Cisco VPN :: VPDN On 877 Authentication And Encryption
Jun 29, 2011
I have a Cisco 877 router at home, and I'm trying to configure it to act as a VPN server in order to be able to connect to my home network when I'm outside; I want it to work with standard Microsoft VPN client software (which supports PPTP and L2TP).
This is the output of the "show version" command:
Cisco IOS Software, C870 Software (C870-ADVIPSERVICESK9-M), Version 15.0(1)M, RELEASE SOFTWARE (fc2)Technical Support: [URL] Copyright (c) 1986-2009 by Cisco Systems, Inc.Compiled Wed 30-Sep-09 08:42 by prod_rel_team
ROM: System Bootstrap, Version 12.3(8r)YI6, RELEASE SOFTWARE
The router has quite a basic setup: a single username with privilege level 15, a single VLAN comprising all four Ethernet ports, an ADSL connection to my ISP, an internal IP address of 192.168.42.1/24, an external IP address assigned by my ISP, NAT enabled.
This is my current configuration (stripped of non-relevant or private information):
service password-encryption
aaa new-model
aaa authentication login default local aaa authorization console aaa authorization exec default local
aaa session-id common
[Code]...
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Aug 14, 2011
Is there a way to configure client/user to AP authentication without using encryption for joining to an wireless network? What we need to do here is protect network access at our hotspots by enforcing a password to get connected. The other part is making it compatible with every possible device so we need to have encryption off. We have a mixed environment at this time until everything is upgraded. Aironet 1200 series and some new Aironet 1142 models. No controller, all standand alone AP's
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Jul 18, 2012
From what I've read, it doesn't seem possible to use Web Authentication and obtain encryption unless using a Radius server.
I have a client asking for web auth, encryption, and ldap connection to their AD servers.
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Sep 14, 2012
I'm using the Express Security Set-up tab to configure an Aironet 1142 (stand-alone) access point with EAP.
Objective is to make it a RADIUS client and have laptops authenticate through this access point to a Windows 2008 NPS (Network Policy Server) using computer (machine) certificates - EAP-TLS.
When I select "EAP Authentication" under the "SSID Configuration" I was literally floored to see mention of WEP encryption (a security joke) and no possibility to prefer some variant of WPA (well, apparently not with EAP).
WPA2-Enterprise is what I've selected for "Authentication" and "AES" for encryption in Group Policy (so the laptop clients automatically connect to the access point).
WEP? I bought a Aironet 1142 access point for WEP encryption? How can I configure this securely?
These are currently configured settings as displayed under the "SSID Table" heading:
SSID - "MYSSID"
VLAN - none
Encryption - WEP Mandatory !!!
[Code].....
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Sep 15, 2011
I been working with PPTP server on cisco IOS since a log time ago. Up to release 15.0 seems is just stopped working. I mean external users can log in the pptp but after logged in there no traffic flow. A simple downgrade to 12.4 solves the problem.
But now i have all my infrastructure with ISR2 2901 and all IOS are 15.
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Apr 17, 2011
I have configured VPDN/Dialer on router 2600 to connect to our ISP via Fibre Optics modem but its simply not connecting. The router consists of 3 interfaces
- Inter fa0/0 = 10.0.0.6 255.255.255.248 (LAN 1)
- Inter fa0/1 = IP is unassigned (interface connected to Fibre Optics modem)
- Inter e1/0 = 192.168.200.1 255.255.255.0 (LAN 2)
The connection is planned to run like this:
LAN1 & LAN2 (Inter fa0/0 & Inter e1/0) <-> Inter fa0/1 <-> Dialer1 <-> Modem <-> ISP <-> Internet.
The Modem will just server as mere "modem" or just a bridge, as the actual routing is configured on "dialer interface" in the router.We're not using a dedicated IP address to link to ISP but a public one. After configuring the interfaces, VPDN, dialer interface, NAT, access-list, ISP's assigned username/password, etc I'm simply not connecting to our ISP, even when I do a ping. The ISP's IP address which we're pinging is 118.23.8.80 What am I missign out? How do I connect the dots here?Below are the results for Running config, Ping, and Debug:
Running Config:
Router1#show running-config
Building configuration...
Current configuration : 3083 bytes
!
! Last configuration change at 17:39:43 Sun Apr 17 2011
!
version 12.3
[code]....
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Feb 11, 2012
We have a 3745 LNS router, currently there are less number of users connected.when a user dials request authenticated and one virtual-access interface is formed in LNS router.Now the user is disconnected the vpn and connected to VPN again in this case, whether the user is connected to the same virtual-access interface which was assigned before disconnecting or different virtual-access interface is created.
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Mar 3, 2013
I need to use a Cisco ASA 5505 on a BT Openreach connection, The configs that I have ben using are below -
interface vlan2
nameif outside
security-level 0
[Code]....
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Dec 25, 2012
I want to configurate Vpdn protocol PPOE but i can not write protocol ppoe under vpdn group name on cisco 2811. cisco 2811 iso is 12.4 T adventurer and i upgrade it 15.1 advansecure but problem is still.
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Aug 16, 2011
I have VPDN running on our Cisco 1921 router running 15.2(1)T. Previously I was using Cisco 2801 router running 12.4(24)T4. I copied the config from the 2801 to the new 1921 router before replacing the router but now the VPDN isn't working.
Basically the users can connect and authenticate to the VPDN, but once they get the IP 192.168.12.10-20 IP, they can't access the internal servers (i.e. 192.168.12.120).
Is there any bug in the 15.2(1)T relating to VPDN?
Here's the VPDN section of the config:
vpdn-group TESTVPDN
! Default PPTP VPDN group
accept-dialin
[Code].....
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Jul 28, 2012
Where can i find my wep encryption key?
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Nov 30, 2012
Is it possible to have a 64 bit and 128 bit encryption key activated on the same router at the same time - one for laptop and one for wireless printer
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Jun 23, 2012
I need to locate my encryption key.
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Feb 3, 2012
Is 3DES on ISAKMP considered to be secured for your average site (other options are AES/DES)? I'd imagine AES should be much stronger but what about DES, is that considered adequate or broken? Is there any proof of concept attack against 3DES on ISAKMP (or ISAKMP in general)?
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Oct 7, 2011
how IPSEC VPN works but i hit a stumbling block understanding symmetric encryption keys.Here is my understanding about the process
1.Peers will negotiate plocies
2.Authenticate using pre-shared or certificates
3.Exchange DH Public Keys
4.Using Public keys encrypt symmetric key and exchange the same key which will be useful for communication
5.maintain sessions
But when we are configuring we will define encryption keys in isakmp phase and ipsec transform set ,i thought we will use the same encryption key for both management and data communication in fact i thought management phase is to give us a securely exchanged encryption key for the data tunnel.But we can use 2 different encryption keys in 2 phase i am bit confused.
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Oct 2, 2012
A wlan on my controller is configured for WPA2, AES encryption and a PSK. A vendor will supply me with a wireless device for this wlan. The vendor asks if we use AES 128 or AES 256. I had always believed we use AES256 but I can't verify this. How can I verify this to the vendor?
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Jul 2, 2011
I have a Cisco 877 router and I configured it to act as a VPN server, supporting both PPTP and L2TP VPNs. I can succesfully connect to it from Windows computers using the built-in VPN software.There is only one problem: when using a PPTP VPN, encryption doesn't work. If I configure the client to require encryption (default setting), the connection fails with an error about the remote endpoint not supporting it. If I remove the encryption requirement, the connection succeeds. I've also tried tweaking the encryption settings (40/128 bits), but this didn't work either. [code]
The router's IOS version is 15, and it fully supports encryption. The strangest thing is, encryption is actually required in the router config; but not only the router doesn't seem to offer it... it also accepts unencrypted connections, which it shouldn't. It's like the ppp encrypt mppe auto required command is completely ignored.
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Dec 21, 2012
I've some VPN encryption method questions.Is it recommended to use different encryption algorithms for both VPN phases (phase 1 and phase 2)?I’ve read once that it is much secure to use different encryption algorithms for each phase.In my opinion, I would go for the AES256 algorithm in both phases. But maybe it is a better idea to use AES128 or AES192 in the first phase and AES-256 in the second phase… I don't know.After saying this, I’m also wondering about the best VPN encryption setup for a site-to-site VPN (IKEv2) when using a Cisco ASA like the 5510, 5520 or the 5515.Which encryption method is recommended for phase 1 and phase 2Which PFS / DH-group should be used (considering CPU load and security)
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Sep 13, 2012
the guy who set the key for WPA-PSK and another one for WEP left... Anyway we can figure out what the key was?
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Dec 5, 2012
I have two cisco airenet 1252 autonamous access point that are configured as point to point bridge. Now I want to confiure AES encryption or WPA2 using a pre-shared key however I do not see the option to do this . The only option I see under ciphers are:
wep 128
wep 40
TKIP
[Code].....
Is it possible to use either AES or WPA2 using a pre-shared key on the 1252 autonamous access point? preferably using the web interface.
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Mar 14, 2011
Due to network security audit we are interesded in encryption algorithm used for authentication of administrator and operators in Starent Networks ST40 Intelligent Mobile Gateway. To be more clearly, we need to know what type of hash is used for password storing when "showsecrets" command is omitted.
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Jun 20, 2011
I have 2 Cisco 2811 routers that are installed in different locations. I set up a tunnel connection between the two routers.
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Dec 3, 2012
I want to change my encrytion password-How do I do it?
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Dec 10, 2011
I have laptop, mac and xbox 360 all working, just got ps3 and cannot connect it, cannot find wep key for wifi 12 hours plus trying to get this done.
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Dec 26, 2012
How do I change my wi-fi password?
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Feb 3, 2012
attempting to connect a blu-ray player and it asks for encryption key for the network.
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Apr 25, 2013
I can't find information about two features in 1524PS and 1552E/EU:
1. Does it have WEP encryption ?
2. Does it have SNMPv3 protocol for monitoring and remote managing ?
I guess, that software is similar in both, so answer will be the same in 1524PS and 1552E/EU.
How to confirm this features in 1524PS ?
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Aug 16, 2011
We want to provide an end to encryption service using an ACE02 in a CAT 6509E. This is covered in the ACE config guide so should be OK. The issue is that we want to include traffic inspection using an IDSM2 so we need to seperate the decrypt and encryption stages and send cleartext traffic to the IDMS2. The Security and Virtualization in the Data Center pdf page 18/19 suggests that it might be possible. The design depicted there though is only doing SSL termination, then sending the clear text onto a WAF, and onto IPS but it does say end-to-end encryption is also possible.So in essence what we want to do is have traffic from clients destined for the server farm decrypted by the ACE and sent to the IDS. We then want the traffic to return from the IDS to the ACE to be encrypted and sent onto the server farm.
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Dec 14, 2012
I would like to know if I have only using IKEV2 to connect site to site VPN with Cisco 5505 device to connect few site. Which encryption method is better to choose with faster and stable IPsec encryption proposal,AES256, AES192, AES, 3DES, DES ?? which one is the best in IKEV2 site to site VPN tunnel?
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Jun 2, 2011
How does the implementation of encryption wep wpa etc in hardware cisco wap4410N ?
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Apr 27, 2013
I am truly struggling with the changes after 8.21. I am trying to get a VPN up between two sites. This is the B end, I am sure there are a bunch of problems in the other end too. Eg. the tunnel NAT does not have the right priority 1.when I establish the tunnel I get this:
3 Sep 01 2008 11:23:37 Tunnel Manager has failed to establish an L2L SA. All configured IKE versions failed to establish the tunnel. Map Tag= outside_map. Map Sequence Number = 1.
# packet-tracer input inside tcp 10.2.32.11 80 10.1.1.10 80
Phase: 1
Type: ACCESS-LIST
Subtype:
[code]....
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May 29, 2012
I am trying to setup a remote-access vpn (client device is an iphone or PC) on asa 8.0 with a transform-set without encryption and without hashing ( crypto ipsec transform-set noenc esp-null esp-none ). In this scenario, it does not work and all gives me "phase 2 mismatch" ...below is the debug of isakmp and ipsec.
i tried to change the transform set by using hashing without encryption (crypto ipsec transform-set myset esp-null esp-sha-hmac). it worked on the PC but not the iphone. my target is for the iphone to work.
ciscoasa# sh cryciscoasa# sh crypto isa sa
There are no isakmp sasciscoasa# ter monciscoasa# May 29 23:33:44 [IKEv1]: IP = 91.232.100.3, IKE_DECODE RECEIVED Message (msgid=0) with payloads : HDR + SA (1) + KE (4) + NONCE (10) + ID (5) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + NONE (0) total length : 741May 29 23:33:44 [IKEv1 DEBUG]: IP = 91.232.100.3, processing SA payloadMay 29 23:33:44 [IKEv1 DEBUG]: IP = 91.232.100.3, processing ke payloadMay 29 23:33:44 [IKEv1 DEBUG]: IP = 91.232.100.3, processing ISA_KE payloadMay 29 23:33:44 [IKEv1 DEBUG]: IP = 91.232.100.3, processing nonce payloadMay 29 23:33:44 [IKEv1 DEBUG]: IP = 91.232.100.3, processing ID payloadMay 29 23:33:44 [IKEv1
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Oct 22, 2012
I have a cisco asa 5510 running ver 8.02, when i navigate to "remote access vpn-> advanced->ssl settings" i could not see any available algorithms under encryption section. How can i add the encryption algorithm in? I need the encryption algorithm as i want to enable ssl authentication using cert on my asa interface.
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