Cisco Security :: 877 - Configuring Router And VPN Clients Using PPTP And MPPE
Oct 21, 2007
I need to establish PPTP VPN to 877 modem/router from Internet.The VPN client is a Windows XP standard VPN client.I configured the router basing on the document: "Configuring the Cisco Router and VPN Clients Using PPTP and MPPE". url...And... It works quite nice BUT only when I use PAP protocol to authenticate the user.When I try to use 'MS-CHAP' or 'MS-CHAP v2' I get error 691 on the client side("Access was denied because the username an/or password was invalid on the doman.") [code]
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May 15, 2006
Can I configure a PIX (515), as PPTP client to establish a tunnel with non-Cisco PPTP server ? Can my PIX initiate this type of connection ?Today, I use a PC with PPTP client to establish this and I want replace this with a PIX and I don´t want depends of a PC.
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Oct 23, 2011
I have a trouble with PPTP VPN between Windows clients and Cisco 2921 router with RADIUS (IAS) authorization. When I try to connect to Cisco 2921 from Windows 7 using MS-CHAP v2 I receive error 778: it was not possible to verify the identity of server . Then I use PAP - everythig is OK. On Windows XP the same situation.
Cisco config:
version 15.0
service timestamps debug datetime msec
[Code].....
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Mar 6, 2011
We have a Cisco 891 with this configuration belowI got several computer on my lan that needs to connect to an external Windows server with pptp. The windows server is not mine but it works. The clients are using the windows connection manager. We can connect to the windows pptp server for hours sometimes.But, sometimes we can just connect about 3-4-5 minutes, and it auto-disconnects. Is there something wrong in my configuration ? I heard the cisco router is messing with the keepalive or the connection state.It seems to happens when i have more than 5-6 clients connected at the same time on the same server. I got theses mesages : Link to VPN failed. OR ERROR 619 OR ERROR 651Before, I had a RV042 and it worked like a charm. We were 10 on the vpn server and it was working. I dont see why Its not working now.
version 15.0no service padservice tcp-keepalives-inservice tcp-keepalives-outservice timestamps debug datetime msec localtime show-timezoneservice timestamps log datetime msec localtime show-timezoneservice password-encryptionservice sequence-numbers!hostname Quantis891!boot-start-markerboot-end-marker!!aaa new-model!!aaa authentication login local_authen localaaa authorization exec local_author local !!!!!aaa session-id common!!!clock timezone PCTime -5clock summer-time PCTime date Apr 6 2003 2:00 Oct 26 2003 2:00!!!no ip source-route!!ip dhcp excluded-address 10.10.10.1ip dhcp excluded-address 10.1.1.201 10.1.1.254!
[Code] .....
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Jul 31, 2012
Is there a way to configure RV180 to allow PPTP clients to route Internet traffic via its own internet connection?
I.e. supporting these client options: "Send all traffic" (Mac/iOS), "Use default gateway on remote network" (Windows).
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Nov 2, 2011
RV082 Firmware Version 2.0.2.01-tmRV082 Firmware Version 2.0.2.01-tm
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Apr 5, 2013
I am facing a problem when configuring the ipsec vpn on my 7200 router. [code]
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Jun 20, 2011
I have a SSL certificate from a third party that is showing under the Identity in ADSM, howerver the audit scan of the firewall shows that the SSL Certificate Signed with an unknown certification Authority. I have installed the Intermediate Primary and Secondary Certificate from the third party under the CA Certificate of the ADSM however when I verify the SSL certificate it still shows as self-signed. What other steps do I miss. I have attached some screenshots.
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May 26, 2012
I have a 2811 ISR configured to provide the following services to my network:
Internet access to LAN users Cisco Call Manager ExpressSite-to-stie VPN to 3rd party networksVPN server to provide VPN access to remote usersSecurity Zone configurationsStatic NAT configurations Now I recently just got the ASA5510 device and I am not sure how to go about with the setup, whether to put the ASA in between the internet and the ISR (Internet - ASA - ISR - LAN), or put the ISR in between the internet and the ASA (Internet - ISR - ASA - LAN)? While i know I can move most of the config unto the ASA, i know that the CME cannot be moved, hence I would like to do the setup such that users on the network still have access to CME.
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Jun 18, 2012
I have a ASA5505 and it has a vpn set up. The VPN user connects using the Cisco VPN client. They can connect fine (the get an ip address from the ASA), but they can't ping the asa or any clients on the network. Here is the running config:
Result of the command: "show running-config"
: Saved
:
ASA Version 7.2(4)
!
hostname ASA
domain-name default.domain.invalid
[code].....
what I need to add to get the vpn client to be able to ping the router and clients?
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Apr 19, 2013
I have a Cisco home rack lab which is behind my ASA 5505. I use my ASA to connect to the internet. My situation is I travel a lot for work, and I am unable to do my labbing practice. I am pretty new to ASA and would like to do a port forwarding to access my access server which is connected to my Cisco routers and switches.My network topology is this: (internet)-------(ASA 5505)----------(3550)-------(CM32 Access Server)----------(Cisco Rack) This is how I setup my remote access:
Code:
ssh 0.0.0.0 0.0.0.0 outside
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Feb 1, 2011
I have 4 desktops cat5 to Dlink DIR 615 router. All work fine. Any wireless clients, laptop or netbooks, see the desktop computers for a while then disconnect somehow. All machines can see the Internet through the router at all times. The desktops disappear from the laptop/netbooks but the wireless machines can be seen from the desktop computers but clicking on them gets 'Access Denied' message after a wait.3 desktops = XP, 1 98SE. All laptop/netbooks = XP
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Jul 30, 2011
I have an hp envy 17, running windows 7 64-bit, and I'm having a problem getting a program, KalemSoft Media Streamer, to work on my laptop, so I can stream my laptop media to my HP TouchPad. I traced the problem down to windows firewall: When windows firewall is disabled, I'm fine, but I want it to work while it's enabled as well. I tried to add it to the list of exceptions but nothing seems to work. I've attached a photo of the error message, i can change the base data and control TCP ports for kalemsoft (currently 5030 and 5031.
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Aug 25, 2012
I'm trying to configure 1700 K9 router to act as PPTP client and connect to Microsoft VPN server (in order to enable all clients on LAN to seamlessly access host on remote location). [URL]
I'm using GMS3 to test everything in lab environment. I managed to connect to Microsoft VPN server but the connection drops immediately. Below is debug info from router R1 (router R2 just simulates host on LAN) and configurations for both routers. The only clue I got from debug is that immediately before closing connection there's a message "CCP: Failed to negotiate with peer"...
R1#sh debug
PPP:
PPP detailed event debugging is on
MPPE Packet Details debugging is on
[Code].....
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Mar 19, 2013
Region : UnitedStates
Model : TL-MR3020
Hardware Version : V1
Firmware Version : latest
ISP :
I have problem to get pptp working. I setup pptp VPN server on my home router and configured pptp dialup on my laptop. If my laptop connect to internet directly, I am able to connect to home router via PPTP VPN. However, if I connect TL-MR3020 to internet(wired) and then connect my laptop to TL-MR3020 wirelessly, I can browse internet without problem. The problem is I cannot connect to home router via PPTP VPN any more. I believe the problem is on TL-MR3020.
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Jan 9, 2012
I have a remote location that has a Linksys/Cisco RV042 router [URL] that allows PPTP connections based on username and password combinations. There are no intermediary routers between this device and the internet - only a DSL modem. A secondary WAN connection is not present.
I am able to dial into this VPN using the Windows XP and Windows 7 dialers from any of my local free-wifi locations(e.g. Starbucks). I WAS able to connect to this VPN connection from my house when my home router was a Buffalo brand router.
I have replaced the Buffalo router with a 2620(non-XM) that is connected in ROaS fashion to a 2950 switch. I need some guidance on what in my config is not allowing me to connect to this remote site.
Home network info: Local subnets : 192.168.x.x
Remote network info: Local subnet : 10.214.x.x
The Windows XP dialer client indicates that the username and password challenge is where the connection fails. It ultimately gives me the error code 619. I have performed a Wireshark packet capture of an attempt to connect from ip 192.168.10.11. This packet capture shows multiple "Configuration Request" packets being exchanged between the two endpoints, but does not ever show an exchange of authentication.
My nat translation table shows an entry for both a GRE tunnel as well as port 1723 between 192.168.10.11 and the WAN port of the RV042 when attempting to establish this VPN.
I have attached my 2620 configuration for your review.
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Oct 5, 2012
I've got a problem with my new Linksys E1200 (v1) router. It cuts the bandwidth of my PPTP connection with ISP (which is 50 Mbps) down to about 12 Mpbs. My firmware is the latest one (v1.0.03 build 4). I've done some reading and found out that it's pretty common problem between Linksys E-Series routers and ISPs that use PPTP/L2TP.
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Jan 17, 2013
I setup my Windows 8 desktop for a PPTP VPN server so I can connect my iPhone 5 to it.Using the Cisco Connect Firmware, as I was having internet speed issues with the Smart Wi-Fi Firmware and I wasn't loving the interface of the Smart Wifi Firmware anyway.According to the router the firmware is up to date. All three VPN settings are enabled.PC is set to a static IP internally. 192.168.1.116 to be precise.PPTP port forwarding (1723) is set to the PC's static IP, though I have tried without port forwarding and it didn't work either.If I have my iPhone connected to the wireless network and point it to the internal IP address of the PC, I can connect to the VPN.If I bypass my router and hook my desktop directly to the modem (and point my iPhone to the IP that gets assigned to my desktop from my ISP) I can connect to the VPN.But if I have everything hooked up normally and try to connect to the VPN from my iPhone (using the IP address my ISP assigned to the router), I get a PPTP server not responding error.
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Jul 6, 2012
When my ea4500 is connected to other router with internet connection I can access CCC. But if ea4500 connected via pptp to internet by itself, i cannot use CCC because router tells 'no internet connection', even if I have this connection. How to fix it?
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Nov 5, 2012
We currently have an ASA 5520 communicating with 10 ASA 5510's, all on static outside addresses. I was asked to add 5 additional 5510's on dynamic address. All worked well in testing until it was decided that some of the dynamic clients needed to talk to each other.
My testing shows packets just dying in the 5520.
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Jun 7, 2012
how i can configure the Cisco RV042 to access PPTP VPN Server (Witopia VPn) or other vpn servers.
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Apr 14, 2011
I have a 2821 ciso router and i want to setup a vpn for my windows domain users , they must to reach the domain from outside. There is posibile to intregrate Active directory auth with pptp running on 2821 router? kind of dialin via radius server(IAS running on windows server 2003).
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Jan 24, 2011
I cannot connect to a PPTP on the outside of my network.We have a RV082, port 1723.It says verifying username and password but then disconnects.The error log says Blocked IP Spoofing.
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Nov 20, 2011
My University has free Internet at student homes, but we need to login by PPTP to get an official, public IPv4 and be able to reach the outside world. The network people at the University says that when the PPTP is up, everything should be open (no firewall of any kind).
have my WRT160NL that gets a 10.10.73.0/23 address from DHCP on WAN port. Currently I have 10.10.74.21. My internal network uses 172.17.17.0/24.My PPTP-server is located at 10.192.1.1 and when I connect, I usually get an IP in the 158.37.73.0/24-range. Currently I have 158.37.73.28. I use DynDNS to make sure I always know the public IP by the host binders.dyndns.info ...
So, I have Remote management enabled with HTTP and HTTPS, any IP and default port 8080. But no response from the outside world seems to go through.If I turn of the "filter ICMP" but keep the SPI Firewall on, I get ping reply from external sources towards my router, but still no HTTP or HTTPS response.I also have a Torrent I try to port forward to to be active, this is 23277, and this is the only thing that keeps coming up in the incoming log on my router.
It's not possible to connect to the routers management over the PPTP-tunnel?And why can't I get the port forward to work .. Same reason? PPTP 158.37.73.28 -> 172.17.17.100 (LAN) won't work?
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Mar 7, 2012
I am trying to allow PPTP traffic through my Linksys WRT320n to a PPTP VPN server on my home network.The Linksys WRT320n is running firmware 1.0.05 build 002Mar 31, 2011.I have created a Port Forwarding rule on the Linksys to allow TCP & UDP port 1723 through to my internal IP of the PPTP VPN server,but everytime I try to connect with a PPTP client from outside of my network I get a connection error on the client.Checking the PPTP VPN servers logs I see the following errors (Please note all IP's have been masked) Mar 2 11:15:07 ap-01 pptpd[5300]: CTRL: Client x.x.x.x control connection startedMar 2 11:15:07 ap-01 pptpd[5300]: CTRL: Starting call (launching pppd, opening GRE)Mar 2 11:15:07 ap-01 pppd[5301]: pppd 2.4.4 started by root, uid 0Mar 2 11:15:37 ap-01 pppd[5301]: Exit.Mar 2 11:15:37 ap-01 pptpd[5300]: GRE: read(fd=8,buffer=41fe30,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logsMar 2 11:15:37 ap-01 pptpd[5300]: CTRL: PTY read or GRE write failed (pty,gre)=(8,9)Mar 2 11:15:37 ap-01 pptpd[5300]: CTRL: Reaping child PPP[5301]Mar 2 11:15:37 ap-01 pptpd[5300]: CTRL: Client x.x.x.x control connection finished
From looking at the above errors, it seems as if the Linksys isn't forwarding GRE through to my PPTP server.I have tried various settings, including enabling and disabling the PPTP Passthrough option on the Linksysbut still can't get PPTP to work.What is the correct way to get GRE traffic forwarded through the Linksys?
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Jul 6, 2012
I have a Netgear WNDR4500 running the stock firmware, acting as a router for my home. I also have 2 routers that are flashed with DD-WRT (Linksys WRT54G and Asus WL-520GU) running as client bridges. The Netgear is 192.168.1.1 and the other 2 client bridges are 192.168.1.2 and 192.168.10.3. The Netgear router is performing DHCP giving addresses from 192.168.10.100 to 192.168.10.254. I have numerous machines connected to the Netgear, wirelessly and wired, and numerous machines wired to each client bridge. All machines have IP addresses that are 192.168.10.100, 192.168.10.101, 192.168.10.102, etc... Everything is working fine, but I have one question: When I access the Netgear router, it shows the client bridges as clients, machines that are wired and wireless to the Netgear router are listed as clients, but the client list does not show any clients that are connected to the client bridges. I assumed that since the router is performing DHCP that all clients would show up.
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Mar 20, 2012
Currently i am having a scenario where i have setup RV042 and which is connected to Microsoft Forefront 2010. PPTP works fine only on rv042 subnet but i am not able to access the "internal" network of TMG.RV042 (172.16.1.1) ---> TMG [external] (172.16.1.2) ---> TMG [internal] (192.168.1.1) Is there any way through static route to access the TMG internal network through RV042 pptp server?
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Apr 14, 2013
I am struggling to have my PPTP traffic to get routed through NAT to reach other Server LAN segment. I am using Cisco 2921 router as a PPTP server.This Cisco 2921 router is working as PPTP server and doing NAT also to reach Server LAN segment (LAN-B).My problem is after PPTP connection establishes I cannot reach any of the LAN segment, but after connecting PPTP I can browse Internet without any issue, but none of the LAN element is reachable. Please have a look on the configuration I am posting 2921 router configuration to suggest something, I have also attached the network setup for better understanding…Just to update Clients in LAN-A can access Internet as well as servers (LAN-B). [code]
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Mar 28, 2012
I have a Cisco 2921 Router with actually no clients working on it but the CPU temperature is 76 degree celsius. Is this normal? I think this is too hot.My room is aircondishened to 21 degree celsius. What can I do?
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Dec 20, 2010
i have a user in LAN which needs access to remote PPTP server. My router uses NAT NVI for some reasons to provide internet access.
Problem is what tcp/1723 is NATed successfully and it appears what GRE traffic is NATed as well, but GRE packets are NOT passed back to user on LAN.
Config is that simple:
interface Fas4
ip address x.x.x.x x.x.x.x
ip nat enable
interface Vlan1
ip address 10.0.0.1 255.255.255.0
ip nat enable
ip access-list extended nat_clients
permit ip 10.0.0.0 0.0.0.255 any
ip nat source list nat_clients interface Fas4(code)
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Jun 23, 2012
I have configured 2 RV042 VPN with different ISP. Tunnel connected successfully and i can ping each other router but i can access clients which are connected to router. I have added rules also in firewall.
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Oct 25, 2012
I have a CISCO 851W router in the garage that I want to connect to my Linksys router in the office, which is connected to the internet.The 851W is connected from it's WAN port to Lan port 1 of the Linksys router. Now, currently that ethernet cable is a straight-through cable. Does it have to be crossover? If so, I can fix that.
I want the default gateway for the CISCO router to be 192.168.2.1. I am not sure how to configure that. [URL]
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Mar 30, 2012
We have 7200 router on which two links from different ISPs are terminated. Right now one link is primary and the second one is redundant.Now we have procured our own IPs and plan to run BGP with both the service provider. Can we configure GLBP on the router so that both the links can be simultaneously used and when one goes down the other takes the full load.
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