diff --git a/ntlm/ntlmv2.go b/ntlm/ntlmv2.go
index 899abe1..44d844a 100644
--- a/ntlm/ntlmv2.go
+++ b/ntlm/ntlmv2.go
@@ -6,10 +6,8 @@ import (
 	"bytes"
 	rc4P "crypto/rc4"
 	"encoding/binary"
-	"encoding/hex"
 	"fmt"
 	"log"
-	"os/exec"
 	"strings"
 	"time"
 
@@ -246,24 +244,6 @@ func (n *V2ServerSession) ProcessAuthenticateMessage(am *AuthenticateMessage) (e
 		return err
 	}
 
-	hexServerChallenge := hex.EncodeToString(n.challengeMessage.ServerChallenge)
-	hexNTLMClienteChallenge := hex.EncodeToString(am.NtlmV2Response.Response)
-	hexClientChallenge := hex.EncodeToString(n.clientChallenge)
-
-	log.Printf("DEBUG: challenge Server: %s\n", hexServerChallenge)
-	log.Printf("DEBUG: ntChallengeResponse: %s\n", hexNTLMClienteChallenge)
-	log.Printf("DEBUG: ClientChallenge: %s\n", hexClientChallenge)
-
-	// Execute ntlm_auth to check user auth
-	cmd := exec.Command("/usr/local/bin/ntlm_auth", "--domain="+n.userDomain, "--username="+n.user, "--challenge="+hexServerChallenge, "--nt-response="+(hexNTLMClienteChallenge+hexClientChallenge))
-	output, err := cmd.CombinedOutput()
-	if err != nil {
-		fmt.Printf("Failed to execute command: %s\n", err)
-		return
-	}
-
-	log.Printf("ntlm_auth Output: %s\n", output)
-
 	// Check user auth using LDAP
 	if n.password != "" {
 		_, err = authLdap(n.user, n.password)