Cisco 827-4V and Windows XP: cannot make PPTP connections working
I configured a VPN connection (native Windows PPTP connection) between my home PC (Windows XP Professional) and my office VPN server (Windows 2000 Server). I connect to the Internet via a Cisco 827-4V router (IOS 12.2(8)T4) and my ISP assigns to it a dynamic IP.
When I try to establish the connection it says "Verifying Username and Password" for 40 secs. and then I receive error 721 (The remote computer is not responding), but if I try again and again (50/60 times) I finally succeed in connecting.
I made the following tests:
1) I tried to substitute the operating system (e.g. Windows 2000, Windows NT 4) -> I succeed in connecting every time.
2) I tried to substitute the Cisco 827-4V with a ZyXEL 645R -> I succeed in connecting every time (also with Windows XP).
So, it seems to be a problem with the couple 827-4V / Windows XP, but I really can't understand which problem.
This is my router configuration:
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
enable secret <password>
clock timezone CET 1
clock summer-time CEST recurring last Sun Mar 2:00 last Sun Oct 3:00
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip domain-name <domain name>
ip name-server <primary dns server>
ip name-server <secondary dns server>
ip dhcp excluded-address 192.168.30.1
ip dhcp pool Client
network 192.168.30.0 255.255.255.0
dns-server <primary dns server> <secondary dns server>
domain-name <domain name>
ip address 192.168.30.1 255.255.255.0
ip nat inside
ip tcp adjust-mss 1452
hold-queue 100 out
no ip address
no atm ilmi-keepalive
pppoe-client dial-pool-number 1
dsl operating-mode auto
ip address negotiated
ip nat outside
dialer pool 1
ppp pap sent-username <username> password <password>
ip nat inside source list 101 interface Dialer0 overload
ip route 0.0.0.0 0.0.0.0 Dialer0
no ip http server
ip pim bidir-enable
access-list 101 permit ip 192.168.30.0 0.0.0.255 any
Re: Cisco 827-4V and Windows XP: cannot make PPTP connections wo
Your configuration seems to be correct. There may be something that needs to be added to the configuration for the XP to work or it might be an issue with the XP's configuration. TAC can probably answer this issue for you.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...