iOS 4.3 breaks VPN ---------------------------------------------+++++++++++

Which VPN type do you have? PPTP or L2TP or Cisco IPsec?

I haven't tested iOS 4.3 yet, but that is good to know for my IT test notes.

Same here I can no longer connect to my VPN. Hope Apple corrects this asap.

same here

ipsec doesn't work on two seperate phones

I think posters need to supply more detail. I use iVPN to allow my 10.6.6 mac mini act as a VPN server so it's the standard VPN daemons. I just tried it and my iPhone can still connect after being updated to iOS 4.3 so it isn't as simple as VPN is broken.

going further, a connection via DNS name did not work.

via ip address to the same server did

so it could be a dns issue with the phone and not a vpn issue

Message was edited by: flyingember

second edit. oops, was inside the network that the vpn server is on so it would have never worked to begin with. disregard my posts

Message was edited by: flyingember

In reply to the poster who asked to add more details. I had my VPN settings in my iPhone prior to upgrading to 4.3 and connected with no problems. I am connecting using the PPTP protocol. I have checked and rechecked the settings and the username and password, with no luck. I have tried connecting on my computer and it works fine. I tried connecting via my mobile network and through my home wifi with no luck. I hope that level of detail helps, if I need to provide anymore let me know specific points that need to be mentioned.

Same problem for me.

Client device 1: iPhone 4; iOS 4.3
- Worked fine with iOS 4.2.1
- After upgrade to iOS 4.3, connecting to PPTP fails silently.
- EDIT: fails when connecting with DNS name or IP address.

Client device 2: iPad 1; iOS 4.3
- Worked fine with iOS 4.2.1
- After upgrade to iOS 4.3, connecting to PPTP fails silently.
- EDIT: fails when connecting with DNS name or IP address.

Client device 3: iPhone 3GS; iOS 4.2.1
- Still works fine.
- EDIT: Works fine with both DNS name and IP address.

Server: Centos 5.5 x64
- pppd version 2.4.4
- poptop pptpd v1.3.4
- Linux XXXXXXXXX.hobby-site.com 2.6.18-194.32.1.el5xen #1 SMP Wed Jan 5 18:44:24 EST 2011 x86_64 x86_64 x86_64 GNU/Linux

#/etc/pptpd.conf:
option /etc/ppp/options.pptpd
logwtmp
localip 192.168.4.1
remoteip 192.168.4.110-150

{quote:title=#/etc/ppp/options.pptpd}{quote}
name pptpd
refuse-pap
refuse-chap
refuse-mschap
require-mschap-v2
require-mppe-128
ms-dns 192.168.4.1
ms-dns 4.2.2.2
debug
lock
nobsdcomp
novj
nologfd
noipv6

{quote:title=#/etc/ppp/ip-pre-up}{quote}
/sbin/iptables -t nat -A POSTROUTING -s "${5}" -o eth0 -j MASQUERADE

{quote:title=#/etc/ppp/ip-down.local}{quote}
/sbin/iptables -t nat -D POSTROUTING -s "${5}" -o eth0 -j MASQUERADE

{quote:title=#/var/log/messages}{quote}
Mar 12 03:45:11 bennett-online pptpd[7450]: CTRL: Client X.X.X.X control connection started
Mar 12 03:45:11 bennett-online pptpd[7450]: CTRL: Starting call (launching pppd, opening GRE)
Mar 12 03:45:11 bennett-online pppd[7451]: Plugin /usr/lib64/pptpd/pptpd-logwtmp.so loaded.
Mar 12 03:45:11 bennett-online pppd[7451]: pptpd-logwtmp: $Version$
Mar 12 03:45:11 bennett-online pppd[7451]: pppd 2.4.4 started by root, uid 0
Mar 12 03:45:11 bennett-online pppd[7451]: Using interface ppp0
Mar 12 03:45:11 bennett-online pppd[7451]: Connect: ppp0 <--> /dev/pts/1
Mar 12 03:45:16 bennett-online pptpd[7450]: CTRL: EOF or bad error reading ctrl packet length.
Mar 12 03:45:16 bennett-online pptpd[7450]: CTRL: couldn't read packet header (exit)
Mar 12 03:45:16 bennett-online pptpd[7450]: CTRL: CTRL read failed
Mar 12 03:45:16 bennett-online pppd[7451]: Modem hangup
Mar 12 03:45:16 bennett-online pppd[7451]: Connection terminated.
Mar 12 03:45:16 bennett-online pppd[7451]: Exit.
Mar 12 03:45:16 bennett-online pptpd[7450]: CTRL: Client X.X.X.X control connection finished

Message was edited by: Have you seen my elephant?

EDIT: looks like I spoke too soon. The fix doesn't work. 😟

Message was edited by: Have you seen my elephant?

iphone 3gs, ipsec vpn, authentication with certificate.

this worked without a glitch for more that two months on ios 4.2.1 and stopped working after update to 4.3. here is what i see:
- just after you configure vpn it works OK, over wifi as well as over 3G.
- for it to break you need to go out of data coverage (no wifi, no 3g) for some time and return back.
- also after vpn breaks, wifi can't connect, 3g works.
- sometimes reboot solves the issue (till next out of coverage visit) some times not.
- removing vpn config and installing back helps (again till next out of coverage).

Besides that i see a strange behavior of Personal Hotspot: sometimes you see it on the very first page in settings (where vpn appeares when configured), sometimes not. usually after you return to data coverage area it disappears from the first page. this means that vpn stopped working also.

regards.

Good point. Using my iPhone 3G or my original iPad on AT&T, I could connect using a PPTP connection to our WatchGuard firewall to check on the servers, etc. This has worked fine over 3G and/or wifi connection.

With iOS 4.3, clicking the VPN connection button in the settings window will display (on both devices when tried on them) "Connecting...." then it snaps back to the offline button display. If you try this several times, it will eventually connect and the button will turn blue.

Using a wifi connection tends to work better - maybe 4 or 5 tries to get it to connect when previouis iOS versions would connect on the first try.

Connections from my MBP work perfect as do connections from Windows machines and pre-iOS 4.3 iPhones and iPads.

Hi mate

I have 4 servers running pptpd (poptop)
I just bought an iPod touch 4 which came with iOS 4.3
I cannot connect to any of my servers!

that is pretty annoying considering I live in China and I need VPNs to access proper internet...

Well, I never got my PPTP VPN working. I took my phone to the Apple genius bar, who offered to replace it with a new one for free.

So if Apple wasn't aware of the problem before, they are now. 🙂

Anyway, I finally got my server working with L2TP over IPSec, which works fine with iOS 4.3. (And it's more secure than PPTP anyway). So I suppose I'm happy. 🙂

Only ipsec is working on my iphone, pptp and l2tp is not working after upgrade to ios 4.3

I just tried a iOS 4.3 at&t 3GS over 3G + PPTP Apple VPN (10.5.8 server) and it worked!

The only thing special was that my VPN server is behind a firewall, so I'm using port forwarding thru the firewall to connect to it.

just checked logs, which are saved to /Users//Library/Logs/Mobile Device/ and see lots of configd crash logs starting right after update to 4.3