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Old 03-20-2013, 12:59 PM   #1
makowka
LQ Newbie
 
Registered: Feb 2007
Posts: 26

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VPN connected, cannot browse internet


Hi

I have the following problem: I have established a working VPN connection to my University, but can't browse the internet:

Code:
pppd options in effect:
debug		# (from command line)
nodetach		# (from command line)
persist		# (from /etc/ppp/peers/ZUT)
logfd 2		# (from command line)
dump		# (from command line)
noauth		# (from /etc/ppp/options.pptp)
refuse-pap		# (from /etc/ppp/options.pptp)
refuse-chap		# (from /etc/ppp/options.pptp)
refuse-mschap		# (from /etc/ppp/options.pptp)
refuse-eap		# (from /etc/ppp/options.pptp)
name smak		# (from /etc/ppp/peers/ZUT)
remotename PPTP		# (from /etc/ppp/peers/ZUT)
		# (from /etc/ppp/options.pptp)
pty pptp vpn.zut.edu.pl --nolaunchpppd		# (from /etc/ppp/peers/ZUT)
crtscts		# (from /etc/ppp/options)
		# (from /etc/ppp/options)
asyncmap 0		# (from /etc/ppp/options)
lcp-echo-failure 5		# (from /etc/ppp/options)
lcp-echo-interval 60		# (from /etc/ppp/options)
lcp-max-configure 50		# (from /etc/ppp/options)
hide-password		# (from /etc/ppp/options)
ipparam ZUT		# (from /etc/ppp/peers/ZUT)
nobsdcomp		# (from /etc/ppp/options.pptp)
nodeflate		# (from /etc/ppp/options.pptp)
require-mppe-128		# (from /etc/ppp/peers/ZUT)
noipx		# (from /etc/ppp/options)
using channel 8
Using interface ppp0
Connect: ppp0 <--> /dev/pts/0
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xf7068f5f> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x1 <mru 1800> <asyncmap 0x0> <auth chap MS-v2> <magic 0xf8f5b749> <pcomp> <accomp>]
sent [LCP ConfAck id=0x1 <mru 1800> <asyncmap 0x0> <auth chap MS-v2> <magic 0xf8f5b749> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xf7068f5f> <pcomp> <accomp>]
rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0xf7068f5f> <pcomp> <accomp>]
sent [LCP EchoReq id=0x0 magic=0xf7068f5f]
rcvd [LCP EchoReq id=0x0 magic=0xf8f5b749]
sent [LCP EchoRep id=0x0 magic=0xf7068f5f]
rcvd [CHAP Challenge id=0x51 <22f7410d73e21552a0da9b3f41d13aab>, name = "pptp"]
Warning - secret file /etc/ppp/chap-secrets has world and/or group access
sent [CHAP Response id=0x51 <e77f2dbd0fe5d03009d066015089b9080000000000000000db08d778185affdf96256da3bb12e70baab577caf0c18e1900>, name = "smak"]
rcvd [LCP ConfReq id=0x2 <mru 1800> <asyncmap 0x0> <auth chap MS-v2> <magic 0x95c99332> <pcomp> <accomp>]
sent [LCP ConfReq id=0x2 <asyncmap 0x0> <magic 0x6eda897> <pcomp> <accomp>]
sent [LCP ConfAck id=0x2 <mru 1800> <asyncmap 0x0> <auth chap MS-v2> <magic 0x95c99332> <pcomp> <accomp>]
rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0xf7068f5f> <pcomp> <accomp>]
rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> <magic 0x6eda897> <pcomp> <accomp>]
sent [LCP EchoReq id=0x0 magic=0x6eda897]
rcvd [LCP EchoReq id=0x0 magic=0x95c99332]
sent [LCP EchoRep id=0x0 magic=0x6eda897]
rcvd [CHAP Challenge id=0xcb <79ed5ecca2e8375b80360b8f7a007723>, name = "pptp"]
Warning - secret file /etc/ppp/chap-secrets has world and/or group access
sent [CHAP Response id=0xcb <73853a41909932ae5dd90b62da013a23000000000000000022352f89d49301b50bea1ebb780fd4f866b5df2ac0b8b9fc00>, name = "smak"]
rcvd [LCP EchoRep id=0x0 magic=0x95c99332]
rcvd [CHAP Success id=0xcb "S=AE1C4D230AE620374FA2A9E7A26507F327307440"]
CHAP authentication succeeded
sent [CCP ConfReq id=0x1 <mppe +H -M +S -L -D -C>]
rcvd [CCP ConfReq id=0x1 <mppe +H -M +S -L -D -C>]
sent [CCP ConfAck id=0x1 <mppe +H -M +S -L -D -C>]
rcvd [CCP ConfAck id=0x1 <mppe +H -M +S -L -D -C>]
MPPE 128-bit stateless compression enabled
sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0>]
rcvd [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 212.14.24.33>]
sent [IPCP ConfAck id=0x1 <compress VJ 0f 01> <addr 212.14.24.33>]
rcvd [IPCP ConfNak id=0x1 <addr 212.14.24.40>]
sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 212.14.24.40>]
rcvd [IPCP ConfAck id=0x2 <compress VJ 0f 01> <addr 212.14.24.40>]
local  IP address 212.14.24.40
remote IP address 212.14.24.33
Script /etc/ppp/ip-up started (pid 4599)
Script /etc/ppp/ip-up finished (pid 4599), status = 0x0

I have managed to establish a working and browsable VPN connection on Windows XP, the attachments show the output of ipconfig and route print.

On my Linux machine, the output of ifconfig is:

Code:
 eth0      Link encap:Ethernet  HWaddr 00:1c:25:92:c9:a4  
          inet addr:192.168.0.11  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:27150 errors:0 dropped:0 overruns:0 frame:0
          TX packets:25216 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:23268289 (22.1 MiB)  TX bytes:3873104 (3.6 MiB)
          Interrupt:18 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:213 errors:0 dropped:0 overruns:0 frame:0
          TX packets:213 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:33704 (32.9 KiB)  TX bytes:33704 (32.9 KiB)

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:212.14.24.40  P-t-P:212.14.24.33  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1496  Metric:1
          RX packets:5 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:62 (62.0 B)  TX bytes:68 (68.0 B)
Output of route -n:
Code:
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
212.14.24.33    0.0.0.0         255.255.255.255 UH    0      0        0 ppp0
212.14.18.106   192.168.0.1     255.255.255.255 UGH   0      0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     1      0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth0
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0
0.0.0.0         0.0.0.0         0.0.0.0         U     0      0        0 eth0
What should I do to resemble the routing table from Windows on my Linux machine, that is, to get full connectivity on the VPN? It must be something with the routing table.


Problem solved: I inserted the statement "usepeerdns" into to peers file and made changes to the routing table:

iptables -A OUTPUT -p icmp -j ACCEPT
route del default gw 192.168.0.1
route add default gw 212.14.24.40 dev ppp0

Everything works fine now.
Attached Thumbnails
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Name:	ipconfig.png
Views:	10
Size:	16.9 KB
ID:	12099   Click image for larger version

Name:	routing.png
Views:	12
Size:	24.5 KB
ID:	12100  

Last edited by makowka; 03-20-2013 at 01:34 PM. Reason: Solved
 
Old 03-20-2013, 05:51 PM   #2
kbp
Senior Member
 
Registered: Aug 2009
Posts: 3,790

Rep: Reputation: 650Reputation: 650Reputation: 650Reputation: 650Reputation: 650Reputation: 650
Please mark the thread as solved, thanks
 
  


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