Ho un problema che è "NetworkManager non si aggiorna /etc/resolv.conf
dopo la connessione openvpn con push DNS configurato".
Ecco la mia configurazione del server openvpn: ( Ho cambiato il nome di dominio in ABC.COM per motivi di sicurezza;) )
########################################
# Sample OpenVPN config file for
# 2.0-style multi-client udp server
#
# Adapted from http://openvpn.sourceforge.net/20notes.html
#
# tun-style tunnel
port 1194
dev tun
# Use "local" to set the source address on multi-homed hosts
#local [IP address]
# TLS parms
tls-server
ca keys/ca.crt
cert keys/static.crt
key keys/static.key
dh keys/dh1024.pem
proto tcp-server
# Tell OpenVPN to be a multi-client udp server
mode server
# The server's virtual endpoints
ifconfig 10.8.0.1 10.8.0.2
# Pool of /30 subnets to be allocated to clients.
# When a client connects, an --ifconfig command
# will be automatically generated and pushed back to
# the client.
ifconfig-pool 10.8.0.4 10.8.0.255
# Push route to client to bind it to our local
# virtual endpoint.
push "route 10.8.0.1 255.255.255.255"
push "dhcp-option DNS 10.8.0.1"
# Push any routes the client needs to get in
# to the local network.
#push "route 192.168.0.0 255.255.255.0"
# Push DHCP options to Windows clients.
push "dhcp-option DOMAIN ABC.COM"
#push "dhcp-option DNS 192.168.0.1"
#push "dhcp-option WINS 192.168.0.1"
# Client should attempt reconnection on link
# failure.
keepalive 10 60
# Delete client instances after some period
# of inactivity.
inactive 600
# Route the --ifconfig pool range into the
# OpenVPN server.
route 10.8.0.0 255.255.255.0
# The server doesn't need privileges
user openvpn
group openvpn
# Keep TUN devices and keys open across restarts.
persist-tun
persist-key
verb 4
Come puoi vedere, è una configurazione di base di base con poca regolazione.
Adesso..
Sul mio computer (client openvpn), posso vedere che DNS è ok:
{17:12}/etc/NetworkManager ➭ nslookup git.ABC.COM 10.8.0.1
Server: 10.8.0.1
Address: 10.8.0.1#53
Name: git.ABC.COM
Address: 10.8.0.1
{17:18}/etc/NetworkManager ➭ nslookup ABC.COM 10.8.0.1
Server: 10.8.0.1
Address: 10.8.0.1#53
Name: ABC.COM
Address: 18X.XX.XX.71
I log di openvpn sul lato server dicono (se ho capito bene) che il DNS è stato inviato:
openvpn[13257]: TCPv4_SERVER link remote: [AF_INET]83.30.135.214:37658
openvpn[13257]: 83.30.135.214:37658 TLS: Initial packet from [AF_INET]83.30.135.214:37658, sid=3251df51 915772f3
openvpn[13257]: 83.30.135.214:37658 VERIFY OK: depth=1, C=XX, ST=XX, L=XXX, O=XXX, OU=XXX, CN=XXX, name=XXX, emailAddress=mail@ABC.COM
openvpn[13257]: 83.30.135.214:37658 VERIFY OK: depth=0, C=XX, ST=XX, L=XXX, O=XXX, OU=XXX, CN=XXX, name=XXX, emailAddress=mail@ABC.COM
openvpn[13257]: 83.30.135.214:37658 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
openvpn[13257]: 83.30.135.214:37658 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
openvpn[13257]: 83.30.135.214:37658 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
openvpn[13257]: 83.30.135.214:37658 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
openvpn[13257]: 83.30.135.214:37658 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA
openvpn[13257]: 83.30.135.214:37658 [jacek] Peer Connection Initiated with [AF_INET]83.30.135.214:37658
openvpn[13257]: jacek/83.30.135.214:37658 MULTI_sva: pool returned IPv4=10.8.0.10, IPv6=(Not enabled)
openvpn[13257]: jacek/83.30.135.214:37658 MULTI: Learn: 10.8.0.10 -> jacek/83.30.135.214:37658
openvpn[13257]: jacek/83.30.135.214:37658 MULTI: primary virtual IP for jacek/83.30.135.214:37658: 10.8.0.10
openvpn[13257]: jacek/83.30.135.214:37658 PUSH: Received control message: 'PUSH_REQUEST'
openvpn[13257]: jacek/83.30.135.214:37658 send_push_reply(): safe_cap=940
openvpn[13257]: jacek/83.30.135.214:37658 SENT CONTROL [jacek]: 'PUSH_REPLY,route 10.8.0.1 255.255.255.255,dhcp-option DNS 10.8.0.1,dhcp-option DOMAIN ABC.COM,ping 10,ping-restart 60,ifconfig 10.8.0.10 10.8.0.9' (status=1)
registri openvp dalla mia parte:
Aug 05 17:13:55 localhost.localdomain openvpn[1198]: TCPv4_CLIENT link remote: [AF_INET]XXX.XX.37.71:1194
Aug 05 17:13:55 localhost.localdomain openvpn[1198]: TLS: Initial packet from [AF_INET]XXX.XX.37.71:1194, sid=89cc981c d57dd826
Aug 05 17:13:56 localhost.localdomain openvpn[1198]: VERIFY OK: depth=1, C=XX, ST=XX, L=XXX, O=XXX, OU=XXX, CN=XXX, name=XXX, emailAddress=mail@ABC.COM
Aug 05 17:13:56 localhost.localdomain openvpn[1198]: VERIFY OK: depth=0, C=XX, ST=XX, L=XXX, O=XXX, OU=XXX, CN=XXX, name=XXX, emailAddress=mail@ABC.COM
Aug 05 17:13:58 localhost.localdomain openvpn[1198]: Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
Aug 05 17:13:58 localhost.localdomain openvpn[1198]: Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Aug 05 17:13:58 localhost.localdomain openvpn[1198]: Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
Aug 05 17:13:58 localhost.localdomain openvpn[1198]: Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Aug 05 17:13:58 localhost.localdomain openvpn[1198]: Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA
Aug 05 17:13:58 localhost.localdomain openvpn[1198]: [static] Peer Connection Initiated with [AF_INET]XXX.XX.37.71:1194
Aug 05 17:14:00 localhost.localdomain openvpn[1198]: SENT CONTROL [static]: 'PUSH_REQUEST' (status=1)
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: PUSH: Received control message: 'PUSH_REPLY,route 10.8.0.1 255.255.255.255,dhcp-option DNS 10.8.0.1,dhcp-option DOMAIN ABC.COM,ping 10,ping-restart 60,ifconfig 10.8.0.10 10.8.0.9'
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: OPTIONS IMPORT: timers and/or timeouts modified
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: OPTIONS IMPORT: --ifconfig/up options modified
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: OPTIONS IMPORT: route options modified
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: OPTIONS IMPORT: --ip-win32 and/or --dhcp-option options modified
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: ROUTE_GATEWAY 10.123.123.1/255.255.255.0 IFACE=wlan0 HWADDR=44:6d:57:32:81:2e
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: TUN/TAP device tun0 opened
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: TUN/TAP TX queue length set to 100
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: do_ifconfig, tt->ipv6=0, tt->did_ifconfig_ipv6_setup=0
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: /usr/sbin/ip link set dev tun0 up mtu 1500
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: /usr/sbin/ip addr add dev tun0 local 10.8.0.10 peer 10.8.0.9
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: /usr/sbin/ip route add 10.8.0.1/32 via 10.8.0.9
Aug 05 17:14:01 localhost.localdomain openvpn[1198]: Initialization Sequence Completed
Sembra che tutto vada bene.
Ma. Ho controllato /var/log/messages
anche ... e ho trovato quella riga:
Aug 5 17:14:01 localhost NetworkManager[761]: <warn> /sys/devices/virtual/net/tun0: couldn't determine device driver; ignoring...
ip a
ritorna:
5: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 100
link/none
inet 10.8.0.10 peer 10.8.0.9/32 scope global tun0
valid_lft forever preferred_lft forever
route -n
ritorna:
# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.123.123.1 0.0.0.0 UG 0 0 0 wlan0
10.8.0.1 10.8.0.9 255.255.255.255 UGH 0 0 0 tun0
10.8.0.9 0.0.0.0 255.255.255.255 UH 0 0 0 tun0
10.123.123.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0
Quindi praticamente tutto funziona, tranne il DNS che viene spinto ... Oh! Giusto, e il mio /etc/resolv.conf
:
# Generated by NetworkManager
domain home
search home
nameserver 10.123.123.1
Dov'è il problema?
(Ho una risposta da un utente Windows con client openvpn, che dalla sua parte il DNS funziona bene, quindi è un problema dalla mia parte.
Ok ora ho un'altra risposta (dopo aver riavviato il servizio openvpn sul lato server) - non funziona.
Devo dire che ieri ha funzionato anche sulla mia macchina .. quindi ho rovinato qualcosa sul server? Cosa potrebbe essere? )
Modifica: Okay, ho un'altra risposta per l'utente di Windows (lo stesso utente di prima) - ora funziona. Quindi .. immagino che sia stato causato dal riavvio di openvpn e da alcuni ritardi con esso. Da allora non ho fatto nulla. Quindi siamo tornati sulla mia macchina.
Ho anche rintracciato che quel tun0
messaggio strano è apparso anche ieri, e ieri ha funzionato. O forse ho aggiunto l'ingresso a resolv.conf
me stesso? Non ricordo .. (accidenti)
/etc/NetworkManager/NetworkManager.conf
: decommentare dns=dnsmasq
e avere managed=true
. Inoltre, potresti essere interessato dal bug # 1294899 L'importazione della connessione VPN salvata è stata interrotta di recente nonostante una connessione VPN "stabilita". Controlla le tue impostazioni VPN: inserisci il nome del protocollo ( :tcp
o :udp
) nel Gateway
campo. Controlla le impostazioni avanzate, in particolare Port number
e LZO compression
. Controlla anche i registri. Termina con un test di tenuta DNS .