Cisco :: VPN Tunnel Or Transport Mode And NAT
May 13, 2011I find it hard to understand tunnel and transport mode, the differences between them, and NAT. Ok so I have this scenario: Site2site VPN with 2 Cisco routers.
View 8 RepliesI find it hard to understand tunnel and transport mode, the differences between them, and NAT. Ok so I have this scenario: Site2site VPN with 2 Cisco routers.
View 8 RepliesI'm now trying to implement a IPsec VPN network over transport mode in my simple network environment.I got two Cisco 2811 routers connected each other and each router hosts a client PC running Windows7.
I have finished the configuration on both routers and make them running over transport mode.However, as what it should be, transport mode indicates the communication between two end stations (two PCs) the client PC (install or configure something) to make the network fully works?
We have cisco 7600 Router with 76-ES+XT-4TG3C Module connected. The Module is getting detected after upgrading the Router with SRD5 IOS.Below are the testing which we have done on the Router but we are facing the issue while configuring the Transport mode LAN and Transport Mode WAN:Brief about this is:- 2 Cisco 7606-s Router with Module 76-ES+XT-4TG3C each.- two ports on 7606-s Ten2/1 & Ten2/2 are configured as a Transport mode WAN while Ten2/3 & Ten2/4 are configured as Transport mode LAN.- We connect Fiber Cable from LAN Port to MUX and from MUX to 2nd LAN Port of the same Router. Same thing we tested by using the WAN Port-MUX-WAN Port connection.- Now on MUX end LAN port, connected Single and Multi mode fiber and on 7606 end 2/4 port which is configured as transport mode LAN, using Multimode SFP module -> XFP-10G-MM-SR, port did not came up then replaced 2/4 port with single mode SFP ->XFP-10GLR-OC192SR port came up. this is testing for LAN.- For WAN testing on MUX end used WAN port and on 7606 end checked with single mode and multimode fiber and with single XFP-10GLR-OC192SR / mulimode XFP-10G-MM-SR SFP, port did not come up.Wanted to know 1) If we have to go for Transport Mode LAN then which SFP/XSFP Module should go with along with the Single/Multimode Fiber.2) If we have to go for Transport Mode WAN then which SFP/XSFP Module should go with along with the Single/Multimode Fiber.Anything else is required while configuring the Transport Mode WAN as this is for Packet-Over_SONET/SDH? 3) MUX Side change is required while connecting both of this Modes on Cisco 7600 Router.4) Is hardware of the Router is giving any issue? Though we tested by connecting Back to Back LAN Port as well as Back to Back WAN Port. In both the situation the Ports are coming UP.
View 1 Replies View RelatedI have a requirement to connect two 3750 switch with 10G speed between two sites with 150km distance. We will lay-out our own fiber (48 core) between two sites. I just want to consult the following:
1. Could i use two core switch 6500 with single mode fiber as a transport equipment?
2. Or i need to use SDH equipment because of the distance concern? If so do i need a repeater?Could i use Cisco Metro Core ONS, which one?
3. Any other option to achieve this requirement?
I'm in process of purchasing a new Cisco routers for our branches that will be used primary to enable IPSec virtual tunnel interfce with "tunnel mode ipsec ipv4". does the default IOS IP Base supports this feature? or i need to purchase DATA license or SECURITY license?
View 4 Replies View RelatedCurrently, I have in a number of remote sites (with dynamic public address) a C800.On this Cisco, I have a config for initiating an agressive-mode tunnel to a central ASA.relevant part of the config:
---
crypto isakmp policy 10
encr aes
authentication pre-share
group 2
!
crypto isakmp peer address 1.2.3.4
[code].....
Now I need to replace these C800 by ASA5505. But I don't know how to replace the "crypto isakmp peer address" command in ASA.The C800 transmits both the password (abcdefg in my example) and the fqdn (remotesite1 in the example). how to configure the ASA to build the tunnel the way the C800 did?
I am trying to implement RBSCP on two 3845s running 15.1(4)M1 Adv Enterprise over a satellite link. The "show" commands all look correct, but whenever I policy route my machine through the RBSCP tunnel I dont even make it to the opposite side. However, if I remove the "tunnel mode RBSCP" command so it acts like a regular GRE tunnel, I route through it just fine. So I know its not a NAT, routing issue. [code]
View 1 Replies View RelatedMy remote VPN device (static IP address) is setup to connect on the ASA5520 DMZ interface.
Peers performing L2L IPsec VPN with pre-shared keys sync-up regardless of which identity mode selected. If I set the router to “crypto isakmp identity address” or “crypto isakmp identity hostname” the ASA still accepts the connection. Also tunnel mode on initiator (router) is set to “TRANSPORT” but negotiates to TUNNEL mode with ASA.
I am able to successfully ping and telnet from a remote device through the router -- ASA5520 VPN tunnel into the HQ hosts so I can see communication is working.Initial ISAKMP negotiation debugs on router (below) shows the differences but the ASA accepts anyway.
-ASA5520 8.0(4) running in router mode
-ASA should only answer, never initiate VPN sessions
-Cisco 2800 router IOS 12.4 Adv Security should always initiate the VPN session.
-Cisco 2800 router does not have option of key-id, only address, hostname and dn.
What does a firewall block at the transport layer?
View 1 Replies View RelatedI have "transport local ssh" but its still allowing telnet??This is a 2960 switch Here is the end of running config:
Code:
I would like to transport two time slots (TDM traffic) over an IP network in order to connect two telecom devices located in different sites, i have cisco 2811 routers on both sites with ip advanced services 12.4.20T IOS
View 5 Replies View RelatedGeting this message, having low performance and overrun errors Apr 29 13:45:59 pix-servidores %PIX-4-500004: Invalid transport field for protocol=TCP, from 188.120.243.238/80 to 174.56.110.0/0
View 3 Replies View RelatedI have a Linksys E2000 router & a HP Officejet 6500A PLUS all-in-one printer. While printing, at a certain moment, the printer stops printing, rolls the sheet out & act like nothing happened. But, when i use an adhoc connection, the printer works just fine. So i think there has to be something wrong on transport (router?)
View 5 Replies View RelatedThis network has a peer network with a mixture of Win 7, Vista and XP computers. The network problem I am having is with an XP computer that was able to access network shares on a Win 7 Pro (64-bit) computer yesterday, but cannot today. I tried repair steps that have worked for me in the past, but didn't today.
1. Rebooted.
2. Turned off Windows Firewall.
3. Re-ran the Network Setup Wizard and select turn on file and print sharing.
4. Changed IP configuration to choose NETBIOS over TCP/IP.
5. Uninstalled AV software.
Error Messages that I have been receiving:
1. When attempting to connect to a share on Win 7 PC: "Microsoft Windows Network: The specified server cannot perform the requested operation. The connection has not been restored."
2. When trying to view the computers in the workgroup: "Workgroup is not accessible. You might not have permission to use this resource. Contact the administrator of this server to find out if you have access permissions. The specified server cannot perform the requested operation.
3. When using the command, "NET VIEW" from the command prompt: "System Error 58 has occurred.
4. Event Log: Browser error 8032. The browser service has failed to retrieve the backup list too many times on transport DeviceNetBT_Tcpip_{06ECF93A-1B89-4FF4-923E-F3302EF95FE1}. The backup browser is stopping.
Between our hosting and a customer we have an extended vlan, traveling on a fiber, between two cisco 3560 switches.The thing is, that we want to create one or more vlans inside that extended vlan, in some way if possible?
View 3 Replies View Relatedi have a 7201 router with NPE-G2. i have a design which i have the option to send all the traffic through a GRE tunnel or a L2TPV3 tunnel.which method is more CPU consumption ?
View 1 Replies View RelatedI am using a Cisco RV110W (Firmware 1.2.09) in a branch and I would like to create a VPN Tunnel to another site that has a Cisco RV042 (firmware v4.2.1.02)
What would be the correct Configuration? the current configuration I am using is
in the RV042 i am using
Check Enable
Local Group Setup
Local Security Gateway Type : IP Only
IP Address : RV042 Pulbic IP address
[Code].....
Environment :linksys wrt300n v1.1 which can have ddwrt-mega. Willing to tunnel all lan's outbound traffic through an ssh tunnel.
View 2 Replies View RelatedThere are a few situations were I'd like to be able to use the locally configured account on a device but still have ACS in place.I want to complete this WITHOUT adding the locally configured account into ACS.I have tried setting the advanced option under Identity for if an account is not found to "Continue" however this causes the account to be allowed as long as a password is typed (any password, as long as its not blank).
View 2 Replies View RelatedI got an ASA 5510 system currently in single context mode, with CSC SSM installed. Single ISP uplink to internet, no VPN. And now customer would like add another ISP uplink, without invest another box for HA.What come across my mind is make the current box into multi context. There's some area i need to concern and also need yours perspective on it.
Question 1: For making the firewall into multi context, am i need to do it from scratch, issue mode multiple command. Then rebuilt the current production config into one of the context, then another context meant for the new IPS uplink, and one admin context?
Question 2: For CSC -SSM licensing requirement, model ASA 5510 with security plus license is able to support 2 context. So if i split my firewall like what i mention in question, what exactly number of context do i own (admin, context A, context B)?
Question 3: For CSC-SSM module in multi context mode, so the management port of CSC SSM must attach at admin context?
Question 4: After configured all the policy and traffic to scan, how exactly i should do in order apply this policy to the interface? Should i only enable at admin context, then firewall service-policy rules, and apply it global, OR should i also do the same action on context A and Context B?
We have recently converted 1 Cisco Lightweight AP 1041 to Autonomous mode for site-survey purposes. We now want to convert it back to lightweight mode.
View 1 Replies View RelatedI received the following info from Cisco's TAC and wanted to inquire further before I start reconfiguring the switch:
In a redundant Sup-6E setup, the following configuration is supported :
- 1 TenGig uplink on Active Sup and 1 TenGig uplink on Standby Sup
- 1 TenGig uplink on Active Sup and 2 Gig uplinks on Standby Sup
- 2 Gig uplinks on Active Sup and 1 TenGig uplink on Standby Sup
- 2 Gig uplink on Active Sup and 2 Gig uplinks on Standby Sup
If you invoke shared backplane mode, the following configuration can also be supported:
- 2 TenGig uplinks(blocking) on Active Sup and 2 TenGig uplinks on Standby Sup
- 2 TenGig uplink(blocking) on Active Sup and 4 Gig uplinks on Standby Sup
- 4 Gig uplinks on Active Sup and 2 TenGig uplinks(blocking) on Standby Sup
- 4 Gig uplink on Active Sup and 4 Gig uplinks on Standby Sup
Here's the command and information about the "shared-backplane" mode :- [URL]
Currently, we have 2 SUP 6-Es(Module 5 - Active and Module 6 - Stand-by) setup in a redundent mode. I am planning on changing the redundent mode to the shared backplane mode so I can use 2 TenGig converters to uplink 2 access-switches. We purchased 2 TenGig converters and here is how I am planning on using them:
1- One will be used to uplink to two 3750 switches(stacked)
2- One will be used to uplink to a 2960 using a Gig SFP
My questions are:
1- Do I have to install the 2 TenGig converters(4-Gig Uplinks) in the same Module? Or can I use one one in module 5 and the second one in module 6?
2- Will changing the redundant mode to the shared backplane mode require rebooting the switch or disrupt the funtionality of the other linecards?
How can we know that 6500 and 7600 series switch and router are running in native mode or in hybrid mode.
View 2 Replies View RelatedI am not able to connect to any webpages in normal mode, even after restarting i still have the same problem [However it works in safe mode with networking]. The network connections show that it is connected and the signal strength is excellent. I then have to keep restarting the laptop like 3 to 4 times and it works. Its kind of frustrating to keep doing this all the time and besides i am scared by restarting the laptop so many time can harm it.
View 1 Replies View Relatedi got a Dir-655 router and Dell 1501 wireless -N mini PCI card (802.11 bgn compliant). Router was set to mix mode but my desktop Dell XP8300 can connect only till G mode.
1) I search on web and some said that i need to set my router to N mode only for my desktop to connect to N mode. IS THIS SOLUTION CORRECT??
2) Another issue was my sis got other old brand latop which can only connect to B mode, if i set to N mode only, she won't be able to connect it right?
Is it possible to create a crypto IPSec VPN tunnel between A Cisco c831 and a Pix 501e using a back to back set-up with a cross-over cable?
View 4 Replies View RelatedI have my Router, not asa, with IOS Easy VPN Server established. If I use split tunneling my clients can access the net all day long and access hosts and resources over the VPN on the other side of the network as if it were plugged into the lan. The hard part I cant figure out is how to force tunnel. I want all internet access to go through the router and not to split tunnel in addition I want to retain the ability to access local resources as if I were plugged into the LAN. I have security reasons for doing this and I am not worried about a little extra load on the router. Let me know where to start looking. I can provide configs if necessary. If I do be warned I am trying to learn what all this nifty Cisco Config Pro GUI can do so my config is gonna be full of all kind of stuff that is messy. I wont post unless asked.
View 1 Replies View RelatedHave a lab in which I am trying to configure a VPN tunnel between an ASA5520 (running ASA ver 8.0(2)) and a router (3725 running C3725-ADVENTERPRISEK9-M) - see pic below for topology.
View 8 Replies View RelatedI have a problem with ip-sec lan to lan tunnel
Location A ASA5505 192.168.100.0/24
Location B ASA5510 192.168.58.0/24
I created a ipsec site to site vpn Also create the nat exempt rule Now i have also a second interface on Location B with subnet 192.168.100.0/24 Now can i access from location a the devices on location b But when i wil connect from location b to location a i get no connection i think that the asa the traffic not send over the ipsec tunnel but it keeps in the asa?
is there a way in LMS 4.0 to generate a notification when a VPN tunnel drops on an ASA 5500?
View 1 Replies View RelatedCan i use at one site ASA 5520 and another site Router to configure VTI tunnel with OSPF routing?
View 1 Replies View RelatedI have a Cisco 819 router and it's the first time I've configured any Cisco product. Starting from scratch, I have managed to get 3G working and the VPN to connect but so far no packets can route down the VPN tunnel (the other side is openswan/shorewall on CentOS5).I've been pawing over lots of guides and forum discussions but seem to be a bit lost. I suspect I'm missing some access-list definitions but don't really know how to go about it. I want the network behind the Cisco 819 (10.x.x.0/20) to be able to access the internet through the interface Cellular 0 but also the VPN remote network (192.y.y.0/24)When I ping from the other (non-cisco) end I see on the Cisco 819.
View 9 Replies View Relatedi got a person who connect with vpn on a adsl connection to the corporate network.this person is using cisco ip phone on his remote location and i did configure the ASA 5505 to priorize voice over data.i still get voice skips when the remote pc is uploading data to the corporate network...what i've done is :
1.with asdm i did create 2 priority queues one for inside (queue limit 2048 trans ring limit 512) and outside (queue limit 2048 trans limit 256)
2. with the service policy wizard i did create a global service policy (all interface) and a traffic class for dscp 46 ef and on qos tab i did check the "enable priority for this flow"...
3. When using the phone, i clearly see that packets are growing on the LLQ queue (show priority-queue statistics)
4. i still get voice skips when uploading data to the corporate network... upload bandwidth is about 800k for upload the pc and the phone is on the same subnet