🥇Freeradius + Google Authenticator + LDAP + Fortigate

Kuthiwani uma ukuqinisekiswa kwezinto ezimbili kufiseleka futhi kuyi-prickly, kodwa ayikho imali yamathokheni we-hardware futhi ngokujwayelekile banikeza ukuhlala besesimweni esihle.

Lesi sixazululo asiyona into yoqobo kakhulu, kodwa siyingxube yezixazululo ezahlukahlukene ezitholakala ku-inthanethi.

Ngakho inikezwe

Isizinda I-Active Directory.

Abasebenzisi besizinda abasebenza nge-VPN, njengabaningi namuhla.

I-VPN isebenza njengesango Hlanganisa.

Ukulondoloza iphasiwedi yeklayenti le-VPN kunqatshelwe inqubomgomo yokuphepha.

Ezombusazwe Fortinet ngokuphathelene namathokheni akho, awukwazi ukubiza ngaphansi kwe-zhlob - kunamathokheni amahhala angu-10, amanye - ngentengo engeyona i-kosher kakhulu. Angizange ngicabangele i-RSSecureID, i-Duo nokunye okunjalo, ngoba ngifuna umthombo ovulekile.

Okudingekayo: umsingathi * nix ngokusungulwa freeradius, ssd - Kufakwe esizindeni, abasebenzisi besizinda bangaqinisekisa kalula kuso.

Amaphakheji engeziwe: i-shelinabox, i-figlet, freeradius-ldap, ifonti hlubuka.tlf kusuka endaweni yokugcina https://github.com/xero/figlet-fonts.

Esibonelweni sami - i-CentOS 7.8.

I-logic yomsebenzi kufanele ibe kanje: lapho uxhuma ku-VPN, umsebenzisi kufanele afake ukungena ngemvume kwesizinda kanye ne-OTP esikhundleni sephasiwedi.

Ukusetha amasevisi

В /etc/raddb/radiusd.conf umsebenzisi kuphela neqembu eliqalayo esikhundleni salo freeradius, kusukela enkonzweni i-radiusd kufanele ikwazi ukufunda amafayela kuwo wonke ama-subdirectories / ekhaya /.

user = root
group = root

Ukuze ukwazi ukusebenzisa amaqembu kuzilungiselelo Hlanganisa, kufanele idluliselwe Isibaluli Esiqondile Somthengisi. Ukuze wenze lokhu, ku-directory raddb/policy.d Ngidala ifayela elinokuqukethwe okulandelayo:

group_authorization {
    if (&LDAP-Group[*] == "CN=vpn_admins,OU=vpn-groups,DC=domain,DC=local") {
            update reply {
                &Fortinet-Group-Name = "vpn_admins" }
            update control {
                &Auth-Type := PAM
                &Reply-Message := "Welcome Admin"
                }
        }
    else {
        update reply {
        &Reply-Message := "Not authorized for vpn"
            }
        reject
        }
}

Ngemva kokufaka freeradius-ldap ohlwini lwemibhalo raddb/mods-available ifayela liyadalwa ldap.

Udinga ukudala isixhumanisi esingokomfanekiso kuhla lwemibhalo raddb/mods-enabled.

ln -s /etc/raddb/mods-available/ldap /etc/raddb/mods-enabled/ldap

Ngiletha okuqukethwe kwayo kuleli fomu:

ldap {
        server = 'domain.local'
        identity = 'CN=freerad_user,OU=users,DC=domain,DC=local'
        password = "SupeSecretP@ssword"
        base_dn = 'dc=domain,dc=local'
        sasl {
        }
        user {
                base_dn = "${..base_dn}"
                filter = "(sAMAccountname=%{%{Stripped-User-Name}:-%{User-Name}})"
                sasl {
                }
                scope = 'sub'
        }
        group {
                base_dn = "${..base_dn}"
                filter = '(objectClass=Group)'
                scope = 'sub'
                name_attribute = cn
                membership_filter = "(|(member=%{control:Ldap-UserDn})(memberUid=%{%{Stripped-User-Name}:-%{User-Name}}))"
                membership_attribute = 'memberOf'
        }
}

Kumafayela raddb/sites-enabled/default и raddb/sites-enabled/inner-tunnel esigabeni gunyaza Ngengeza igama lenqubomgomo ezosetshenziswa - group_authorization. Iphuzu elibalulekile - igama lenqubomgomo alinqunywa igama lefayela ohlwini lwemibhalo inqubomgomo.d, kodwa ngomyalelo ngaphakathi kwefayela ngaphambi kwezikaki ezigoqekile.
Esigabeni qinisekisa kumafayela afanayo udinga ukukhulula umugqa pam.

Kufayela amaklayenti.conf chaza amapharamitha ezoxhuma ngawo Hlanganisa:

client fortigate {
    ipaddr = 192.168.1.200
    secret = testing123
    require_message_authenticator = no
    nas_type = other
}

Ukumiswa kwemodyuli pam.d/radiusd:

#%PAM-1.0
auth       sufficient   pam_google_authenticator.so
auth       include      password-auth
account    required     pam_nologin.so
account    include      password-auth
password   include      password-auth
session    include      password-auth

Izinketho ezizenzakalelayo zokuqalisa inqwaba freeradius с i-authenticator ye-google dinga umsebenzisi ukuthi afake imininingwane ngefomethi: igama lomsebenzisi/iphasiwedi+I-OTP.

Ngokucabangela inani leziqalekiso ezizowela ekhanda, esimweni sokusebenzisa inqwaba ezenzakalelayo freeradius с I-Google Authenticator, kwanqunywa ukuthi kusetshenziswe ukucushwa kwemojula pam ukuze kuhlolwe uphawu kuphela I-Google Authenticator.

Lapho umsebenzisi exhuma, okulandelayo kwenzeka:

U-Freeradius uhlola ukuthi umsebenzisi usesizindeni futhi useqenjini elithile futhi, uma ephumelele, uhlola ithokheni ye-OTP.

Yonke into yayibukeka iphumelele ngaze ngacabanga, “Ngingayibhalisa kanjani i-OTP kubasebenzisi abangu-300+?”

Umsebenzisi kufanele angene ngemvume kuseva nge freeradius naku-akhawunti yakho bese wethula uhlelo lokusebenza I-Google Authenticator, ezokhiqiza ikhodi ye-QR yohlelo lokusebenza lomsebenzisi. Yilapho esiza khona ukuhlenga i-shelinabox ngokuhlangana ne- .bash_profile.

[root@freeradius ~]# yum install -y shellinabox

Ifayela lokumisa le-daemon litholakala kokuthi /etc/sysconfig/shellinabox.
Ngicacisa i-port 443 lapho futhi ungacacisa isitifiketi sakho.

[root@freeradius ~]#systemctl enable --now shellinaboxd

Umsebenzisi angalandela isixhumanisi kuphela, afake imininingwane yesizinda futhi athole ikhodi ye-QR yohlelo lokusebenza.

I-algorithm imi kanjena:

Umsebenzisi ungena emshinini esebenzisa isiphequluli.
Ukuthi umsebenzisi wesizinda uhloliwe. Uma kungenjalo, akukho sinyathelo esithathwayo.
Uma umsebenzisi engumsebenzisi wesizinda, ubulungu eqenjini Labalawuli buyahlolwa.
Uma kungeyena umlawuli, ihlola ukuthi i-Google Autheticator imisiwe yini. Uma kungenjalo, kuzobe sekwenziwa ikhodi ye-QR bese umsebenzisi ephuma.
Uma kungeyena umlawuli kanye ne-Google Authenticator emisiwe, vele uphume.
Uma ungumqondisi, bese uhlola UbuFakazi buka-Google futhi. Uma ingalungiselelwe, ikhodi ye-QR iyakhiqizwa.

Yonke i-logic yenziwa ngokusebenzisa /etc/skel/.bash_profile.

ikati /etc/skel/.bash_profile

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs
# Make several commands available from user shell

if [[ -z $(id $USER | grep "admins") || -z $(cat /etc/passwd | grep $USER) ]]
  then
    [[ ! -d $HOME/bin ]] && mkdir $HOME/bin
    [[ ! -f $HOME/bin/id ]] && ln -s /usr/bin/id $HOME/bin/id
    [[ ! -f $HOME/bin/google-auth ]] && ln -s /usr/bin/google-authenticator $HOME/bin/google-auth
    [[ ! -f $HOME/bin/grep ]] && ln -s /usr/bin/grep $HOME/bin/grep
    [[ ! -f $HOME/bin/figlet ]] && ln -s /usr/bin/figlet $HOME/bin/figlet
    [[ ! -f $HOME/bin/rebel.tlf ]] && ln -s /usr/share/figlet/rebel.tlf $HOME/bin/rebel.tlf
    [[ ! -f $HOME/bin/sleep ]] && ln -s /usr/bin/sleep $HOME/bin/sleep
  # Set PATH env to <home user directory>/bin
    PATH=$HOME/bin
    export PATH
  else
    PATH=PATH=$PATH:$HOME/.local/bin:$HOME/bin
    export PATH
fi


if [[ -n $(id $USER | grep "domain users") ]]
  then
    if [[ ! -e $HOME/.google_authenticator ]]
      then
        if [[ -n $(id $USER | grep "admins") ]]
          then
            figlet -t -f $HOME/bin/rebel.tlf "Welcome to Company GAuth setup portal"
            sleep 1.5
            echo "Please, run any of these software on your device, where you would like to setup OTP:
Google Autheticator:
AppStore - https://apps.apple.com/us/app/google-authenticator/id388497605
Play Market - https://play.google.com/stor/apps/details?id=com.google.android.apps.authenticator2&hl=en
FreeOTP:
AppStore - https://apps.apple.com/us/app/freeotp-authenticator/id872559395
Play Market - https://play.google.com/store/apps/details?id=org.fedorahosted.freeotp&hl=en

And prepare to scan QR code.

"
            sleep 5
            google-auth -f -t -w 3 -r 3 -R 30 -d -e 1
            echo "Congratulations, now you can use an OTP token from application as a password connecting to VPN."
          else
            figlet -t -f $HOME/bin/rebel.tlf "Welcome to Company GAuth setup portal"
            sleep 1.5
            echo "Please, run any of these software on your device, where you would like to setup OTP:
Google Autheticator:
AppStore - https://apps.apple.com/us/app/google-authenticator/id388497605
Play Market - https://play.google.com/store/apps/details?id=com.google.android.apps.authenticator2&hl=en
FreeOTP:
AppStore - https://apps.apple.com/us/app/freeotp-authenticator/id872559395
Play Market - https://play.google.com/store/apps/details?id=org.fedorahosted.freeotp&hl=en

And prepare to scan QR code.

"
            sleep 5
            google-auth -f -t -w 3 -r 3 -R 30 -d -e 1
            echo "Congratulations, now you can use an OTP token from application as a password to VPN."
            logout
        fi
      else
        echo "You have already setup a Google Authenticator"
        if [[ -z $(id $USER | grep "admins") ]]
          then
          logout
        fi
    fi
  else
    echo "You don't need to set up a Google Authenticator"
fi

Qinisa ukusetha:

Siyadala Ububanzi-seva
Sakha amaqembu adingekayo, uma kunesidingo, ukulawula ukufinyelela ngamaqembu. Igama leqembu livuliwe Hlanganisa kufanele ifane neqembu elidluliselwe kulo Isibaluli Esiqondile Somthengisi I-Fortinet-Iqembu-Igama.
Ukuhlela okudingekayo I-SSL-izingosi.
Yengeza amaqembu kuzinqubomgomo.

Izinzuzo zalesi sixazululo:

Kuyenzeka ukugunyazwa nge-OTP kuvuliwe Hlanganisa isixazululo somthombo ovulekile.
Umsebenzisi akayifaki iphasiwedi yesizinda lapho exhuma nge-VPN, okwenza inqubo yokuxhuma ibe lula. Iphasiwedi enezinhlamvu ezingu-6 kulula ukuyifaka kunaleyo enikezwe umgomo wokuphepha. Ngenxa yalokho, inani lamathikithi anesihloko esithi: "Angikwazi ukuxhuma ku-VPN" liyehla.

PS Sihlela ukuthuthukisa lesi sixazululo ekuqinisekiseni okugcwele kwezinto ezimbili ngokuphendula inselele.

buyekeza:

Njengoba ngithembisile, ngiyishintshele kunketho yokuphendula inselele.
Ngakho:
Kufayela /etc/raddb/sites-enabled/default ingxenye gunyaza kubukeka kanjena:

authorize {
    filter_username
    preprocess
    auth_log
    chap
    mschap
    suffix
    eap {
        ok = return
    }
    files
    -sql
    #-ldap
    expiration
    logintime
    if (!State) {
        if (&User-Password) {
            # If !State and User-Password (PAP), then force LDAP:
            update control {
                Ldap-UserDN := "%{User-Name}"
                Auth-Type := LDAP
            }
        }
        else {
            reject
        }
    }
    else {
        # If State, then proxy request:
        group_authorization
    }
pap
}

Ingxenye qinisekisa manje kubukeka kanje:

authenticate {
        Auth-Type PAP {
                pap
        }
        Auth-Type CHAP {
                chap
        }
        Auth-Type MS-CHAP {
                mschap
        }
        mschap
        digest
        # Attempt authentication with a direct LDAP bind:
        Auth-Type LDAP {
        ldap
        if (ok) {
            update reply {
                # Create a random State attribute:
                State := "%{randstr:aaaaaaaaaaaaaaaa}"
                Reply-Message := "Please enter OTP"
                }
            # Return Access-Challenge:
            challenge
            }
        }
        pam
        eap
}

Manje ukuqinisekiswa komsebenzisi kwenzeka ngokuya nge-algorithm elandelayo:

Umsebenzisi ufaka amakhredithi esizinda kuklayenti le-VPN.
I-Freeradius ihlola ubuqiniso be-akhawunti nephasiwedi
Uma igama eliyimfihlo lilungile, khona-ke isicelo sethokheni sithunyelwa.
Ithokheni iyaqinisekiswa.
inzuzo).

Source: www.habr.com

Freeradius + Google Autheticator + LDAP + Fortigate

Ngakho inikezwe

Ukusetha amasevisi

Qinisa ukusetha:

buyekeza:

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