ubuntu - Unable to get maven to download from HTTPS URLs behind proxy -

from dependencies specify in pom.xml, ones use http urls gets downloaded ones use https urls fails saying:

severe: proxy authentication error: credentials cannot used ntlm authentication: org.apache.maven.wagon.providers.http.httpclient.auth.usernamepasswordcredentials 

here contents of settings.xml:

<?xml version="1.0" encoding="utf-8"?> <settings xmlns="http://maven.apache.org/settings/1.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://maven.apache.org/settings/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">  <plugingroups />  <proxies>     <proxy>         <id>proxy1</id>         <active>true</active>         <protocol>http</protocol>         <host>proxy.mycompany.com</host>         <port>6050</port>         <username>domain\username</username>         <password>password</password>         <nonproxyhosts></nonproxyhosts>     </proxy>     <proxy>         <id>proxy2</id>         <active>true</active>         <protocol>https</protocol>         <host>proxy.mycompany.com</host>         <port>6050</port>         <username>domain\username</username>         <password>password</password>         <nonproxyhosts></nonproxyhosts>     </proxy> </proxies>  <servers> </servers>  <mirrors> </mirrors>  <profiles>     <profile>         <id>centralrepo</id>         <repositories>             <repository>                 <id>central</id>                 <url>http://central</url>                 <releases>                     <enabled>true</enabled>                 </releases>                 <snapshots>                     <enabled>true</enabled>                 </snapshots>             </repository>             <repository>                 <id>fortytwo</id>                 <name>fortytwo.net maven repository</name>                 <url>http://fortytwo.net/maven2</url>                 <releases>                     <enabled>true</enabled>                 </releases>                 <snapshots>                     <enabled>true</enabled>                 </snapshots>             </repository>             <repository>                 <id>javanet</id>                 <name>java.net maven repository</name>                 <url>http://download.java.net/maven/2</url>                 <releases>                     <enabled>true</enabled>                 </releases>                 <snapshots>                     <enabled>true</enabled>                 </snapshots>             </repository>             <repository>                 <id>scala-tools.org</id>                 <name>scala-tools maven2 repository</name>                 <url>http://scala-tools.org/repo-releases</url>             </repository>         </repositories>         <pluginrepositories>             <pluginrepository>                 <id>central</id>                 <url>http://central</url>                 <releases>                     <enabled>true</enabled>                 </releases>                 <snapshots>                     <enabled>true</enabled>                 </snapshots>             </pluginrepository>             <pluginrepository>                 <id>scala-tools.org</id>                 <name>scala-tools maven2 repository</name>                 <url>http://scala-tools.org/repo-releases</url>             </pluginrepository>                                       </pluginrepositories>     </profile>         </profiles> </settings> 

i googled , found people suggest use cntlm. so, installed cntlm , edited /etc/cntlm.conf file following:

# # cntlm authentication proxy configuration # # note: values parsed literally, not escape spaces, # not quote. use 0600 perms if use plaintext password. #  username    username domain      domain password    password # note: use plaintext password @ own risk # use hashes instead. can use "cntlm -m" , "cntlm -h" # command sequence right config environment. # see cntlm man page # example secure config shown below. # passlm          1ad35398be6565ddb5c4ef70c0593492 # passnt          77b9081511704ee852f94227cf48a793 ### user 'testuser', domain 'corp-uk' # passntlmv2      d5826e9c665c37c80b53397d5c07bbcb  # specify netbios hostname cntlm send parent # proxies. value auto-guessed. # # workstation   netbios_hostname  # list of parent proxies use. more proxies can defined # 1 per line in format <proxy_ip>:<proxy_port> # proxy       proxy.mycompany.com:6050  # list addresses not want pass parent proxies # * , ? wildcards can used # noproxy     localhost, 127.0.0.*, 10.*, 192.168.*  # specify port cntlm listen on # can bind cntlm specific interface specifying # appropriate ip address in format <local_ip>:<local_port> # cntlm listens on 127.0.0.1:3128 default # listen      3128  # if wish use socks5 proxy feature well, uncomment # following option. can used several times # have socks5 on more 1 port or on different network # interfaces (specify explicit source address that). # # warning: service accepts requests, unless use # socks5user , make authentication mandatory. socks5user # can used repeatedly whole bunch of individual accounts. # #socks5proxy    8010 #socks5user dave:password  # use -m first detect best ntlm settings proxy. # default use secure hash, ntlmv2, not # available older stuff. # # example universal setup known man, # uses weakest hash ever. won't have it's usage on # conscience. :) really, try -m first. # #auth       lm #flags      0x06820000  # enable allow access other computers # #gateway    yes  # useful in gateway mode allow/restrict ips # specifiy individual ips or subnets 1 rule per line. # #allow      127.0.0.1 #deny       0/0  # gfi webmonitor-handling plugin parameters, disabled default # #isascannersize     1024 #isascanneragent    wget/ #isascanneragent    apt-http/ #isascanneragent    yum/  # headers should replaced if present in request # #header     user-agent: mozilla/4.0 (compatible; msie 5.5; windows 98)  # tunnels mapping local port machine behind proxy. # format <local_port>:<remote_host>:<remote_port> #  #tunnel     11443:remote.com:443 

when try test cntlm sudo cntlm -v -i -m http://google.com, following:

reading proxy auth response... head: http/1.1 407 proxy authorization required . . . head: http/1.1 407 proxy authorization required credentials rejected 

i sure credentials correct maven able download dependencies http urls.

about month ago, company changed ssl certificates https proxy , ever since, have been getting error.

help !

solution problem https_proxy environment variable cntlm authentication proxy. please find here answer! contact me if need kind of help!