DMVPN without IPsec

Hi all

Is the operation of DMVPN without IPsec configuration supported?

I'm testing it right now and hubs are losing conncetivity to rays. I wonder if it is because of not using IPsec.

Anyone tried this?

Attila

I guess you meant PNDH. If so look at the http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a0080435815.html

Tags: Cisco Security

Similar Questions

On DMVPNs selective IPSec encryption

Hello

I have a DMVPN with two rays on a MPLS-L3-IPVPN network. IPSec over GRE profiles using crypto. Works very well. Now, he only need to encrypt all traffic except EF DSCP. Tried with the help of ACB defining IP-Next Hop for EF-packages and just normal dug routing for all other types of traffic.

My question is, I know cryptographic cards that use ACLs can selectively encrypt traffic through the IPSec/GRE tunnels. Cryptographic profiles don't seem to have this feature. Is there another way to do this?

A snip Config by couple spoke it as below.

===============

interface GigabitEthernet0/0.1
DESC LAN i / f
IP 10.10.10.1 255.255.255.0
political intellectual property map route ACB

interface Tunnel100
IP 172.16.254.13 255.255.254.0
no ip redirection
property intellectual PNDH card 172.16.254.1 103.106.169.10
map of PNDH IP multicast 103.106.169.10
PNDH network IP-1 id
property intellectual PNDH nhs 172.16.254.1
property intellectual shortened PNDH
KeepAlive 10 3
source of tunnel GigabitEthernet0/1.401
multipoint gre tunnel mode
key 1 tunnel
Profile of tunnel DMVPN-Crypto ipsec protection
end

GIE Router 1
no car
NET 172.16.254.0 0.0.1.255
EIGRP log-neighbor-warnings
EIGRP log-neighbor-changes
! - router id
NET 10.10.10.0 0.0.0.255

ACB allowed 10 route map
ACB match ip address
IP 11.2.100.2 jump according to the value
!
ACB allowed 20 route map

ACB extended IP access list
permit icmp host 10.10.10.5 host 15.1.1.1 dscp ef
allow icmp host 10.10.10.5 host 15.1.1.1 dscp 41
deny ip any any newspaper

===============

Note: the routing table contains only a default route learned via EIGRP. Thus, if the ACB 10 past, policy would transmit to the Next-hop (PE). Or would otherwise use 0/0 and route thro' the tunnel.

Thanks in advance!

See you soon
Aravind

With DMVPN, no. You will need to return to the use of just cryptographic cards, only using access lists to control what is and is not encrypted.

If the "EF" traffic was dedicated VoIP subnets so you would have more options, you can choose everything just don't not to route these subnets above the Tunnel.

is it possible to run DMVPN on 7606 without ipsec module?

Hi everyone, we have 7606 router without any module ipsec on it, so I check the ios and there orders in the tunnel of the interface for the dmvpn tunnel multipoint configuration and protection for ipsec also profile! So I have this question: can they run dmvpn between this router and our wan routers are 3845 that im not worry theme (because they can of course)? Thanks in advance.

Hello

6500 and 7600 do not support IPsec VPN without VPN SPA or VPNSM (announced EOL), with the exception of access to the administration (long ago)

It is documented here:

http://www.Cisco.com/en/us/docs/interfaces_modules/shared_port_adapters/configuration/6500series/76ovwvpn.html#wp1089276

I would say, save yourself the trouble and effort :-)

Marcin

DMVPN and IPsec CLIENT?

Hello

I was wondering if it was possible to use CRYPTOGRAPHY even for both: DMVPN and CLIENT IPsec?

To make it work, I have to use 1 crypto for the DMVPN and 1 crypto for IPsec, both systems operate on the same router, my router TALK can connect to my HUB router and my computer can connect to the router "HUB" via an IPsec tunnel.

Is their any way to make it easier, instead of doing configs in a single router for more or less the same work?

My stitching question may be stupid, sorry for that, I'm still learning, and I love it

Here below the full work DMVPN + IPsec:

Best regards

Didier

ROUTER1841 #sh run

Building configuration...

Current configuration: 9037 bytes

!

! Last configuration change to 21:51:39 gmt + 1 Monday February 7, 2011 by admin

! NVRAM config last updated at 21:53:07 gmt + 1 Monday February 7, 2011 by admin

!

version 12.4

horodateurs service debug datetime localtime

Log service timestamps datetime msec

encryption password service

!

hostname ROUTER1841

!

boot-start-marker

boot-end-marker

!

forest-meter operation of syslog messages

logging buffered 4096 notifications

enable password 7 05080F1C2243

!

AAA new-model

!

!

AAA authentication banner ^ C

THIS SYSTEM IS ONLY FOR THE USE OF AUTHORIZED FOR OFFICIAL USERS

^ C

AAA authentication login userauthen local

AAA authorization groupauthor LAN

!

!

AAA - the id of the joint session

clock time zone gmt + 1 1 schedule

clock daylight saving time gmt + 2 recurring last Sun Mar 02:00 last Sun Oct 03:00

dot11 syslog

no ip source route

!

!

No dhcp use connected vrf ip

DHCP excluded-address IP 192.168.10.1

DHCP excluded-address IP 192.168.20.1

DHCP excluded-address IP 192.168.30.1

DHCP excluded-address IP 192.168.100.1

IP dhcp excluded-address 192.168.1.250 192.168.1.254

!

IP dhcp pool vlan10

import all

network 192.168.10.0 255.255.255.0

default router 192.168.10.1

lease 5

!

IP dhcp pool vlan20

import all

network 192.168.20.0 255.255.255.0

router by default - 192.168.20.1

lease 5

!

IP dhcp pool vlan30

import all

network 192.168.30.0 255.255.255.0

default router 192.168.30.1

!

IP TEST dhcp pool

the host 192.168.100.20 255.255.255.0

0100.2241.353f.5e client identifier

!

internal IP dhcp pool

network 192.168.100.0 255.255.255.0

Server DNS 192.168.100.1

default router 192.168.100.1

!

IP dhcp pool vlan1

network 192.168.1.0 255.255.255.0

Server DNS 8.8.8.8

default router 192.168.1.1

lease 5

!

dhcp MAC IP pool

the host 192.168.10.50 255.255.255.0

0100.2312.1c0a.39 client identifier

!

IP PRINTER dhcp pool

the host 192.168.10.20 255.255.255.0

0100.242b.4d0c.5a client identifier

!

MLGW dhcp IP pool

the host 192.168.10.10 255.255.255.0

address material 0004.f301.58b3

!

pool of dhcp IP pc-vero

the host 192.168.10.68 255.255.255.0

0100.1d92.5982.24 client identifier

!

IP dhcp pool vlan245

import all

network 192.168.245.0 255.255.255.0

router by default - 192.168.245.1

!

dhcp VPN_ROUTER IP pool

0100.0f23.604d.a0 client identifier

!

dhcp QNAP_NAS IP pool

the host 192.168.10.100 255.255.255.0

0100.089b.ad17.8f client identifier

name of the client QNAP_NAS

!

!

IP cef

no ip bootp Server

IP domain name dri

host IP SW12 192.168.1.252

host IP SW24 192.168.1.251

IP host tftp 192.168.10.50

host IP of Router_A 192.168.10.5

host IP of Router_B 10.0.1.1

IP ddns update DynDNS method

HTTP

Add http://dri66: [email protected] / * *//nic/update?system=dyndns&hostname=mlgw.dyndns.info&myip=[email protected] / * //nic/update?system=dyndns&hostname=mlgw.dyndns.info&myip=

maximum interval 1 0 0 0

minimum interval 1 0 0 0

!

NTP 66.27.60.10 Server

!

Authenticated MultiLink bundle-name Panel

!

!

Flow-Sampler-map mysampler1

Random mode one - out of 100

!

Crypto pki trustpoint TP-self-signed-2996752687

enrollment selfsigned

name of the object cn = IOS - Self - signed - certificate - 2996752687

revocation checking no

rsakeypair TP-self-signed-2996752687

!

!

VTP version 2

username Admin privilege 15 secret 5 $1$ gAFQ$ 2ecAHSYEU9g7b6WYuTY9G.

username cisco password 7 02050D 480809

Archives

The config log

hidekeys

!

!

crypto ISAKMP policy 3

BA 3des

preshared authentication

Group 2

!

crypto ISAKMP policy 10

md5 hash

preshared authentication

ISAKMP crypto cisco123 key address 0.0.0.0 0.0.0.0

!

ISAKMP crypto client configuration group 3000client

key cisco123

DNS 8.8.8.8

dri.eu field

pool VPNpool

ACL 150

!

!

Crypto ipsec transform-set strong esp-3des esp-md5-hmac

Crypto ipsec transform-set esp-3des esp-sha-hmac RIGHT

!

Profile cisco ipsec crypto

define security-association life seconds 120

transformation-strong game

!

!

Crypto-map dynamic dynmap 10

Set transform-set RIGHT

!

!

map clientmap client to authenticate crypto list userauthen

card crypto clientmap isakmp authorization list groupauthor

client configuration address map clientmap crypto answer

10 ipsec-isakmp crypto map clientmap Dynamics dynmap

!

!

!

property intellectual ssh time 60

property intellectual ssh authentication-2 retries

IP port ssh 8096 Rotary 1

property intellectual ssh version 2

!

!

!

interface Loopback0

IP 192.66.66.66 255.255.255.0

!

interface Tunnel0

172.16.0.1 IP address 255.255.255.0

no ip redirection

IP mtu 1440

no ip next-hop-self eigrp 90

property intellectual PNDH authentication cisco123

dynamic multicast of IP PNDH map

PNDH network IP-1 id

No eigrp split horizon ip 90

source of tunnel FastEthernet0/0

multipoint gre tunnel mode

0 button on tunnel

Cisco ipsec protection tunnel profile

!

interface FastEthernet0/0

DMZ description

IP ddns update hostname mlgw.dyndns.info

IP ddns update DynDNS

DHCP IP address

no ip unreachable

no ip proxy-arp

NAT outside IP

IP virtual-reassembly

automatic duplex

automatic speed

clientmap card crypto

!

interface FastEthernet0/0,241

Description VLAN 241

encapsulation dot1Q 241

DHCP IP address

IP access-group dri-acl-in in

NAT outside IP

IP virtual-reassembly

No cdp enable

!

interface FastEthernet0/0.245

encapsulation dot1Q 245

DHCP IP address

IP access-group dri-acl-in in

NAT outside IP

IP virtual-reassembly

No cdp enable

!

interface FastEthernet0/1

Description INTERNAL ETH - LAN$

IP 192.168.100.1 address 255.255.255.0

no ip proxy-arp

IP nat inside

IP virtual-reassembly

Shutdown

automatic duplex

automatic speed

!

interface FastEthernet0/0/0

switchport access vlan 10

spanning tree portfast

!

interface FastEthernet0/0/1

switchport access vlan 245

spanning tree portfast

!

interface FastEthernet0/0/2

switchport access vlan 30

spanning tree portfast

!

interface FastEthernet0/0/3

switchport mode trunk

!

interface Vlan1

IP address 192.168.1.250 255.255.255.0

IP nat inside

IP virtual-reassembly

!

interface Vlan10

IP 192.168.10.1 255.255.255.0

IP nat inside

IP virtual-reassembly

!

interface Vlan20

address 192.168.20.1 255.255.255.0

IP nat inside

IP virtual-reassembly

!

Vlan30 interface

192.168.30.1 IP address 255.255.255.0

IP nat inside

IP virtual-reassembly

!

interface Vlan245

IP 192.168.245.1 255.255.255.0

IP nat inside

IP virtual-reassembly

!

Router eigrp 90

network 172.16.0.0

network 192.168.10.0

No Auto-resume

!

IP pool local VPNpool 172.16.1.1 172.16.1.100

IP forward-Protocol ND

no ip address of the http server

local IP http authentication

IP http secure server

!

IP flow-cache timeout idle 130

IP flow-cache timeout active 20

cache IP flow-aggregation prefix

cache timeout idle 400

active cache expiration time 25

!

!

overload of IP nat inside source list 170 interface FastEthernet0/0

overload of IP nat inside source list interface FastEthernet0/0.245 NAT1

IP nat inside source static tcp 192.168.10.10 80 interface FastEthernet0/0 8095

!

access-list 150 permit ip 192.168.10.0 0.0.0.255 172.16.1.0 0.0.0.255

access-list 170 refuse ip 192.168.10.0 0.0.0.255 172.16.0.0 0.0.0.255

access-list 170 refuse ip 192.168.10.0 0.0.0.255 172.16.1.0 0.0.0.255

access-list 170 permit ip 192.168.10.0 0.0.0.255 any

access-list 180 deny ip 192.168.10.0 0.0.0.255 172.16.1.0 0.0.0.255

access-list 180 permit ip 192.168.10.0 0.0.0.255 any

not run cdp

!

!

!

route NAT allowed 10 map

corresponds to the IP 180

!

!

!

control plan

!

exec banner ^ C

WELCOME YOU ARE NOW LOGED IN

^ C

connection of the banner ^ C

WARNING!

IF YOU ARE NOT:

Didier Ribbens

Please leave NOW!

YOUR IP and MAC address will be LOGGED.

^ C

!

Line con 0

Speed 115200

line to 0

line vty 0 4

access-class 5

privilege level 15

Rotary 1

transport input telnet ssh

line vty 5 15

access-class 5

Rotary 1

!

Scheduler allocate 20000 1000

end

Didier,

Some time ago, I wrote a bit on VT, you should be able to find information about the server ezvpn DVTI it.

https://supportforums.Cisco.com/community/NetPro/security/VPN/blog/2010/12/08/advantages-of-VTI-configuration-for-IPSec-tunnels

The configuartion you have right now is the way to strives for ezvpn, with the new way DMVPN (protection of tunnel).

If it is true for the most part, it is best to go on the learning curve Moose and go everythign new configuration.

With EZVPN you can always assign IP from the pool by group ezvpn or external authorization ;-)

Anyway let me know if you face any problems.

Marcin

Classic DMVPN on IPSec. The force instead of UDP/4500 ESP?

Hi, we have classic DMVPN pattern with central router and rays, all IOS routers.

One of the remote sites a ISP evil, that filters GRE and ESP (I think they filter all except tcp, udp and icmp).

Is it possible to force speaks rather to use udp/4500 ESP?

All about suggestions? The mission satellite IP is dynamic and changes over time.

The router should already have NAT - T enabled by default, but if it is disabled, then you can configure the following:

Crypto ipsec nat transparency

Cisco 1941 DMVPN and Ipsec

Hello

You start to replace all of our ISA Server with with DMVPN cisco routers. So far, we are happy with everything, but I ran into a problem. I've just set up one of our agencies and the DMVPN works very well, but this location also has a VPN tunnel to another branch that we have not replaced with Cisco equipment yet. The problem I have is that as soon as I associate an ipsec site-to-site VPN on the router, the DMVPN drops.

I create the Ipsec VPN:

map VPN_Crypto 1 ipsec-isakmp crypto

game of transformation-ESP-3DES-SHA

the value of aa.aa.aa.aa peer

match address 103 (where address is allow remote local IP subnet the IP subnet)

and everything works fine. As soon as I do the following:

interface GigabitEthernet0/1

card crypto VPN_Crypto

The DMVPN drops. If I can connect to and run:

interface GigabitEthernet0/1

No crypto card

The DMVPN happens immediately.

What could I do it wrong? Here is the config for the Tunnel0 DMVPN tunnel:

interface Tunnel0

bandwidth 1000

192.168.10.31 IP address 255.255.255.0

no ip redirection

IP 1400 MTU

authentication of the PNDH IP DMVPN_NW

map of PNDH IP xx.xx.xx.xx multicast

property intellectual PNDH card 192.168.10.10 xx.xx.xx.xx

PNDH id network IP-100000

property intellectual PNDH holdtime 360

property intellectual PNDH nhs 192.168.10.10

dmvpn-safe area of Member's area

IP tcp adjust-mss 1360

delay of 1000

source of tunnel GigabitEthernet0/1

multipoint gre tunnel mode

tunnel key 100000

Tunnel CiscoCP_Profile1 ipsec protection profile

If you need anything else the config for help just let me know. Our main site router, I had no problem with him being the DMVPN hub and also having a handful of Ipsec VPN set up on it well. I appreciate a lot of help, I really need to get both of these tunnels running simultaneously as soon as possible.

Yes, but I don't see anything looking for strange (well, configs generated by CCP always sound strange...).

Maybe you run into a bug. Have you tried a different IOS? Personally I wouldn't use 15.2 if I have to. You can try 15.0 (1) M8 and see if it works.

--
Don't stop once you have upgraded your network! Improve the world by lending money to low-income workers:
http://www.Kiva.org/invitedBy/karsteni

DMVPN questions - IPsec packets

Hi all

Currently, I am configuring DMVPN for the first time. I followed the guide to configuring cisco and Googling a bit other strands however seems to have hit a brick wall.

The Setup is in a lab environment, so I can post as much information as required, but here's the important bits:

I have 3 routers Cisco 2821 running IOS 12.4 (15) with a layer 3 switch in the Middle connecting ports 'wan' together. the routing works fine, I can ping to each of the other router router.

Excerpts from the hub router config:

crypto ipsec transform-set DMVPN_SET esp-3des esp-md5-hmac

crypto ipsec profile DMVPN_PRJ

set transform-set DMVPN_SET

interface Tunnel0

bandwidth 10000

ip address 172.17.100.1 255.255.255.0

no ip redirects

ip mtu 1500

ip nhrp authentication secretid

ip nhrp map multicast dynamic

ip nhrp network-id 101

ip nhrp holdtime 450

ip tcp adjust-mss 1460

tunnel source GigabitEthernet0/0

tunnel mode gre multipoint

tunnel key 10101

tunnel protection ipsec profile DMVPN_PRJ

interface GigabitEthernet0/0

description HQ WAN

ip address 1.1.1.1 255.255.255.248

ip nat outside

ip virtual-reassembly

duplex auto

speed auto

and here's the config on the first router spoke:

crypto ipsec transform-set DMVPN_SET esp-3des esp-md5-hmac

crypto ipsec profile DMVPN_PRJ

set transform-set DMVPN_SET

interface Tunnel0

bandwidth 3000

ip address 172.17.100.10 255.255.255.0

no ip redirects

ip mtu 1500

ip nhrp authentication secretid

ip nhrp map 172.17.100.1 1.1.1.1

ip nhrp map multicast 1.1.1.1

ip nhrp network-id 101

ip nhrp holdtime 450

ip nhrp nhs 172.17.100.1

ip tcp adjust-mss 1460

tunnel source GigabitEthernet0/0

tunnel mode gre multipoint

tunnel key 10101

tunnel protection ipsec profile DMVPN_PRJ

interface GigabitEthernet0/0

description Site 1 WAN

ip address 11.11.11.1 255.255.255.248

ip nat outside

ip virtual-reassembly

duplex auto

speed auto

If I closed/no farm tunnel0 on RADIUS 1 interface, I get the following error on the hub router:

Mar 30 13:41:17.075: %CRYPTO-4-RECVD_PKT_NOT_IPSEC: Rec'd packet not an IPSEC packet.
(ip) vrf/dest_addr= /1.1.1.1, src_addr= 11.11.11.1, prot= 47

so I feel im lack some config on the side talking to encrypt the traffic, but I'm not sure what.

Here's the output router spoke:

RTR_SITE1#sh dmvpn detail

Legend: Attrb --> S - Static, D - Dynamic, I - Incompletea

N - NATed, L - Local, X - No Socket

# Ent --> Number of NHRP entries with same NBMA peer

-------------- Interface Tunnel0 info: --------------

Intf. is up, Line Protocol is up, Addr. is 172.17.100.10

Source addr: 11.11.11.1, Dest addr: MGRE

Protocol/Transport: "multi-GRE/IP", Protect "DMVPN_PRJ",

Tunnel VRF "", ip vrf forwarding ""

NHRP Details: NHS: 172.17.100.1 E

Type:Spoke, NBMA Peers:1

# Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb Target Network

----- --------------- --------------- ----- -------- ----- -----------------

1 1.1.1.1 172.17.100.1 IKE never S 172.17.100.1/32

Interface: Tunnel0

Session: [0x48E31B98]

Crypto Session Status: DOWN

fvrf: (none), IPSEC FLOW: permit 47 host 11.11.11.1 host 1.1.1.1

Active SAs: 0, origin: crypto map

Outbound SPI : 0x 0, transform :

Socket State: Closed

Pending DMVPN Sessions:

RTR_SITE1#sh ip nhrp detail

172.17.100.1/32 via 172.17.100.1, Tunnel0 created 00:33:44, never expire

Type: static, Flags: used

NBMA address: 1.1.1.1

RTR_SITE1#sh crypto ipsec sa

interface: Tunnel0

Crypto map tag: Tunnel0-head-0, local addr 11.11.11.1

protected vrf: (none)

local ident (addr/mask/prot/port): (11.11.11.1/255.255.255.255/47/0)

remote ident (addr/mask/prot/port): (1.1.1.1/255.255.255.255/47/0)

current_peer 1.1.1.1 port 500

PERMIT, flags={origin_is_acl,}

#pkts encaps: 0, #pkts encrypt: 0, #pkts digest: 0

#pkts decaps: 0, #pkts decrypt: 0, #pkts verify: 0

#pkts compressed: 0, #pkts decompressed: 0

#pkts not compressed: 0, #pkts compr. failed: 0

#pkts not decompressed: 0, #pkts decompress failed: 0

#send errors 46, #recv errors 0

local crypto endpt.: 11.11.11.1, remote crypto endpt.: 1.1.1.1

path mtu 1500, ip mtu 1500, ip mtu idb GigabitEthernet0/0

current outbound spi: 0x0(0)

inbound esp sas:

inbound ah sas:

inbound pcp sas:

outbound esp sas:

outbound ah sas:

outbound pcp sas:

All these commands appear as empty when I throw them on the hub router.

Any help appreciated.

Thank you

No negotiate is because you do not have an Ike key implemented. You need

Crypto ISAKMP policy 1

BA (whatever)

AUTH pre-shared

Group (whatever)

ISAKMP crypto key 0 some secret address 0.0.0.0 0.0.0.0

Hun and talks must match.

Your IPSec transform-set should also have "transport mode".

Sent by Cisco Support technique iPad App

DMVPN without PNDH

Hi all

The scenario, I am trying to solve is for a product of managed internet access we build where we want the 867VAE to the roll on a mass of small sites scale.

For each of our clients at the present time we have them all a DMVPN complete with talking to talking about a firewall with the exception of internal networks (so we can see our customers from several sites, but customers cannot see each other).

The 867VAE does not yet support the DMVPN, but we still need a simple remote management/access solution.

My thought is:

The head end

1. create love No. PNDH interface, but still activate encryption

2. enable the RIP (only choice on 867VAE)

867VAE CPE:

1. create the TPP WILL interface with encryption and RIP.

Before that I spend hours testing this - can we see a reason why it wouldn't work?

Here, our requirement, is that we want full visibility of the network to the Subscriber (PC / servers) so there need encryption, but we have plenty of voices on this or anything which would need all the DMVPN features.

Thank you

Scott

Scott,

Config and similar to this concept:

https://supportforums.Cisco.com/thread/2089906

And you can run RIP on top.

M.

PNDH Cache problem

I have a DMVPN without IPSEC configuration. My one hub is connected to 10 rays through pure WILL and I'm running OSPF. I put my holdtime PNDH = 5 minutes. When 5 minutes idle time is passed, I'm doing a show ip PNDH and find that the connection has expired remains still in the cache as below:

tunnel created 05:15, expired

The cache is in conformity with the provisions only disappear at 6 minutes. If I do a ping between 5 and 6 minutes test, query time-out is obtained. My ping test begins to become the positive response that after 6 minutes where the cache is in conformity with the provisions is removed and replaced with a new one as shown below:

tunnel created 0:05 expiring 04:55

How to make the cache disappear immediately for 5 minutes so that I have lost connection for 1 minutes, it is between 5 and 6 minutes?

Thank you very much.

The problem is documented as bug CSCdy45826. You should probably upgrade to the version where this problem has been fixed.

2 IPSec VPN + DMVPN

Hello.

Could you please tell me, how to create the second IPSec VPN on my router if crypto card is already set to the interface, and there is no other. This interface is also the NHRP\DMVPN interface. Router is a hub.

Hey, Nikolay.

For new dmvpn cloud you don't don't have set up a crmap to the interface. You can create a new tunnel interface and link a different transfer for her.

If you want to add an IPsec-l2l connection or a new EasyVPN you can look at this example:

Crypto ipsec transform-set esp-3des esp-md5-hmac trset1
transport mode
output

Crypto ipsec transform-set trset2 aes - esp esp-sha-hmac

map CRNAME 1 ipsec-isakmp crypto
Description - VPN - 1
defined peer IP_1
Set transform-set trset1
match address ACL_1
output

map CRNAME 2 ipsec-isakmp crypto
Description - VPN - 2
defined peer IP_1
Set transform-set trset2
match address ACL_2
output

interface FastEthernet0/0
Description - outdoors-
card crypto CRNAME
output

For an EasyVPN (or any other dynamic encryption card), you can use this example:

crypto dynamic-map DYNMAP 1
transform-set Set feat
market arriere-route
output

card crypto crmap 3 - isakmp dynamic ipsec DYNMAP

And example for DmVPN clouds to the 1 Router 2:

Crypto ipsec transform-set esp-3des esp-sha-hmac trset_1
tunnel mode
output
Crypto ipsec transform-set esp-3des esp-md5-hmac trset_2
transport mode
output

Crypto ipsec Dmvpn-Profile1 profile
Set transform-set trset_1
output
Crypto ipsec profile Profil2 dmvpn
Set transform-set trset_2
output

Tunnel1 interface
[network] IP address
dynamic multicast of IP PNDH map
PNDH network IP-1 id
source of tunnel FastEthernet0/0
multipoint gre tunnel mode
key 1 tunnel
Tunnel protection ipsec Dmvpn-Profile1 profile
output

interface tunnels2
[network] IP address
dynamic multicast of IP PNDH map
PNDH network IP-2 id
source of tunnel FastEthernet0/0
multipoint gre tunnel mode
tunnel key 2
Profile of tunnel dmvpn Profil2 ipsec protection
output

Best regards.

How can I bypass ipsec tunnel when do ftp?

Hello

I would like to make an IPsec VPN tunnel between my breanch and Headquarters Office (VPN router). I do FTP specific ip on the Internet without IPsec tunnel. This should be happenning on my website. then when users try to ftp://125.7.123.46 it should work around the tunnel and connect directly?

Can any one give me a heads up how do I do this on my router?

Thanks in advance,

Reza

Reza,

In order to achieve this the 192.168.10.0/24 network server, here's what you need:

##########################################

access-list 150 deny ip 192.168.10.0 0.0.0.255 192.168.2.0 0.0.0.255

access-list 150 permit ip 192.168.10.0 0.0.0.255 any

overload of IP nat inside source list 150 interface Dialer0

interface Ethernet0

IP nat inside

interface Dialer0

NAT outside IP

#########################################

With the above configuration you have access to Internet in the 192.168.10.0/24 network without disturbing the IPsec traffic.

You have this double threat?

Federico.

IGP and GRE Tunnel

GRE.png

Please see the photo above two connected sites using FA 0/1 R1 and R2 and a GRE Tunnel is formed.

Case 1:

We have a point-to-point connection between two routers and the IP address assigned to FA 0/1 on R1 and R2 belong to the same subnet. We then configure a GRE Tunnel on these as indicated in the topology:
- Using such as eigrp and ospf IGP we can peer routers R1 and R2 using the tunnel and the point-to-point connections.
- This will make the redundant paths between two routers
- This will form the double equal relationship between the two routers (for example for EIGRP or OSPF).
- Or we can tunnel just for the exchange of traffic between two routers.
My Question:
1. What is the standard in this topology using the two connection for iGP peering or just tunnel in the real world?
2. What is the standard in this topology using the two connection for iGP peering or tunnel just in a review?
Case 2:

If Fa 0/1 on both routers is all public IPs and in fact do not belong to the same subnet. So I think that we have to create a Tunnel between the two routers and then use the tunnel both routers for iGP peer.

My Question:
- I just want to know there is a valid case and also do we get this case in a review?
What comments can you do on both cases freely, I just create these two cases to clear my mind.

Basically the tunnel's link to Point Virtual Point between two routers. When you have two router physically connected by Point to point the link for this tunnel has no utility, but if you have two routers separate my many network jumps then GRE and IPsec tunnel is useful, and in this case tunnel gives you the ease of the logical Point to Point network.

In the tunnel you can run any routing protocol ospf, eigrp, BGP route smiler or Sttic as interface point-to-point between two routers.

Answer to your question on my opinion are as below

case 1
1. What is the standard in this topology using the two connection for iGP peering or just tunnel in the real world? -No use of the tunnel in this case in the real world so he will use any routing protocol between physical point-to-point interface.
2. What is the standard in this topology using the two connection for iGP peering or tunnel just in a review? -Same as above point Exam are mostly due to the scenario of the real world (not sure what you're talking about what exam).
Case 2
- I just want to know there is a valid case and also do we get this case in a review? -Yes, this is valid in the real world, but also optical examination specially DMVPN and Ipsec tunnel in the CCIE exam.
Please always evaluate the useful post!

Kind regards

Pawan (CCIE # 52104)

Types of Vpn"

Hi all

It is a matter totally newbie but here's...

It is written in some places, the L2TP, PPTP and GRE are types of vpn tunnels, if for example you can create a dialer L2TP and (after authentication), it will form a tunnel L2TP, which you can wrap in a GRE tunnel

first of all, what is the need for this? Because L2TP allows to transfer any layer 3 Protocol. you need top GRE?

the other thing is, in some texts, there are explanations on the configuration a L2TP on the LAKE and the LNS and of course as a dialer to the client end. no free WILL. so... what exactly? is it a tunnel? What is a dialer? is it two? What are the differences, and when I would prefer one over the other?

Ipsec, isakamp, encryption, mapping all phases are well understood. My confusion is these types different tunnel/dialer.

Thanks in advance,

Willow

Dear friends,

Let me join you.

(1) what is the difference between L2TP and GRE? they need IPSec and are has a few tunnels, while L2TP is also a dialer via PPP/PPPoe to connect to the ISP.

L2TP is used to encapsulate and tunnel set Layer2 frameworks (e.g. Ethernet, HDLC, PPP, Frame Relay, or ATM) including their payload. GRE is used to encapsulate and tunnel Layer 3 packets (such as IPv4 or IPv6). There are other significant differences between free WILL and L2TP, but at this stage, I consider it the most important distinction between them. In other words, if you consider a tunnel to a pipe, and then with L2TP, you would be feeding Layer2 frames in this pipe and with free WILL, you could feed Layer 3 packets in this pipe. The choice of L2TP or free WILL depends on the application - whether you need tunnel frames together because they are sent by the source, or if you just need packages of origin without their tunnel link layer encapsulation.

In fact, there is an exception to the above rules that may make things more confusing. You can also tunnel Layer2 executives through tunnels GRE as well. The trick is to know what kind of frame you syringe in a GRE packet. If you look more closely the format of the header 4 bytes to the base address WILL, the first 2 bytes specify version GRE and indicators and the 2 following bytes have the same meaning as the EtherType Ethernet field: they identify the type of payload of the GRE packet. If there is a valid EtherType value recorded for the frame you want to carry through a GRE tunnel, then by all means, you can create a tunnel it. If there is no registered EtherType value then you are in trouble because you can't invent a value and put it there - maybe receiver endpoint do not understand the value, or it can it be confused with another protocol and process encapsulated incorrectly frame. All the common Layer 3 protocols have their EtherType recorded because they are intended to be carried in Ethernet frames, so with Layer 3 packets, we generally have no problem. However, not all the Layer2 protocols have their EtherTypes because tunneling frames within other frames is not a common practice. This is why the nature of the ACCORD as a Layer 3 mainly tunneling protocol.

Just for your convenience, you can find the list of EtherType values to

http://standards-Oui.IEEE.org/EtherType/ETH.txt

L2TP or IPsec need se GRE. The two protocols of defintion will happily run without IPsec, but then, of course, they will carry all data encrypted and unprotected. IPsec is an add-on to the two protocols to ensure data transmission security (authentication, confidentiality, integrity, protection against replay attacks).

By saying "L2TP is also a dialer via PPP/PPPoE to connect to the ISP" you want to say probably virtual-PPP interface - am I wrong? Can you clarify this more in detail?

(2) what is the Protocol-point difference charged and tunnel point-to-point protocol? since they both are supported on non - IP traffic

PPP is a protocol of Layer2 and is intended to be run directly through the physical network interfaces. It is not a tunneling protocol, it is rather a protocol binding to data originally created to be used on interfaces series of computers and routers. He replaced or complete other binding protocols series such as SLIP or HDLC. Regarding the installation of the OSI model, PPP is on the same layer that Ethernet - both run through the physical network interfaces and define how two directly connected network interfaces to send messages between them.

PPTP is a tunneling protocol that uses a modification of the GRE protocol and Protocol additional signs to tunnel PPP frames in IP packets on a routed network. It's the confusing thing, PPTP: she uses GRE to tunnel PPP frames and only PPP frames. You can't see other types of PPTP traffic directly - it was not designed to function this way even if the Agreement itself would be able to do this. Instead, what you want to carry on a PPTP tunnel must first be put in PPP frames, and they will get so encapsulated WILL and sent on the tunnel on the other side.

The fact that the PPP is used inside PPTP does not imply that the PPP was invented with PPTP in mind. It actually has the opposite - PPP existed well before PPTP and creators of felt PPTP that it would be beneficial to use because it provides some features neat it otherwise would re-implement (authentication, superior negotiation of the Protocol, the IP autoconfiguration to name a few). The fact that the PPP is used inside PPTP does not have PPP, only a tunneling protocol; PPP is rather just a "victim" of PPTP.

PPTP is not a data link layer protocol, it is not directly used on any type of physical interface, on the contrary: PPTP expects connectivity IP base (using any type of data link layer and physical) between endpoints is already in place.

(3) what about standalone (no GRE) PPTP? why they want PPTP running inside a GRE? How to get it? also, why can I not use PPTP with GRE and ipsec for security, or simply of PPTP with ipsec? Why should I use L2TP? What is its benefits?

PPTP consists internally of a somewhat modified GRE more additional control running on TCP channel which provides the installation of the tunnel and disassembly session. There is no such thing as a standalone without GRE PPTP: PPTP is Grateful, even if not a vanilla ACCORD, rather an adapted version of it.

On the combination of PPTP and IPsec - technically, there nothing that would prevent you from protecting a PPTP with IPsec tunnel. It's just a unicast IP traffic and all this kind of traffic between two fixed end points can be protected by IPsec. If this combination is not available on a particular device or operating system, it is simply because this combination was never sufficiently strongly requested by customers to be implemented by providers.

L2TP has the advantage of being richer, more widely supported and actively developed, but it was really designed to be used in environments of provider where hundreds or thousands of individual subscribers and their traffic are by tunnel between an access concentrator and a network server. These features are not used if the L2TP is terminated in a single user PC or router home. Of course, it has nothing bad about it, there just the L2TP is an excessive for such a small scale deployment. Yet, as it turns out, PPTP is considered to be more be simply outdated and not developed or maintained and L2TP is universally suggested as one of the possible replacements.

(4) who is the dialer in GRE + IPSEC tunnel (or free WILL independent tunnel?) this Protocol is used? which layer 2 is used to make the connection?

I'm not quite sure what you mean by the "dialer". With Volition, encapsulation is

IP tunnel header. GRE header | Package originating IP

This whole package is an IP packet, and is simply routed over the network to the tunnel endpoint, décapsulés-L2 and L2 encapsulated at each router according to the normal rules.

(5) when you say GRE protocol 47 and ipsec uses the protocol 50 or 51 (esp / ah)-how the two, they meet? How to watch an encapsulation with these two protocols? What is used at each layer?

Depending on whether IPsec is used in transport or tunnel mode, a GRE packet protected by IPsec looks like this:

Tunnel mode:
Intellectual property for the IPsec tunnel header. ESP / AH | GRE tunnel IP header | GRE header | Package originating IP

Mode of transport:
GRE tunnel IP header | ESP / AH | GRE header | Package originating IP

With IPsec protection, the outer header (on the left shown) will always use the value of protocol 50/51. The value of Protocol 47 is engaged in the header of GRE IP tunnel (tunnel mode) or is moved to the ESP header's next header field / AH (mode of transport).

(6) that LNS actually means "a L2TP server just insdie a router?

LNS means L2TP Network Server and it peut - but does not need to-say that this feature is implemented in a network router. LNS is a software service, and it can be done either in the operating system (and perhaps partially in hardware) of a router, or it can be run on a server. There are implementations of the feature of LNS for Linux servers, for example.

The terminology of the LAKE (L2TP Access Concentrator) and LNS (L2TP Network Server) is given by the RFCS that specify the use of L2TP. These RFCs do not oblige how or where these two elements are implemented. Any device that performs the tasks of LAKE or LNS is called a LAKE or a LNS, and either a dedicated router or even a PC or a raspberry Pi is not serious to L2TP.

(7) if I come with a GRE tunnel and ipsec, I still need to use L2TP as dial-up at the end of the customer, I don't?

Certainly not - the GRE tunnels create IP packages, and these IP packets will be routed to the other end of the tunnel through existing IP connectivity. Until you can have a GRE tunnel between two end points, you must have a connectivity IP to work between them (this is the same as for PPTP; after all, PPTP is based on the GRE). There is no need to use L2TP here. Even if encapsulate you the GRE in IPsec, you still get an IP packet that you can send to the other end of the tunnel, as there is already usable IP connectivity.

Welcome to ask for more!

Best regards
Peter

Encryption of Gigabit

Hi all

I'm looking for a Cisco router (preferably) for a design I have write

who is able to carry out a Gigabit throughput and IPSEC encryption

at this rate.

Any ideas/experience? It is a MPLS VPN connection and we hear

using DMVPN with IPSEC for encryption of the EC - ec. That's a financial House and headquarters

Circuit must be gigabit.

Thank you all

Stephen

Stephen,

I'm not sure of current sheets, perhaps better to do a ping of a Cisco self?

Possible solution cat6k + VPN SPA or ASR1k (not sure that sheets are saying about this last tho)

Marcin

Edit: ASA will not manage DMVPN so I did not mention 5580.

Find the link, I had in mind

http://www.Cisco.com/en/us/prod/collateral/iosswrel/ps6537/ps6586/ps6635/ps7180/prod_brochure09186a00801f0a72.html

With regard to the experience...

If you don't want one not far from the step configuration guide, VPNSPA is very correct.

ASR1k has a good potential, but it's still new, a great team so internally.

Anti-replay window size

Hello
We would like to increase the size of the protection window anti-replay on our routers ISR connected to ASR using DMVPN. On the SERP, I can use up to 1024, but ASR only limited to 512.
I wonder if I can set up two sizes of different windows on SRI - 1024 and ASR - 512, connected to each other via DMVPN, without implications/issues. (I think 512 should be sufficient for the side of the ASR but SRI would need more).

Thank you!

Yes you can have sizes of separate windows anit-replay - the check is local and is only done in the inbound direction.

Now what you might want to remember that allows this feature implies not existing connections will begin using the new windows immediately.

DMVPN without IPsec

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