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I am unable to get VPN via sstp working. The connection works inside a Windows-VM but not on my ubuntu host.

I'm not sure if my host is even talking to the other side or if the error completely happens on my side.

Authentication is done by certificate, which I configured. I cant connect using command line and also not by using network-manager gui.

I have installed following libs:

sstp-client 1.0.12-0ubuntu1

network-manager-sstp 1.2.6-0ubuntu0

libsstp-api-0 1.0.12-0ubuntu1

I can offer following config:

[vpn]

ca-cert=/home/USR123/.ssh/pfx/vpn.pem

domain=xyz

gateway=123.123.123.123

ignore-cert-warn=yes

lcp-echo-failure=5

lcp-echo-interval=30

no-vj-comp=yes

nobsdcomp=yes

nodeflate=yes

password-flags=2

proxy-password-flags=0

refuse-chap=yes

refuse-eap=yes

refuse-pap=yes

require-mppe=yes

service-type=org.freedesktop.NetworkManager.sstp



[ipv4]

dns-search=

method=auto



[ipv6]

addr-gen-mode=stable-privacy

dns-search=

ip6-privacy=0

method=auto

And following output with loglevel debug:

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7359] agent-manager: req[0x56191bd351b0, :1.89/org.freedesktop.nm-applet/1000]: agent [0x56191bd30020/"sstp"/"vpn"] MODIFY check result YES

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7610] agent-manager: req[0x56191bd351b0, :1.89/org.freedesktop.nm-applet/1000]: agent returned secrets for request [0x56191bd30020/"sstp"/"vpn"]

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7615] settings-connection[0x56191bc1bb60,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1]: (vpn:0x12345bcaa8f0) secrets returned from agent :1.89

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7616] settings-connection[0x56191bc1bb60,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1]: (vpn:0x12345bcaa8f0) secrets request completed

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7623] settings-connection[0x56191bc1bb60,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1]: (vpn:0x12345bcaa8f0) new agent secrets processed

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7627] vpn-connection[0x56191bd724c0,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1,"sstp",0]: asking service if additional secrets are required

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7636] vpn-connection[0x56191bd724c0,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1,"sstp",0]: service indicated additional secrets required

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7636] vpn-connection[0x56191bd724c0,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1,"sstp",0]: requesting VPN secrets pass #3

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7640] Secrets requested for connection /org/freedesktop/NetworkManager/Settings/3 (sstp/vpn)

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7640] agent-manager: req[0x7f35d4004870, :1.188/nmcli-connect/1000]: agent allowed for secrets request [0x56191bd30020/"sstp"/"vpn"]

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7640] agent-manager: req[0x56191bd351b0, :1.89/org.freedesktop.nm-applet/1000]: agent allowed for secrets request [0x56191bd30020/"sstp"/"vpn"]

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7641] settings-connection[0x56191bc1bb60,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1]: (vpn:0x56191bd30020) secrets requested flags 0x5 hints '(none)'

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7643] agent-manager: ([0x56191bd30020/"sstp"/"vpn"]) system settings secrets insufficient, asking agents

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7644] agent-manager: req[0x7f35d4004870, :1.188/nmcli-connect/1000]: agent getting secrets for request [0x56191bd30020/"sstp"/"vpn"]

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7644] agent-manager: ([0x56191bd30020/"sstp"/"vpn"]) request has system secrets; checking agent :1.188 for MODIFY

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7644] auth: call[681]: CheckAuthorization(org.freedesktop.NetworkManager.settings.modify.own), subject=unix-process[pid=19967, uid=1000, start=395

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7657] auth: call[681]: CheckAuthorization succeeded: (is_authorized=1, is_challenge=0)

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7657] agent-manager: req[0x7f35d4004870, :1.188/nmcli-connect/1000]: agent [0x56191bd30020/"sstp"/"vpn"] MODIFY check result YES

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7675] agent-manager: req[0x7f35d4004870, :1.188/nmcli-connect/1000]: agent returned no secrets for request [0x56191bd30020/"sstp"/"vpn"]

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7675] agent-manager: req[0x56191bd351b0, :1.89/org.freedesktop.nm-applet/1000]: agent getting secrets for request [0x56191bd30020/"sstp"/"vpn"]

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7675] agent-manager: ([0x56191bd30020/"sstp"/"vpn"]) request has system secrets; checking agent :1.89 for MODIFY

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7675] auth: call[682]: CheckAuthorization(org.freedesktop.NetworkManager.settings.modify.own), subject=unix-process[pid=1734, uid=1000, start=7235

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7688] auth: call[682]: CheckAuthorization succeeded: (is_authorized=1, is_challenge=0)

Feb 16 19:11:40 USR123 NetworkManager[981]: <debug> [1550340700.7688] agent-manager: req[0x56191bd351b0, :1.89/org.freedesktop.nm-applet/1000]: agent [0x56191bd30020/"sstp"/"vpn"] MODIFY check result YES

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.0849] agent-manager: req[0x56191bd351b0, :1.89/org.freedesktop.nm-applet/1000]: agent returned secrets for request [0x56191bd30020/"sstp"/"vpn"]

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.0858] settings-connection[0x56191bc1bb60,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1]: (vpn:0x56191bc66400) secrets returned from agent :1.89

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.0858] settings-connection[0x56191bc1bb60,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1]: (vpn:0x56191bc66400) secrets request completed

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.0875] settings-connection[0x56191bc1bb60,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1]: (vpn:0x56191bc66400) saving new secrets to backing storage

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.0974] ++ connection 'get-new-secrets' (0x56191bc69540/NMSimpleConnection/"vpn" < 0x56191bc1bb60/NMSKeyfileConnection/"vpn"):

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.0974] ++ vpn                       [ 0x51234bd7b123 < 0x1234bd1ba55 ]

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.0974] ++ vpn.secrets               = ((GHashTable*) 0x7f23a4234b10) < ((GHashTable*) 0x51244bd7b111)

Feb 16 19:11:45 USR123 NetworkManager[981]: <info>  [1550340705.0984] settings-connection[0x56191bc1bb60,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1]: write: successfully updated (keyfile: update /etc/NetworkManager/s

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.0992] vpn-connection[0x56191bd724c0,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1,"sstp",0]: asking service if additional secrets are required

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1016] vpn-connection[0x56191bd724c0,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1,"sstp",0]: service indicated no additional secrets required

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1020] vpn-connection[0x56191bd724c0,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1,"sstp",0]: Allowing interactive secrets as all agents have that capabilit

Feb 16 19:11:45 USR123 NetworkManager[981]: <info>  [1550340705.1029] vpn-connection[0x56191bd724c0,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1,"sstp",0]: VPN connection: (ConnectInteractive) reply received

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1029] vpn-connection[0x56191bd724c0,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1,"sstp",0]: VPN connection: falling back to non-interactive connect

Feb 16 19:11:45 USR123 NetworkManager[981]: <info>  [1550340705.1043] vpn-connection[0x56191bd724c0,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1,"sstp",0]: VPN plugin: state changed: starting (3)

Feb 16 19:11:45 USR123 pppd[19985]: Plugin /usr/lib/pppd/2.4.7/nm-sstp-pppd-plugin.so loaded.

Feb 16 19:11:45 USR123 NetworkManager[981]: Plugin /usr/lib/pppd/2.4.7/nm-sstp-pppd-plugin.so loaded.

Feb 16 19:11:45 USR123 pppd[19985]: pppd 2.4.7 started by root, uid 0

Feb 16 19:11:45 USR123 pppd[19985]: Using interface ppp0

Feb 16 19:11:45 USR123 NetworkManager[981]: Using interface ppp0

Feb 16 19:11:45 USR123 NetworkManager[981]: Connect: ppp0 <--> /dev/pts/2

Feb 16 19:11:45 USR123 pppd[19985]: Connect: ppp0 <--> /dev/pts/2

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1100] platform: signal: link   added: 9: ppp0 <NOARP,DOWN;pointopoint,multicast,noarp> mtu 1500 arp 512 ppp* not-init addrgenmode eui64 driver ppp

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1101] device[0x56191bd59e50] (ppp0): constructed (NMDevicePpp)

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1101] device[0x56191bd59e50] (ppp0): start setup of NMDevicePpp, kernel ifindex 9

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1102] platform-linux: error reading net:/sys/class/net/ppp0/phys_port_id: error reading 4096 bytes from file descriptor: Vorgang wird nicht unters

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1102] platform-linux: sysctl: reading 'net:/sys/class/net/ppp0/dev_id': '0x0'

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1103] platform-linux: error reading net:/sys/class/net/ppp0/device/sriov_totalvfs: Failed to open file "device/sriov_totalvfs" with openat: Datei 

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1103] platform-linux: do-request-link: 9 

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1103] device[0x56191bd59e50] (ppp0): unmanaged: flags set to [platform-init,external-down=0x810/0x810/unmanaged/unrealized], set-unmanaged [extern

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1103] device[0x56191bd59e50] (ppp0): unmanaged: flags set to [platform-init,external-down,!loopback=0x810/0x818/unmanaged/unrealized], set-managed

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1103] device[0x56191bd59e50] (ppp0): unmanaged: flags set to [platform-init,external-down,!sleeping,!loopback=0x810/0x819/unmanaged/unrealized], s

Feb 16 19:11:45 USR123 NetworkManager[981]: <info>  [1550340705.1108] manager: (ppp0): new Ppp device (/org/freedesktop/NetworkManager/Devices/9)

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1213] platform-linux: UDEV event: action 'add' subsys 'net' device 'ppp0' (9); seqnum=3988

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1214] platform: signal: link changed: 9: ppp0 <NOARP,DOWN;pointopoint,multicast,noarp> mtu 1500 arp 512 ppp* init addrgenmode eui64 driver ppp rx

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1214] device[0x56191bd59e50] (ppp0): queued link change for ifindex 9

Feb 16 19:11:45 USR123 NetworkManager[981]: <info>  [1550340705.1215] devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)

Feb 16 19:11:45 USR123 NetworkManager[981]: <info>  [1550340705.1215] device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1216] device[0x56191bd59e50] (ppp0): unmanaged: flags set to [platform-init,external-down,!sleeping,!loopback,!user-settings=0x810/0x859/unmanaged

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1216] device[0x56191bd59e50] (ppp0): unmanaged: flags set to [external-down,!sleeping,!loopback,!platform-init,!user-settings=0x800/0x859/manageab

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1218] device[0x56191bd59e50] (ppp0): ip4-config: update (commit=0, new-config=0x56191bce7090)

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1221] device[0x56191bd59e50] (ppp0): ip4-config: set IP4Config instance (/org/freedesktop/NetworkManager/IP4Config/12)

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1221] dns-mgr: (device_ip4_config_changed): queueing DNS updates (1)

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1221] dns-mgr: (device_ip4_config_changed): DNS configuration did not change

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1221] dns-mgr: (device_ip4_config_changed): no DNS changes to commit (0)

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1222] device[0x56191bd59e50] (ppp0): ip6-config: update (commit=0, new-config=0x56191bcf0b80)

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1225] device[0x56191bd59e50] (ppp0): ip6-config: set IP6Config instance (/org/freedesktop/NetworkManager/IP6Config/12)

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1225] dns-mgr: (device_ip6_config_changed): queueing DNS updates (1)

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1225] dns-mgr: (device_ip6_config_changed): DNS configuration did not change

Feb 16 19:11:45 USR123 NetworkManager[981]: <debug> [1550340705.1225] dns-mgr: (device_ip6_config_changed): no DNS changes to commit (0)

Feb 16 19:11:46 USR123 sstpc[19990]: Connection was aborted, Reason was not known

Feb 16 19:11:46 USR123 pppd[19985]: Modem hangup

Feb 16 19:11:46 USR123 NetworkManager[981]: Modem hangup

Feb 16 19:11:46 USR123 NetworkManager[981]: Connection terminated.

Feb 16 19:11:46 USR123 pppd[19985]: Connection terminated.

Feb 16 19:11:46 USR123 NetworkManager[981]: <debug> [1550340706.3168] platform: signal: link removed: 9: ppp0 <NOARP,DOWN;pointopoint,multicast,noarp> mtu 1500 arp 512 ppp* init addrgenmode eui64 driver ppp rx:

Feb 16 19:11:46 USR123 NetworkManager[981]: <debug> [1550340706.3172] platform: signal: address 4 changed: 192.168.0.5/24 lft 600797sec pref 600797sec lifetime 39568-35566[604799,604799] dev 2 flags noprefixrou

Feb 16 19:11:46 USR123 NetworkManager[981]: <debug> [1550340706.3172] device[0x56191bcd5460] (enp0s25): queued IP4 config change

Feb 16 19:11:46 USR123 NetworkManager[981]: <debug> [1550340706.3174] platform: signal: address 6 changed: 2a02:810b:c240:122c:59a4:3f8d:cf8b:93a/64 lft 4717sec pref 2017sec lifetime 39568-39530[2055,4755] dev 

Feb 16 19:11:46 USR123 NetworkManager[981]: <debug> [1550340706.3175] device[0x56191bcd5460] (enp0s25): queued IP6 config change

Feb 16 19:11:46 USR123 NetworkManager[981]: <debug> [1550340706.3176] platform: signal: address 6 changed: 2a02:810b:c240:122c:2a16:a257:5791:ee17/64 lft 4717sec pref 2017sec lifetime 39568-39530[2055,4755] dev

Feb 16 19:11:46 USR123 NetworkManager[981]: <warn>  [1550340706.3181] vpn-connection[0x56191bd724c0,1a5b2d23-d1a4-4a7e-843b-3ec123c4a6a1,"sstp",0]: VPN plugin: failed: connect-failed (1)

Feb 16 19:11:46 USR123 NetworkManager[981]: <debug> [1550340706.3182] device[0x56191bd59e50] (ppp0): unrealize (ifindex 9)