Cisco VPN :: IPSEC Between Pix 515E And 1841 Router
Aug 4, 2012
We have set up a site to site IPSEC VPN between a Pix 515E running 8.0 (4) and an 1841 using static IP addresses at both ends. We used CCP on the router and ASDM on the pix to build the initial tunnels. Now the site with the router is changing to a Dynamic IP address from the ISP so we have set up Dynamic DNS to update the dynamic IP address.
The problem we have is that ASDM will not allow us to set a domain as the peer address, it will only accept an IP address. We think the solution will be to remove the static Crypto Map and replace with a Dynamic Crypto map on the Pix side. Our questions are simply; is this the best solution? can we edit the original static list or is it better to delete and make a new dynamic crypto map? Is there a short cut to change the config in command line? This is a live network so just want to check before we make changes on live kit.
View 4 Replies
ADVERTISEMENT
Jan 18, 2012
Currently I have a IPSEC VPN access to the PIX 515E using UDP, how to setup the PIX with IPSEC over TCP?
The OS version I am using is Cisco PIX Firewall Version 6.3(5)
I cannot type in command like isakmp ipsec-over-tcp port 10000Does it mean IPsec over TCP is not supported in this version?
View 3 Replies
View Related
Feb 10, 2011
I need support regarding IPSEC - VPN in 1841 Router? I had purchsed 1841 Router and i dont know how to check, whether supported for VPN or not?
View 4 Replies
View Related
Apr 17, 2013
I have a PIX-515E version 8.0(2).I have two remote sites connected to this PIX via IPSec tunnels.Each remote site can reach the local networks behind the PIX but I can not reach remoteSiteA from remoteSiteB.So,
10.30.8.254 SiteA <----- IPSec -----> PIX1 <----------------> SiteX 10.0.8.1
10.138.34.21 SiteB <----- IPSec -----> PIX1 <----------------> SiteX 10.0.8.1
SiteA can ping SiteX
SiteB can ping SiteX
SiteA can't ping SiteB
SiteB can't ping SiteA
If i do show crypto isakmp ipsec sa I can see appropriate subnets:
Crypto map tag: CRYPTO-MAP, seq num: 4, local addr: 203.166.1.1
access-list ACLVPN-TO_SITEA permit ip 10.138.34.16 255.255.255.240 host 10.30.8.254
local ident (addr/mask/prot/port): (10.138.34.16/255.255.255.240/0/0)
remote ident (addr/mask/prot/port): (10.30.8.254/255.255.255.255/0/0)
current_peer: 104.86.2.4
[code]....
Some log messages that seem to point to the problem...
Apr 18 2013 13:27:35: %PIX-4-402116: IPSEC: Received an ESP packet (SPI= 0xD51BB13A, sequence number= 0x21A) from 104.86.2.4 (user= 104.86.2.4) to 203.166.1.1. The decapsulated inner packet doesn't match the negotiated policy in the SA. The packet specifies its destination as 10.138.34.21, its source as 10.30.8.254, and its protocol as 6. The SA specifies its local proxy as 10.0.8.0/255.255.255.0/0/0 and its remote_proxy as 10.30.8.254/255.255.255.255/0/0
My question is really do I need to do anything funky to allow the traffic to pass between the two tunnels?
View 2 Replies
View Related
May 29, 2011
In my Cisco PIX-515E Version 6.3(5), I have a IPSec VPN tunnel and also to the same firewall home users connect through VPN client. I am unable to find a solution that allows my home users to connect to office network and again access the remote network through the IPSec tunnel.
View 1 Replies
View Related
Mar 25, 2011
i have 6 sites using tandberg visioconference system, each site have a cisco router 1841 configured with ipsec vpn, i have a 4 conference a week and my bandwidth is 2 meg, and when people are working we have a lot of problems and cut in our visio conference.
I have a big problem, i want to make a high level QOS priority to my TANDBERG visio conference system between my sites, the issues is that there is an IPSEC VPN in my cisco routers between those sites and as i know if the traffic is crypted we can not separate the packets or give higher priority to packets over anothers.
can i mark traffic in the lan interface and and make a high priority befors the packets go through the ipsec tunnel?
View 1 Replies
View Related
Nov 20, 2011
I want to establish VPN with GRE over IPsec. As ASA can't end GRE tunnels, I should pass it through inside to another 1841 router in datacentar network. Since datacentar is connected to internet via two wan links (separate ISPs) is it possible to establish two gre simultanous sessions between 1841 at branch office and 1841 at datacentar, one session per wan link at datacentar? That way, I need 8 gre separate sessions (tunnels) at datacentar 1841 router. Is it supported?Is GRE passthrough works like regular port forwarding or it is something that ASA handles with some special commands?
View 1 Replies
View Related
May 28, 2012
I am now having trouble to buil a vpn ipsec on an adsl link, my architecture is as follow:
[code]...
whith this output, debbuging seems very difficult. see attached my configuration on router 1841
View 3 Replies
View Related
Mar 17, 2011
I have a data center with virtual desktops and other shared infrastructure serving remote sites, some of which are connected to the data center with GRE over IPsec.
IP address management including DHCP is centralized in my architecture, but I simply cannot figure out how to relay DHCP requests through GRE over IPsec to my DHCP server cluster. I am working with Cisco 800 series VPN peers, and the VPNs are terminated either on a 1841 or a Juniper SRX. Everything else is just fine and dandy, but DHCP is not forwarded across the GRE tunnel.
As a workaround I am forced to use local DHCP pools on the VPN peers, which is extra work from a management point of view, and also precludes static IP address assignment where a local DHCP pool is in a VRF. My LAN devices are mostly thin clients, so I don't care if DHCP stops working when the WAN link fails. As such local pools have no upsides, they are only a tremendous hassle.
My config is very basic, public WAN in global routing table and WAN + GRE tunnel in a VRF. NAT is not used. Here are the DHCP-related configs I have tried:ip helper-address on the LAN gateway, both with and without ip forward-protocol udp bootpcip dhcp pool with relay options configured
In every case, I can see the UDP broadcasts hit the LAN gateway, but relayed packets never arrive at the other GRE tunnel endpoint let alone the DHCP server.
View 4 Replies
View Related
Oct 23, 2012
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.
View 7 Replies
View Related
Jul 15, 2012
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].....
View 4 Replies
View Related
Oct 23, 2012
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 Related
Aug 9, 2011
Network Setup
===========
2 Site to Site VPN tunnels has been established, it is a hub and spoke topology. The hub is ASA5520 and the 2 spoke are a 1841 and 1801 router. The tunnel is able to pass traffic, it's a full tunnel VPN.The tunnel randomly disconnect for no reason. When I check the logs I can see some errors :
%CRYPTO-4-RECVD_PKT_INV_SPI: decaps: rec'd IPSEC packet has invalid spi for destaddr=x.x.x.x, prot=50, spi=0x5F822579(1602364793), srcaddr=y.y.y.y
%CRYPTO-4-IKMP_NO_SA: IKE message from y.y.y.y has no SA and is not an initialization offer
The actual address have been replace by x.x.x.x and y.y.y.y. I frequently have to peform clear crypto isakmp on the spoke routers to revive the VPN tunnels. Is there a way the tunnel can be re-establish again without manual intervention?This keep happening on a random basis and I have living with it for years. I have looked at cisco website troubleshooting tips and but no luck in finding out how to resolve it.
Below is my config on one of the spoke router:
==================================
Cisco IOS Software, C180X Software (C180X-ADVIPSERVICESK9-M), Version 12.4(24)T3, RELEASE SOFTWARE (fc2)
crypto isakmp policy 10encr 3deshash md5authentication pre-sharegroup 2crypto isakmp key @@@@@@ address y.y.y.ycrypto isakmp invalid-spi-recoverycrypto isakmp keepalive 30 periodiccrypto isakmp nat keepalive 20!!crypto ipsec transform-set tset1 esp-3des esp-md5-hmaccrypto ipsec df-bit clear!crypto map ipsecvpn 10 ipsec-isakmp
set peer y.y.y.yset transform-set tset1match address vpn@spoke!archivelog config hidekeys!!!!!interface FastEthernet0ip address x.x.x.x 255.255.255.248ip nat outsideip virtual-reassemblyduplex autospeed autocrypto map ipsecvpn!interface FastEthernet1!interface FastEthernet2!interface FastEthernet3!interface FastEthernet4!interface FastEthernet5!interface
[code]....
View 4 Replies
View Related
Feb 23, 2011
I have 3 sites. Each site has a Cisco 1841 as its WAN router with a 10Mb direct internet access circuit connected to Fa0/0. The sites are then connected to each other via site-to-site IPSEC VPN. (The LAN switches in use at each site are Cisco 3750 series) [code]
Now, Site A has already been set-up with VoIP telephony. The plan is to extend this to the other 2 offices.Auto QoS has been set-up on the switches and data and voice VLANs created in the same way for each office.
how should/do we extend the QoS for the voice over the WAN to ensure voice quality remains for site to site calls. And what special considerations do we have to make for it being IPSEC VPN connectivity between the sites? The actual IP telephony system itself is being set-up by a 3rd party and not a lot of information on their requirements has been forthcoming so far – essentially all we have really been told is that they would like us to “reserve” a certain amount of bandwidth for the voice traffic between each site.
View 3 Replies
View Related
Apr 23, 2013
I 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]....
View 3 Replies
View Related
Dec 29, 2012
Any good vpn config for a router to allow vpn connections from Android phones using L2TP-IPSEC? Router is an 1841 running most current IOS ver 15.1.
View 1 Replies
View Related
Feb 2, 2011
I am exploring the possibility of having Cisco 1841's (or higher) at multiple sites. Each router will support 2 x ADSL connections (HWIC-1ADSL cards). My plan is to set up a DMVPN Full Mesh Tunnel on the first ADSL interface on each router and have RIP route these subnets, this will be for my Voice traffic only.
Further more I would like to set up a second IPSEC VPN tunnel between the head site and all other sites (the sites do not require direct communication for data purposes). This will route via static/weighted routes.
Any similar set up or sample configurations?
whether or not you can also run parallel DMVPN full mesh tunnels on a Cisco 1841 as this would be the other option.
the only restrictions are that the ADSL links cannot be upgraded to SHDSL etc.
View 3 Replies
View Related
Aug 22, 2011
I need to redo the configuration on the new one?
View 11 Replies
View Related
Nov 18, 2011
in my lab environment, I have a site-to-site VPN between a Pix515E and Cisco 3845 router, using AES-256/DH-5/SHA for isakmp and AES-256/SHA/PFS group5 for the site-to-site VPN, I can only push about 26Mbps IPSec traffics (tested with Iperf). CPU on the Pix515E is running at 96% utilization
Now if I replace the Pix515E with another Cisco 3845 router, I can push about 100bps. Why such a big difference between the data sheet and actual real world
[code]...
View 1 Replies
View Related
Dec 29, 2011
Me to a 2951 router with fireawall featureset. Ive begun to move the ACLs that where in the pix. However some of the rules are allowed to be typed in bur when i look at the ACL afterwards they are not what i typed in.
View 2 Replies
View Related
Apr 29, 2013
I tried any type of combination and just couldn't make it works. Only PPTP works well. Whether Apple iOS IPSec VPN is supported or not?
View 11 Replies
View Related
Apr 8, 2011
I 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 Related
Apr 26, 2011
1841 & 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 Related
Nov 11, 2012
I 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 Related
Aug 28, 2011
A 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.
View 6 Replies
View Related
May 16, 2011
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
View 1 Replies
View Related
Mar 31, 2012
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 Related
Dec 2, 2012
We 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 Related
Feb 13, 2011
when 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 Related
Dec 24, 2012
setup a vpn server cisco.
device cisco router 1841 [URL]
View 2 Replies
View Related
Oct 20, 2012
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 Related
Jun 30, 2011
i am very new for WAN failover configuration so how to configure cisco router 1841 with two WAN link.
View 2 Replies
View Related
Aug 24, 2011
I 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 Related
