I m trying to make the vpn session using m GRE tunnel between cisco 891/k9 and 1841 router.. there is the fixed ip add with the 1841 router, and another one doesnt have the static ip from the ISP, In this case, im going to use DMVPN, The problem is , after completing the configuration, the tunnel inteface of the 1841 router will be seen like this.
-status: reset
-protocol: down
I can ping across the tunnel from the pc's on either end of the tunnel, but I can't ping across the tunnel from the routers. If i ping using the source command using the LAN interface, the ping is successfull.
The reason i need this is for the remote router to be able to lookup the head office server for dns wins and ldap.
I have created the tunnel interface on cisco 1841 router. The tunnel is up but can't ping to it's interface ip, the ping drops.
R1#show ip int brief
Interface IP-Address OK? Method Status Protocol
Tunnel10 10.10.10.1 YES manual up up
[Code]......
We have configure a L2L vpn between Asa and 1841 router. We are facing this issue.The tunnel is not getting up from the 1841 site never. When we are trying to generate traffic from the ASA site the tunnel is up and we can see decryps and encryps packets.
Router 1841 Config:
crypto isakmp policy 100
encr 3des
hash md5
authentication pre-share
group 2
crypto isakmp key * address 213.249.XX.XX
[code].....
I need to work with the full tunnel feature of the IOS SSL VPN using a Cisco 1841. Here is what I see...
-I login to the portal page and click the "Start" button for "Tunnel Connection (SVC)"
-Security Alert message "This page requires a secure connection which includes server authentication. The Certificate Issuer for this site is untrusted or unknown. Do you wish to proceed?" I click yes.
-Anyconnect says "Please wait while VPN connection is established"
-Anyconnect error "The certificate on the secure gateway is invalid. The VPN connect will not establish"
We are currently experiencing a problem on an IP SEC VPN tunnel that has all of us here completely stumped. We are hoping that one of you experts out there will be able to assist. Here are some basic details:
NETWORKS
An IPSEC site to site tunnel has been built between the two sites on different networks.
PIX 515E - MAIN SITE
Network 172.16.0.0/24
CISCO 1841 - REMOTE SITE
Network 172.16.99.0/24
ISSUE
All traffic flows over the VPN from the 172.16.99.0 network in the direction of the Pix, such as RDP, SIP etc. Pings will go in both directions across the tunnel. Other than the pings most traffic will NOT flow over the tunnel from the 172.16.0.0 network on the pix to the 172.16.99.0 network on the 1841. It would appear that something on the 1841 is blocking traffic coming in over the tunnel from the 172.16.0.0 network as we can not get a wire shark capture on a PC on the 172.16.99.0 network, other than the ICMP traces. Usually this is an access list problem but we have checked and double checked the configuration and can't see anything.
TROUBLESHOOTING SO FAR
1. Have tried inserting various access list changes to the tunnel on the 1841 to make specific reference to the 172.16.0.0 network.
2. Have tried various NAT entries.
3. Have removed and then recreated the VPN tunnel from a fresh start.
4. Have made the MTU 1400 on the inside interfaces on the Pix and the 1841.
The tunnel is fully up at all times and as we say can ping in both directions.
im trying to configure IpSEC over Gre tunnel, but the traffic pass unencrypted, i cant find why this is happening. Here are the confg of the two routers (1841)
OFICINA#sh run br
Building configuration...
Current configuration : 1281 bytes
!
version 12.4
service timestamps debug datetime msec
[Code].....
I have a 1841 router connected to an ISP (currently SDSL EFM 10Mbps through an ISP modem, the router and the model are connected with a FastEthernet interface). On another location I have a linux server.There is an ipsec tunnel (3des-sha esp) between the router and the linux server (actually done with a crypto mac).The router has a hierarchical QOS policy on the egress interface.When sending traffic from the network inside the router to the linux host without the ipsec tunnel, everything is working fine and throughput is correct.When sending traffic from the inside network to the linux host internal ip through the ipsec tunnel, some packets are lost and the traffic throughput decrease.When sending traffic through the tunnel in the reverse direction (from the linux host to the internal network), everything is fine.I looked at the QOS statistics and the dropped packets counters don't increase. I looked at the egress/ingress interface statistics and no packets dropped there.I lowered the MTU on the egress interface, but it didn't solve the problem. I played by sending various ping icmp packets size, but even small packets are sometimes lost.I tried to check the router CPU, but it seems relatively fine (<= 10%)I captured the traffic on both side, and I see the packets emitted, and then I can see that some of the esp packets of the corresponding side are not received, so it looks like the cisco router is the culprit. This 1841 router is running: 1841 Software (C1841-ADVIPSERVICESK9-M), Version 12.4(24)T4,How can I troubleshoot where and why those packets are lost?
View 0 Replies View RelatedI have a strange issue where im able to get an ipsec tunnel from tha cisco 1841 to a linksys/cisco RV016 for about a minute and ping/encrypt packets across the lin for about a minute before it goes down. I tried various configuration and it all results in the tunnel coming up for a minute then going down. I'm not sure if im hitting a bug and on which decide of if im doing something wrong.
RV016 firmware 2.0.18
cisco 1841: C1841-ADVENTERPRISEK9-M), Version 12.4(24)T
my config
no crypto isakmp default policy
!
crypto isakmp policy 1
encr 3des
hash md5
authentication pre-share
group 2
[code]....
I have an GRE Tunnel across my head office and remote site with multiple subnets using cisco 1841 routers.I can ping most of the devices on the remote side, but I can not ping certain devices.These devices respond to ping requests on the local LAN, but not through the WAN link. If I change the IP of device than it start responding. I am using same gateway and mask on these devices.The remote site is running classic STP on switches with distribution switch being the root bridge.
View 4 Replies View RelatedI have a setup where a spoke (cisco 1841) is sending a multicast feed to a hub (cisco 2951) via a DMVPN tunnel on the Internet. The feed arrives on interface fa0/0 of the cisco 1841 and is forwarded to the tunnel interface. It is about 160,000 kbit/s and 18 pps. This always looks the same:
cisco2951-1-hub#sh run int tu10
!
interface Tunnel10
description DMVPN TUNNEL
[Code]...
I'm trying to configure an IPSEC VPN + tunnel for multicast data. When the default gateway is set on the router (1841) it works fine but if I only set a route to the IPSEC peer via our gateway then the tunnel fails to come up. The end point is to a 3rd party. [code]
I found that if I add a static route for the tunnel destination via fa0/0, the public facing interface, the tunnel comes up..ip route 10.23.4.2 255. 255. 255. 255 FastEthernet0/0
and I can then ping the tunnel IP at the far end - 10.23.0.5.Why would that be? Is there a better way to do this without using a default route??
I have 2 Cisco routers , 1841 and 2811 , I need to setup site to site VPN , but i dont now some how it just does not seems to be working ,
Find attached the Configuration along with the
<----- 172.31.1.0/24----- DG:172.31.1.1>Cisco 2811<Dialer1 -----//Internet//----------Dialer1>Cisco1841---< DG:10.236.5.254-------------- 10.236.5.0/24--->
Find attached command executed on each router in the below order
1) show ver
2) Show run
3) show logging
4) show crypto ipsec sa
5) show crypto isakmp sa
Debugging enabled on routers are
1)Debug Crypto Isakmp
2) Debug Crypto Ipsec.
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 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 have 2 cisco 1841 routers the one is connected to my local network and the other is the stub router and it only has 2 fastethernet interfaces. fao/1 connected to the local network and fa0/0 connected to the internet and to the other router. How can i configure NAT on the fa0/0 which is sharing the internet and local network
View 1 Replies View Related1841 & 3845 router. We send 30 GB data on 100 Mbps link. First time we use 3845 router for sending the data and 47 Min are required to complete the data, during this link utilization was 100%. After that we send same data through 1841 router & 46 Min are required for the same. Only difference in data transfer is CPU Utilization of 1841 router goes 30% & 5 % of 3845 router Can we use 1841 router instead of 3845 router ? .
View 2 Replies View RelatedI have got a cisco 1841 router. I need to do many nat. I have got a lots of virtual interface on this router. How many nat inside and outside does it supports ? Can I do more than one nat insdie and outside in different virual interfaces on the same single router.
View 2 Replies View RelatedA client was having some email issue and was requested to change the 1841's LAN and WAN interface MTU to 1400 bytes. i've used 'mtu' command but was rejected and got an error like to one attached. so i used 'ip mtu' instead to make the change.
What's the difference between the 2 commands and if this would achieve the said change. I've checked using the show interface it's still showing MTU of 1500 bytes.
I want to connect my office network through anyconnect software and want to have the access of the whole network at my office, so that I can feel that I am at office. I have got 1841 router at my office. Is it possible to do VPN with anyconnect on 1841 router. Which IOS is required for SSL vpn ?
View 1 Replies View RelatedWe have 1841 router (Cisco IOS Software, 1841 Software (C1841-ADVSECURITYK9-M), Version 12.4(9)T1, RELEASE SOFTWARE (fc2)), currently the router up and running on "c1841-advsecurityk9-mz.124-9.T1.bin" and when we try to upgrade the IOS with "c1841-advsecurityk9-mz.124-24.T7.bin" its not taking the new IOS. [code]
View 9 Replies View Relatedwhen I start the router , I can't enter the IOS , and it enther the ROMMON mode , the error display probably is : the flash is invalid.I want to import an new IOS into the flash, but it says the space is not enough.how I confirm the flash is broken?It's any other ways to solve this problem except to change the flash?
View 2 Replies View Relatedsetup a vpn server cisco.
device cisco router 1841 [URL]
In my company, we have two Internet connections, one for VPN and the other for emails and browsing. I have Cisco 1841 router with dual ADSL links, and also it's conntected to ASA and the other PIX. through one physical interface (vlan 1and vlan 2). The PIX firewall is connected to users, and the ASA is for VPN only.How can I seperate the traffic is going for emails and browsing and the vpn traffic. I have got to the point, that the router is configured for both ADSL connections, and I also configured the access-list and route-map in the router, the thing is when both ADSL configured together none of them works.
View 1 Replies View Relatedi am very new for WAN failover configuration so how to configure cisco router 1841 with two WAN link.
View 2 Replies View RelatedI have a 1841 Router running C1841-ADVIPSERVICESK9-M ver 12.4(12), is this IOS VPN capable, if not what IOS would I need to run a VPN?
View 2 Replies View RelatedI have a problem with 1841 router - It wont't boot up and there is a message
Correcting primary nv_flash
I have a Cisco 1841 router equipped with a serial interface and an ISDN BRI interface installed.The router has stopped suddenly responding and no display is beig obtained when trying to access the router through the console port.I have check the router LEDs and they display the following:
SYS PWR - It is showing solid green which means the router is receiving power, and the internal power supply is functional. It is not blinking green as is normally the case when the router is rebooted.
SYS ACT - It is showing solid green. It should normally be blinking green showing that the system is actively transferring packets and monitoring internal activity. CF - It is showing solid green. It should normally be off indicating that the CompactFlash memory card is not being accessed or be blinking green showing that the CompactFlash memory card is being accessed.
I have even replaced the CompactFlash memory with another one and removed the two WICs installed but the router still fails to initialise properly and respond through the console terminal program. how the router can be further troubleshooted or if it can be repaired?
I wanted to know how many sodium memory slots the 1841 Routers have so i can upgrade to more then 128mb of DRAMI want ideally 256+on the Cisco website in the diagrams they dont say if it has 1 or 2 slots
View 8 Replies View RelatedCan I configure a cisco router 1841 to block specific sites?
View 4 Replies View Related
