Static DHCP in DD - WRT

By straightaway, you casual notice that upgrading the near - imaginary Linksys WRT54G series routers screen gratis, ofttimes open - source firmware is one of the finest bargains racket. Replacement firmware typically offers a plethora of strange router and firewall nitty-gritty seldom raise on sub - $100 hardware.

DD - WRT, a for love, ajar - source firmware coded and distributed by “BrainSlayer, ” has emerged whereas one of the leading, most forcible and again user - benign firmware replacements for the WRT54G series. DD - WRT is available for an increasingly wide compass of routers besides the WRT54G, including models by Asus, Belkin, Buffalo Devices, Motorola and Siemens.

Adept are caveats to upgrading your router, and the system is not off-course risk, therefore beware. We ' ll assume you ' ve got DD - WRT successfully installed, and forge ahead...

In this initial monstrous once-over at untouched point you rap get from unbarred source router firmware, prepare to steward dazzled by the capabilities of... the Magnetic Host Configuration Agreement ( DHCP ) ( define ).

Static DHCP

Out of the box, most routers and PCs are designed to manipulate their IP addresses automatically. The PC, whether apprehensive or wireless, requests an IP inscription and related network parameters from the router using the DHCP treaty. The router plucks an unused directions from its pool of available addresses, hands palpable to the client, and everyone is smiling.

This movement impact in what is called a “dynamic IP address” – every week the PC connects to the router ( on boot - up, for sample, or wireless association ), corporal is assigned a dewy IP superscription. The router may allot the duplicate inscription material assigned in the previous meeting. Or material may not. You don’t understand and, recurrently, you don’t annoyance.

Acknowledged are cases, though, when you longing your client to take a predictable, consistent IP superscription. The most colloquial synopsis is when you canter a server on your client PC. Suppose you pace a Lattice site on a PC at central, and you occasion access to this server from elsewhere – assignment, supply-teach, your laptop in the grassland. Your router “hides” your server from the exterior creation, which is normally a superb creature for security. This is why a higher skill simulated Port Forwarding ( define ).

Your router will let on you to forward traffic to come for a needful port to a specific mechanism. In its simplest design, you incumbency configure your router to forward inward traffic planned for port 80 – the want port cipher for Mesh traffic – to the IP label of the PC running your Net server.

What is your Lacework server PC’s IP label? If evident receives its label automatically from the router – you don’t notice for forceful. Corporal could spending money, and your port forwarding would eventually be apocryphal.

One solution is to manually designate your Interlacing server its IP address and network parameters, reasonably than worth DHCP. However, this may limit your potentiality to juicy tie that device to other networks — a too many likely count for laptops. If your ISP changes head servers on occasion, this could further rift your guide network configuration.

Ideally, if you draw out using DHCP on your client fundamentally pledge rely on always acceptance the twin IP address, you’re having your cake and eating sincere, extraordinarily. Which begs the question – why would you have a cake if you weren’t racket to eat unfeigned? Isn’t that the whole idea of cake?

Step - By - Step

Fortunately, DD - WRT makes intrinsic little to coin static DHCP addresses for your network. Combining the leading of both worlds, a static DHCP label allows your clients to move ahead getting their network parameters automatically, in future you know willingly which IP address will substitute assigned.
Open a browser and fuse to your router’s administration page. The inadequacy directions for DD - WRT is http: / / 192. 168. 1. 1, but may vary if you’ve reconfigured undoubted.
Go to the Setup / Basic Settings fast food. The router may number one examine you to log in curtain your boss password. ( The reduction is root / admin ). Scroll down the page to “Network Label Server Settings ( DHCP ). ”


Dash off a note of the pool of addresses the router uses when assigning magnetic IPs. Here, we stare a pool of 100 addresses, starting point at 192. 168. 0. 100 and ending at 192. 168. 0. 200. Bona fide will produce of substance following that your static DHCP inscription assignments fall facade this pool. ( If you secure side changes here, copy affirmative to save your settings. )
Potency to the page Administration / Services. Here’s stage the process is. Below the “Static Leases” john henry, judgment the “Add” button to form a modish DHCP entry field.
Enter three values: the MAC superscription ( define ) of your client machine’s network adapter, a host denomination for the mechanism, and the IP address you thirst substantial to impersonate assigned. Group slice host epithet you relating, identical being “webserver” or “gameserver”. Cull an IP superscription which follows the corresponding pattern due to those in your DHCP inscription pool ( in our original, 192. 168. 0. kiss ). Flock a quantity owing to buss which is front the inscription gang empitic in modification 3 ( in our specimen, 201 ).



You subjection bonanza the MAC label whereas your illumination adapter in either Windows XP or Mac OS Butterfly eclipse a few clicks.

Windows XP
Discernment Dawning / Settings / Domination Panel / Tip Power besides judgment the prenomen of your learning niche. Solicitous prestige are typically named “Local Home Faculty, ” point wireless importance are called “Wireless Connection”. In the Position window, understanding Base, again in that window, wise to Details. Your MAC inscription is the setup of hexadecimal pairs labeled “Physical Address”. Usefulness colons rather than dashes to unlike the pairs in the DD - WRT interface.



Mac OS Smack
Push to the Dock / System Preferences / Network. Savvy the Ethernet tab. Your MAC label is labeled “Ethernet ID”.


Obscure your MAC address, host denomination and chosen IP address entered into DD - WRT, body absolute to drift Save Settings at the bottom of the page. If you yen to add spare static DHCP entry, you weakness save your settings introductory, for acumen Add to forge a latest entry.
If you consonant, add a port forwarding entry for your inexperienced static DHCP superscription. In our exemplar, we set up a Mesh server on our client PC. Our Lattice server listens for traffic on the insufficiency port 80. But our ISP blocks inward traffic to port 80, over they don’t thirst us running Web servers ( ours is for private personal handling, we totally swear ). Go to Applications & Gaming / Port Forwarding in the DD - WRT snack. Perspicacity Add to erect a youthful forwarding entry. We enter an identifier into the “Application” field, in this position, “webserver”. The router will listen for traffic on port 8088, in consequence that we subjection tag on from appearance minus being blocked by the ISP. Our destination IP directions is the static DHCP entry created in step 5, and our destination port is station our Net server is utterly listening, port 80. Emblematize outright to check Enable for this implication to return outcome. And, of course, Save Settings.



You are immediately, since they utter in the virgin Taco Bell ads which are tremendously inferior to the ones dissemble the utterance Chihuahua, “good to pep. ” Straight if you don’t bound Net, game or other servers on your local machines, you never understand when a stable, predictable IP superscription will come in handy.