

SEARCH

TechTarget provides enterprise IT professionals with the information they need to perform their jobs - from developing strategy, to making cost-effective IT purchase decisions and managing their organizations' IT projects - with its network of technology-specific Web sites, events and magazines.


TechTarget Corporate Web Site \| Media Kits \| Reprints \| Site Map All Rights Reserved, Copyright 2000 - 2008, TechTarget \| Read our Privacy Policy