February 03, 2006

debug ip ospf adj (Authentication)

We talk about something more about MD5 authentication in this very beginning:

MD5 authentication provides higher security than plain text authentication. This method uses the MD5 algorithm to compute a hash value from the contents of the OSPF packet and a password (or key). This hash value is transmitted in the packet, along with a key ID and a non-decreasing sequence number. The receiver, which knows the same password, calculates its own hash value. If nothing in the message has changed, the receiver's hash value should match the sender's hash value which is transmitted with the message.

The key ID allows the routers to reference multiple passwords. This makes password migration easier and more secure. For example, to migrate from one password to another, configure a password under a different key ID and remove the first key.

The sequence number prevents replay attacks, in which OSPF packets are captured, modified, and retransmitted to a router. As with plain text authentication, MD5 authentication passwords do not have to be the same throughout an area. However, they do need to be the same between neighbors.

R1-2503# debug ip ospf adj

00:51:23: OSPF: Rcv pkt from 192.16.64.2, Serial0 : Mismatch Authentication type. Input packet specified type 0, we use type 1
!--- Indicates that the neighbor is configured
!--- for Null authentication (Type 0) whereas this router is
!--- configured with Plain-text (Type 1) authentication.
00:51:33: OSPF: Rcv pkt from 192.16.64.2, Serial0 : Mismatch Authentication Key - Clear Text
!--- Both neighbors are configured for Plain-text
!--- authentication but Authentication key values do not match.
00:59:33: OSPF: Rcv pkt from 192.16.64.2, Serial0 : Mismatch Authentication type. Input packet specified type 1, we use type 2
!--- Neighbor is configured for Plain text
!--- authentication (Type 1) and this router is configured
!--- for Message digest authentication (Type 2) resulting in mismatch.
00:59:33: OSPF: Send with youngest Key 1
00:59:43: OSPF: Rcv pkt from 192.16.64.2, Serial0 : Mismatch Authentication Key - No message digest key 2 on interface
!--- Signifies that neighbor is configured
!--- for key 2 whereas the local router is configured with Key 1.

11 Comments:

At 2/03/2007 08:12:00 PM, Anonymous Anonymous said...

Wonderful and informative web site. I used information from that site its great. Used vw ny Portable ultra violet air cleaners books craps nexium toused nexium slot+machine+free+quote Raynauds treatment with cialis laptop earphones Ge appliances in canada Tribal and rose tattoo Hummer body kits http://www.porsche-0.info/Canadaclubporscheupper.html 1986 vw camper van to buy porsche 356 gs gay forums for under 16 Celexa for obsessive compulsive behavior free full spyware

 
At 2/16/2007 01:38:00 AM, Anonymous Anonymous said...

I have been looking for sites like this for a long time. Thank you! Neurontin similar product Car alarm guard saab 9 5 sub woofer Md domain barcode funk scanner saab aftermarket lights 89 gmc sierra Edward gorey+curious sofa Big hands tits radiant gas heaters eaves effexor forum xr Portable saunas sauna saunasteamsecrets.com Saab 95 2.2 tid report Cabinet door glass kitchen stained Business insurance for freelance graphic designer Burne honda in scranton pa Car park sun shades covers united states

 
At 2/22/2007 02:51:00 PM, Anonymous Anonymous said...

Best regards from NY! » » »

 
At 4/25/2007 08:52:00 AM, Anonymous Anonymous said...

That's a great story. Waiting for more. Kodak patents interest process sun eastman offering end loan cpus discount mexican pharmacy that sells modafinil or provigil Bextra and heart problem umaxppc Calcium channel blockers viagra France general electric refrigerator water filter acura suv

 
At 10/28/2014 09:49:00 AM, Blogger oakleyses said...

longchamp outlet online, burberry outlet online, michael kors outlet online, christian louboutin shoes, longchamp handbags, ray ban outlet, michael kors outlet online, louis vuitton outlet, oakley vault, chanel handbags, nike air max, louboutin shoes, kate spade handbags, prada handbags, louis vuitton handbags, coach outlet store online, kate spade outlet online, christian louboutin outlet, longchamp outlet, nike free, gucci handbags, louis vuitton outlet online, polo ralph lauren, louis vuitton outlet, oakley sunglasses, tiffany and co jewelry, michael kors outlet online, cheap oakley sunglasses, michael kors outlet, tiffany jewelry, burberry outlet online, ray ban sunglasses, coach outlet, louis vuitton, michael kors outlet online, prada outlet, coach purses, jordan shoes, nike shoes, tory burch outlet, nike air max, red bottom shoes, polo ralph lauren outlet, michael kors outlet store, coach outlet

 
At 10/28/2014 09:49:00 AM, Blogger oakleyses said...

oakley pas cher, hollister, timberland, air max, nike roshe, true religion outlet, air max pas cher, sac vanessa bruno, ralph lauren pas cher, abercrombie and fitch, new balance pas cher, north face pas cher, chaussure louboutin, hollister, longchamp pas cher, hermes pas cher, nike roshe run, lululemon, barbour, nike air force, vans pas cher, air jordan, nike blazer pas cher, michael kors canada, nike air max, louis vuitton pas cher, ray ban pas cher, guess pas cher, nike free pas cher, louis vuitton uk, nike trainers, nike free, scarpe hogan, nike air max, true religion, longchamp, ray ban uk, north face, ralph lauren, sac louis vuitton, tn pas cher, converse pas cher, burberry pas cher, nike huarache, true religion outlet, louis vuitton, mulberry, sac michael kors, lacoste pas cher, michael kors uk

 
At 10/28/2014 09:50:00 AM, Blogger oakleyses said...

insanity workout, mac cosmetics, vans outlet, ghd, moncler, moncler, wedding dresses, moncler outlet, abercrombie and fitch, jimmy choo shoes, north face outlet, instyler ionic styler, north face jackets, roshe run, canada goose pas cher, new balance outlet, uggs outlet, rolex watches, asics shoes, ugg outlet, soccer shoes, canada goose uk, herve leger, birkin bag, longchamp, canada goose, reebok shoes, canada goose outlet, valentino shoes, canada goose outlet, ferragamo shoes, nfl jerseys, uggs on sale, p90x workout, soccer jerseys, hollister, lululemon outlet, mcm handbags, ugg soldes, celine handbags, ugg boots, mont blanc pens, canada goose outlet, chi flat iron, bottega veneta, marc jacobs outlet, ugg, beats headphones, giuseppe zanotti, babyliss pro

 
At 3/28/2016 08:31:00 AM, Blogger oakleyses said...

burberry handbags, ugg boots, nike outlet, tiffany and co, christian louboutin, oakley sunglasses, ray ban sunglasses, replica watches, uggs outlet, uggs on sale, cheap oakley sunglasses, michael kors outlet, kate spade outlet, prada handbags, louis vuitton outlet, polo outlet, jordan shoes, tory burch outlet, oakley sunglasses wholesale, gucci handbags, replica watches, louis vuitton outlet, nike air max, louis vuitton, michael kors outlet online, christian louboutin shoes, prada outlet, chanel handbags, michael kors outlet, oakley sunglasses, ugg boots, oakley sunglasses, tiffany jewelry, uggs outlet, ray ban sunglasses, nike free, michael kors outlet online, nike air max, christian louboutin outlet, louis vuitton, longchamp outlet, christian louboutin uk, michael kors outlet online, ray ban sunglasses, polo ralph lauren outlet online, louis vuitton outlet, michael kors outlet online, longchamp outlet

 
At 3/28/2016 08:34:00 AM, Blogger oakleyses said...

mulberry uk, nike tn, abercrombie and fitch uk, nike air max, nike free run, lululemon canada, true religion outlet, oakley pas cher, longchamp pas cher, nike free uk, sac hermes, nike blazer pas cher, hollister uk, true religion jeans, new balance, air max, coach outlet store online, north face uk, coach outlet, north face, michael kors pas cher, true religion outlet, nike roshe run uk, nike air max uk, polo lacoste, michael kors, hollister pas cher, vans pas cher, nike air max uk, polo ralph lauren, jordan pas cher, timberland pas cher, nike air force, nike roshe, burberry pas cher, converse pas cher, michael kors outlet, sac vanessa bruno, ray ban pas cher, ralph lauren uk, kate spade, replica handbags, ray ban uk, michael kors, louboutin pas cher, true religion outlet, coach purses, guess pas cher, hogan outlet, sac longchamp pas cher

 
At 3/28/2016 08:35:00 AM, Blogger oakleyses said...

mont blanc pens, reebok outlet, mcm handbags, bottega veneta, abercrombie and fitch, hollister, nike roshe run, nike trainers uk, longchamp uk, celine handbags, insanity workout, iphone 6s plus cases, instyler, iphone cases, s6 case, mac cosmetics, herve leger, soccer jerseys, wedding dresses, north face outlet, new balance shoes, ferragamo shoes, iphone 5s cases, lululemon, ralph lauren, timberland boots, nike huaraches, soccer shoes, chi flat iron, asics running shoes, iphone 6s cases, jimmy choo outlet, valentino shoes, hollister clothing, iphone 6 cases, ipad cases, babyliss, vans outlet, nfl jerseys, north face outlet, giuseppe zanotti outlet, beats by dre, p90x workout, louboutin, oakley, ghd hair, baseball bats, hermes belt, iphone 6 plus cases, nike air max

 
At 3/28/2016 08:40:00 AM, Blogger oakleyses said...

hollister, coach outlet, barbour, canada goose outlet, ugg uk, wedding dresses, canada goose outlet, canada goose uk, toms shoes, doudoune moncler, moncler outlet, louis vuitton, moncler outlet, links of london, ugg,uggs,uggs canada, montre pas cher, louis vuitton, nike air max, lancel, converse, swarovski crystal, moncler, juicy couture outlet, juicy couture outlet, moncler uk, canada goose jackets, ugg pas cher, moncler, pandora jewelry, swarovski, gucci, ugg, vans, hollister, louis vuitton, louis vuitton, karen millen uk, canada goose outlet, marc jacobs, canada goose, supra shoes, louis vuitton, thomas sabo, ugg,ugg australia,ugg italia, pandora uk, barbour uk, pandora jewelry, moncler, converse outlet, ray ban, moncler, canada goose

 

Post a Comment

Links to this post:

Create a Link

<< Home