Pptpd Gre Input/output Error
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Input/output Error, Usually Caused By Unexpected Termination Of Pppd
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Gre: Bad Checksum From Pppd
minute: Sign up VPN PPTP - CTRL: PTY read or GRE write failed up vote 3 down vote favorite I build my VPN server on digitocean using this script https://raw2.github.com/suyan/Scripts/master/Setup/pptp.sh However I cannot connect to this VPN server using either my iPhone or Mac. Here is /var/log/syslog says: Oct 31 18:44:29 VPN pptpd[1422]: CTRL: Client xx.xx.xx.xx control connection started Oct 31 18:44:29 lcp timeout sending config requests pptp VPN pptpd[1422]: CTRL: Starting call (launching pppd, opening GRE) Oct 31 18:44:29 VPN pppd[1423]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded. Oct 31 18:44:29 VPN pppd[1423]: pppd 2.4.5 started by root, uid 0 Oct 31 18:44:29 VPN pppd[1423]: Using interface ppp0 Oct 31 18:44:29 VPN pppd[1423]: Connect: ppp0 <--> /dev/pts/1 Oct 31 18:44:59 VPN pppd[1423]: LCP: timeout sending Config-Requests Oct 31 18:44:59 VPN pppd[1423]: Connection terminated. Oct 31 18:44:59 VPN pppd[1423]: Modem hangup Oct 31 18:44:59 VPN pppd[1423]: Exit. Oct 31 18:44:59 VPN pptpd[1422]: GRE: read(fd=6,buffer=b77c8480,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs Oct 31 18:44:59 VPN pptpd[1422]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Oct 31 18:44:59 VPN pptpd[1422]: CTRL: Reaping child PPP[1423] Oct 31 18:44:59 VPN pptpd[1422]: CTRL: Client xx.xx.xx.xx control connection finished Can anyone help? vpn digital-ocean pptp share|improve this question asked Oct 31 '14 at 22:52 Haoliang 12729 add a comment| 2 Answers 2 active oldest votes up vote 0 down vote Changing /etc/ppp/pptpd-options to the following options worked for me: refuse-pap refuse-chap refuse-mschap #require-chap #require-ms
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But I Couldn't Find Any Suitable Secret (password) For It To Use To Do So.
About Us Learn more about Stack Overflow the company Business Learn more about hiring mppe required but peer negotiation failed developers or posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ Unix & Linux modem hangup Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask http://stackoverflow.com/questions/26684559/vpn-pptp-ctrl-pty-read-or-gre-write-failed a question Anybody can answer The best answers are voted up and rise to the top pptp is refusing traffic up vote 1 down vote favorite I have setup a pptp (VPN) server on CentOS 6.5. I can connect, but unfortunately, when I try to load a page, it hangs on 'Connecting...' I have no idea what could cause this... tail /var/log/messages returns: Apr 29 12:55:42 ps-vpn001 http://unix.stackexchange.com/questions/199456/pptp-is-refusing-traffic pptpd[1287]: GRE: read(fd=6,buffer=611860,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs Apr 29 12:55:42 ps-vpn001 pptpd[1287]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Apr 29 12:55:42 ps-vpn001 pptpd[1287]: CTRL: Client x.x.x.x control connection finished Apr 29 12:55:59 ps-vpn001 pptpd[1296]: CTRL: Client x.x.x.x control connection started Apr 29 12:55:59 ps-vpn001 pptpd[1296]: CTRL: Starting call (launching pppd, opening GRE) Apr 29 12:55:59 ps-vpn001 pppd[1297]: Plugin /usr/lib64/pptpd/pptpd-logwtmp.so loaded. Apr 29 12:55:59 ps-vpn001 pppd[1297]: pppd 2.4.5 started by root, uid 0 Apr 29 12:55:59 ps-vpn001 pppd[1297]: Using interface ppp0 Apr 29 12:55:59 ps-vpn001 pppd[1297]: Connect: ppp0 <--> /dev/pts/1 Apr 29 12:55:59 ps-vpn001 pppd[1297]: peer from calling number x.x.x.x authorized Apr 29 12:55:59 ps-vpn001 pppd[1297]: MPPE 128-bit stateless compression enabled Apr 29 12:55:59 ps-vpn001 pppd[1297]: found interface eth0 for proxy arp Apr 29 12:55:59 ps-vpn001 pppd[1297]: local IP address 188.166.94.95 Apr 29 12:55:59 ps-vpn001 pppd[1297]: remote IP address 188.166.94.95 Apr 29 12:56:20 ps-vpn001 pppd[1297]: LCP terminated by peer (MPPE disabled) Apr 29 12:56:20 ps-vpn001 pppd[1297]: Connect time 0.4 minutes. Apr 29 12:56:20 ps-vpn001 pppd[1297]: Sent 0 bytes, received 22428 bytes. Apr 29 12:56:20 ps-vpn001 pptpd[1296]: CTRL: EOF or bad
9red hat 8.0red hat 7.3suse 10.0suse 9.2suse 9.1suse 8.2ubuntudiagnosissupport faqdiagramsroutingsecurity team developers cvs contact us PPTP Client Diagnosis HOWTO by James Cameron12th April 2006 You're probably here http://pptpclient.sourceforge.net/howto-diagnosis.phtml because you have a problem getting PPTP Client to work. There are many reasons why it can fail. Other people may have encountered the problem you have. This HOWTO is a series of known problems in installation and running order. When the PPTP Client fails, it will display an error message. Search for the message input/output error in this page. For some error messages, more detail will need to be gathered. This is done by enabling debug logging. Near the end of the document, we also show a fault tree, and some additional documentation for using tools to determine what your problem is. We thank the many contributors to this page. If pptpd gre input/output you think you've found a solution to a common problem, please write it up in our problem, diagnosis, solution format, and submit it to the mailing list. Contents Conventions Installing kernel modules Installing pppd ppp <= 2.3.15 conflicts with kernel Installing pptp Installing pptpconfig Running pptpconfig Fatal error: php-gtk: Could not open display Running pptp-command insecure dependency WARNING: the line: contains unsafe characters ERROR! Connection timed out New interface not found Running pptp pptp: command not found connect: Connection Refused connect: Network is unreachable connect: No route to host Input/output error Protocol not available Operation not permitted buffering out-of-order packet Running pppd (before connection) pppd cannot load kernel module ppp_generic Couldn't set tty to PPP discipline: Invalid argument write: warning: Input/output error none of the available passwords would let it use an IP address Running pppd (during connection) CHAP authentication failed No dialin permission Unknown MS-CHAP authentication failure: E=649 Remote message: Unknown authentication failure: E=649 failed to authenticate ourselves to peer remote system is