From Lundman Wiki
Revision as of 09:48, 23 October 2007 by Lundman (talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search


Layer-4 Health Check Daemon for IP Filter.

* Define as many clusters, with as many members as you need.
* Automatically adds and removes "ipnat" rules as needed.
* Flexible health check support, tcp-open, tcp-close, udp-open, udp-close, system.
* Simple scripting available for health checks in send/expect syntax with fnmatch pattern comparison
* Binary protocol supported in url-encoding style syntax (eg %0D)
* system() like execution of external commands available. (spawn your own health-check testers)
* Reload and restart leaving last-known-state available for less service impact.
* SSL supported for TCP testers.
* Optional IPF rules to sense RST return-packets for faster failure detection.
* autoconf support added.

L4IP can use either direct ioctl, or system() style calls to the executable "ipnat". This first method is more efficient, but is very unportable. The second method should work on nearly all platforms and version of IP Filter that supports round-robin.

Available in CVS under "l4ip"

Earlier (latest stable) tarball is available here:


CVS Commitlog

Example configuration

Screen shot

eversearch airline tickets eversearch continental airline eversearch airline reservation eversearch discount airline tickets eversearch air travel discount eversearch air travel fare eversearch air travel eversearch business debt eversearch consolidate debt eversearch credit card debt eversearch debt collection eversearch debt collector eversearch debt consolidation eversearch debt counseling eversearch debt help eversearch debt management eversearch debt problem eversearch debt reduction eversearch debt relief eversearch debt settlement eversearch debt solution eversearch eliminate credit card debt eversearch online debt eversearch auto insurance eversearch auto insurance quote eversearch automobil insurance eversearch business insurance eversearch car insurance eversearch health insurance eversearch home insurance eversearch insurance leads eversearch life insurance eversearch medical insurance eversearch state farm life insurance eversearch term life insurance eversearch travel insurance eversearch whole life insurance eversearch dental insurance eversearch advance cash loan eversearch auto loan calculator eversearch auto refinance loan eversearch bad credit auto loan eversearch bad credit loan eversearch best home equity eversearch business loan eversearch cash loan eversearch debt consolidation loan eversearch fast cash loan eversearch home equity loan eversearch home improvement loan eversearch loan consolidation eversearch loan with bad credit eversearch mortgage loan eversearch no credit check loan eversearch payday loan eversearch personal loan eversearch student loan consolidation eversearch unsecured loan eversearch 2nd mortgage eversearch bad credit mortgage eversearch best mortgage rate eversearch california mortgage eversearch commercial mortgage eversearch florida mortgage eversearch home mortgage eversearch mortgage calculator eversearch mortgage lead eversearch mortgage loan eversearch mortgage quote eversearch nationwide mortgage eversearch refinance mortgage eversearch second mortgage eversearch bedroom furniture eversearch discount furniture eversearch furniture store eversearch office furniture eversearch patio furniture eversearch outdoor furniture eversearch garden furniture eversearch kitchen furniture eversearch computer furniture eversearch antique furniture eversearch furniture modern eversearch contemporary furniture eversearch liposuction

wholesale jewelry at: wholesale jewelry wholesale clothing at: wholesale clothing wholesale shoes at: wholesale shoes wholesale furniture at: wholesale furniture wholesale lingerie at: wholesale lingerie air travel fare at: air travel fare auto refinance loan at: auto refinance loan best home equity at: best home equity debt collector at: debt collector debt problem at: debt problem eliminate credit card debt at: eliminate credit card debt leather sofa at: leather sofa modern sofa at: modern sofa nationwide mortgage at: nationwide mortgage online debt at: online debt sofa express at: sofa express state farm life insurance at: state farm life insurance 2nd mortgage at: 2nd mortgage advance cash loan at: advance cash loan air mattress at: air mattress air travel at: air travel air travel discount at: air travel discount airline reservation at: airline reservation airline tickets at: airline tickets antique furniture at: antique furniture auto insurance at: auto insurance auto insurance quote at: auto insurance quote auto loan calculator at: auto loan calculator automobil insurance at: automobil insurance baby furniture at: baby furniture bad credit auto loan at: bad credit auto loan bad credit loan at: bad credit loan bad credit mortgage at: bad credit mortgage bedroom furniture at: bedroom furniture best mortgage rate at: best mortgage rate business debt at: business debt california mortgage at: california mortgage car insurance at: car insurance commercial mortgage at: commercial mortgage computer furniture at: computer furniture consolidate debt at: consolidate debt contemporary furniture at: contemporary furniture continental airline at: continental airline credit card debt at: credit card debt debt collection at: debt collection debt consolidation at: debt consolidation debt consolidation loan at: debt consolidation loan debt counseling at: debt counseling debt help at: debt help debt management at: debt management debt reduction at: debt reduction debt relief at: debt relief debt settlement at: debt settlement debt solution at: debt solution dental insurance at: dental insurance discount airline tickets at: discount airline tickets discount furniture at: discount furniture discount mattress at: discount mattress electric heater at: electric heater fast cash loan at: fast cash loan florida mortgage at: florida mortgage furniture collections at: furniture collections furniture home at: furniture home furniture kid at: furniture kid furniture modern at: furniture modern furniture store at: furniture store garden furniture at: garden furniture gas heater at: gas heater health insurance at: health insurance home equity loan at: home equity loan home improvement loan at: home improvement loan home insurance at: home insurance home mortgage at: home mortgage insurance leads at: insurance leads kerosene heater at: kerosene heater kitchen furniture at: kitchen furniture life insurance at: life insurance loan consolidation at: loan consolidation loan with bad credit at: loan with bad credit medical insurance at: medical insurance mortgage calculator at: mortgage calculator mortgage lead at: mortgage lead mortgage loan at: mortgage loan mortgage quote at: mortgage quote office furniture at: office furniture outdoor furniture at: outdoor furniture patio furniture at: patio furniture patio heater at: patio heater portable heater at: portable heater propane heater at: propane heater refinance mortgage at: refinance mortgage second mortgage at: second mortgage sectional sofa at: sectional sofa sleeper sofa at: sleeper sofa sofa bed at: sofa bed space heaters at: space heaters term life insurance at: term life insurance travel insurance at: travel insurance unsecured loan at: unsecured loan water heater at: water heater wheel chair at: wheel chair whole life insurance at: whole life insurance business insurance at: business insurance business loan at: business loan cash loan at: cash loan base business home at: base business home business home opportunity at: business home opportunity business home internet at: business home internet business home idea at: business home idea business home work at: business home work business home online at: business home online best business home at: best business home business home start at: business home start business home small at: business home small business computer home at: business computer home fruits basket at: fruits basket visa credit card at: visa credit card starting a business at: starting a business small business at: small business job opportunity at: job opportunity investment opportunity at: investment opportunity internet business at: internet business home based business at: home based business franchise sale at: franchise sale franchise opportunity at: franchise opportunity employment opportunity at: employment opportunity career opportunity at: career opportunity business travel at: business travel business to business at: business to business business software at: business software business services at: business services business school at: business school business resource at: business resource business plan at: business plan business opportunity at: business opportunity business franchise at: business franchise business for sale at: business for sale business degree at: business degree business credit card at: business credit card business check at: business check business card at: business card business and economy at: business and economy better business bureau at: better business bureau housing market at: housing market corporate housing at: corporate housing senior housing at: senior housing affordable housing at: affordable housing rental housing at: rental housing temporary housing at: temporary housing housing prices at: housing prices affordable dentures at: affordable dentures affordable apartment at: affordable apartment stock trading at: stock trading stock market at: stock market stock quote at: stock quote trade stock at: trade stock stock broker at: stock broker buy stock at: buy stock stock exchange at: stock exchange stock investment at: stock investment alternative bankruptcy at: alternative bankruptcy attorney legal services at: attorney legal services avoid bankruptcy at: avoid bankruptcy bankruptcy services at: bankruptcy services dwi attorney at: dwi attorney attorney injury personal at: attorney injury personal banking investment at: banking investment bankruptcy attorney at: bankruptcy attorney bankruptcy card credit at: bankruptcy card credit bankruptcy filing at: bankruptcy filing bankruptcy law at: bankruptcy law bankruptcy loan at: bankruptcy loan bankruptcy personal at: bankruptcy personal credit equity home line at: credit equity home line estate investment real at: estate investment real fidelity investment at: fidelity investment finance investment at: finance investment investment online at: investment online investment property at: investment property personal injury attorney at: personal injury attorney arizona home new at: arizona home new arizona lottery at: arizona lottery atlanta georgia real estate at: atlanta georgia real estate colorado home loan at: colorado home loan colorado lottery at: colorado lottery connecticut lottery at: connecticut lottery hawaii car rental at: hawaii car rental hawaii mortgage at: hawaii mortgage indiana mortgage at: indiana mortgage iowa attorney at: iowa attorney iowa travel at: iowa travel lottery maryland at: lottery maryland airline alaska at: airline alaska alabama lawyer at: alabama lawyer alabama real estate at: alabama real estate alaska cruise at: alaska cruise alaska estate real at: alaska estate real alaska travel at: alaska travel alaska vacation at: alaska vacation arizona estate real at: arizona estate real arizona mortgage at: arizona mortgage arkansas real estate at: arkansas real estate california car insurance at: california car insurance california lottery at: california lottery california mortgage loan at: california mortgage loan california real estate at: california real estate casino louisiana at: casino louisiana colorado college at: colorado college colorado real estate at: colorado real estate colorado vacation at: colorado vacation connecticut college at: connecticut college connecticut real estate at: connecticut real estate delaware estate real at: delaware estate real estate maine real at: estate maine real estate maryland real at: estate maryland real florida lottery at: florida lottery florida mortgage at: florida mortgage florida real estate at: florida real estate florida travel at: florida travel florida vacation at: florida vacation hawaii cruise at: hawaii cruise hawaii hotel at: hawaii hotel hawaii real estate at: hawaii real estate hawaii travel at: hawaii travel hawaii vacation at: hawaii vacation hotel california at: hotel california idaho real estate at: idaho real estate illinois real estate at: illinois real estate indiana casino at: indiana casino indiana real estate at: indiana real estate iowa real estate at: iowa real estate kansas real estate at: kansas real estate kentucky real estate at: kentucky real estate louisiana real estate at: louisiana real estate maryland mortgage at: maryland mortgage massachusetts real estate at: massachusetts real estate italian airline at: italian airline italian charm bracelet at: italian charm bracelet italian charm wholesale at: italian charm wholesale italian charm at: italian charm italian consulate at: italian consulate italian food at: italian food italian furniture at: italian furniture italian gift at: italian gift italian greyhound at: italian greyhound italian jewelry at: italian jewelry italian leather at: italian leather italian pottery at: italian pottery italian recipes at: italian recipes italian restaurant at: italian restaurant italian shoes at: italian shoes italian villa rental at: italian villa rental italian wine at: italian wine michigan lottery at: michigan lottery university of michigan at: university of michigan michigan wolverines at: michigan wolverines michigan real estate at: michigan real estate michigan lawyer at: michigan lawyer lodging in michigan at: lodging in michigan minnesota real estate at: minnesota real estate minnesota lawyer at: minnesota lawyer minnesota jobs at: minnesota jobs minnesota business at: minnesota business minnesota new home at: minnesota new home mississippi real estate at: mississippi real estate mississippi college at: mississippi college mississippi casino at: mississippi casino missouri mortgage at: missouri mortgage estate missouri real at: estate missouri real estate montana real at: estate montana real furniture mart nebraska at: furniture mart nebraska nebraska university at: nebraska university estate nebraska real at: estate nebraska real furniture nebraska at: furniture nebraska mortgage nebraska at: mortgage nebraska reno nevada real estate at: reno nevada real estate nevada real estate at: nevada real estate nevada mortgage at: nevada mortgage nevada mortgage loan at: nevada mortgage loan nevada hotel at: nevada hotel nevada home at: nevada home new hampshire real estate at: new hampshire real estate university of new hampshire at: university of new hampshire new hampshire lodging at: new hampshire lodging new jersey lottery at: new jersey lottery new jersey real estate at: new jersey real estate new jersey attorney at: new jersey attorney new jersey hotel at: new jersey hotel estate mexico new real at: estate mexico new real new mexico travel at: new mexico travel new york hotel at: new york hotel real estate new york at: real estate new york north carolina real estate at: north carolina real estate north carolina mortgage at: north carolina mortgage north dakota real estate at: north dakota real estate north dakota mortgage at: north dakota mortgage lottery ohio at: lottery ohio estate ohio real at: estate ohio real new home ohio at: new home ohio oklahoma real estate at: oklahoma real estate oregon real estate at: oregon real estate university of oregon at: university of oregon estate pennsylvania real at: estate pennsylvania real hotel pennsylvania at: hotel pennsylvania attorney pennsylvania at: attorney pennsylvania pennsylvania travel at: pennsylvania travel rhode island college at: rhode island college rhode island mortgage at: rhode island mortgage island rhode travel at: island rhode travel south carolina real estate at: south carolina real estate south carolina mortgage loan at: south carolina mortgage loan south carolina attorney at: south carolina attorney dakota mortgage south at: dakota mortgage south dakota south travel at: dakota south travel tennessee real estate at: tennessee real estate tennessee travel at: tennessee travel texas holdem at: texas holdem texas real estate at: texas real estate new home texas at: new home texas utah real estate at: utah real estate utah jobs at: utah jobs utah home at: utah home utah home for sale at: utah home for sale utah mortgage at: utah mortgage vermont real estate at: vermont real estate vermont travel at: vermont travel vermont vacation at: vermont vacation vermont hotel at: vermont hotel virginia real estate at: virginia real estate virginia beach hotel at: virginia beach hotel virginia travel at: virginia travel hotel washington at: hotel washington washington real estate at: washington real estate wisconsin real estate at: wisconsin real estate wisconsin jobs at: wisconsin jobs wyoming real estate at: wyoming real estate body jewelry at: body jewelry silver jewelry at: silver jewelry tooth jewelry at: tooth jewelry wedding jewelry at: wedding jewelry jewelry boxes at: jewelry boxes costume jewelry at: costume jewelry diamond jewelry at: diamond jewelry handcrafted jewelry at: handcrafted jewelry beaded jewelry at: beaded jewelry crystal jewelry at: crystal jewelry used car dealer at: used car dealer used car for sale at: used car for sale used car chicago at: used car chicago used auto part at: used auto part used car los angeles at: used car los angeles used car houston at: used car houston used car new york at: used car new york used car dallas at: used car dallas atlanta used car at: atlanta used car sell used car at: sell used car used car detroit at: used car detroit buy used car at: buy used car used car washington dc at: used car washington dc car undefined used at: car undefined used used car philadelphia at: used car philadelphia used car phoenix at: used car phoenix used car san diego at: used car san diego used car tampa at: used car tampa used car riverside at: used car riverside used car orange county at: used car orange county used car prices at: used car prices used car st louis at: used car st louis used car fort worth at: used car fort worth used car miami at: used car miami auto parts at: auto parts used auto part at: used auto part car truck part at: car truck part honda car part at: honda car part ford car part at: ford car part advance auto parts at: advance auto parts auto parts stores at: auto parts stores discount auto parts at: discount auto parts kragen auto parts at: kragen auto parts