user123456's questions

I have set up a vsftp server with anonymous access. vsftpd.conf contains the following:

anon_root=/var/www/ftp/
secure_chroot_dir=/var/www/ftp
local_root=/var/www/ftp

After login in as anonymous, the ls command is successful executed but doesn't show any in my files contained in /var/www/ftp. I suppose that this is because the ftp root directory is not set properly. Am I correct?

# cat /etc/vsftpd.conf

listen=NO
listen_ipv6=YES
anonymous_enable=YES
anon_root=/var/www/ftp/
local_enable=YES
write_enable=YES
anon_upload_enable=YES
anon_mkdir_write_enable=YES
dirmessage_enable=YES
use_localtime=YES
xferlog_enable=YES
connect_from_port_20=YES
chown_uploads=YES
chown_username=root
ascii_upload_enable=YES
secure_chroot_dir=/var/www/ftp
pam_service_name=vsftpd
rsa_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
ssl_enable=NO
local_root=/var/www/ftp

How to send mails with URL with swaks. For instance, how would you to send the following mail?

link

I tried without sucess

swaks -t [email protected] \
--body link<https://en.wikipedia.org/wiki/Main_Page>

Since it is what appear if we display the message as a raw message.

I have tried multiple ways to authenticate to gmail to send an email with swaks without success.

Is there a way to send a email through gmail with swaks

• A machine has a DNS set to 8.8.8.8
• The network router has an ad hoc DNS running (say dnsmasq)

Which iptables rules allows to fake the response from the remote server 8.8.8.8 with the local router DNS?

For instance, if the router DNS is associating google.fr to the IP of google.co.uk, I want to be able to see this from the router (192.168.1.2 is the ansewer)

# dnsspoof
192.168.1.2.38072 > 8.8.8.8.53:  31752+ A? google.fr
8.8.8.8.53 > 192.168.1.2.38072: 31752+ A google.co.uk

I am attempting to send emails between 2 machines with postfix running on both of them.

The variables myhostname is properly set to hostname-1 and hostname-2 respectively in /etc/postfix/main.cf:

$ swaks --to user2@hostname-2 --from user1@hostname-1
$ swaks --to root@hostname-2    
=== Trying hostname-2:25...
*** Error connecting to hostname-2:25:
***     IO::Socket::INET6: getaddrinfo: No address associated with hostname

What is missing here and how to send emails between local machines using their hostnames?

PS: I am able to send mail by connecting with telnet on port 25 in the 2 directions.

If my server is at example.com, running

$ wget example.com

will only download the file index.html. How can I make wget either

• download another file instead of index.html
• download this file along index,html

I have all redirection I could find pubkey.asc is my file):

1. <meta http-equiv="Refresh" content="seconds; url=pubkey.asc "> 
   

2.  <script language="javascript">
   window.location.href = "http://example.com"
   

3. <link rel="canonical" href="pubkey.asc"/>
   

4. <script> document.location.href="pubkey.asc";</script>
   

5. <script>window.location.href='pubkey.asc';</script>

6. <meta http-equiv="refresh" content="0; url=pubkey.asc" />
   

PS: I am posting here instead of web.stackexchange since wget mechanism is involved.

Given a named pipe, how can I send a continuous stream of this pipe through ssh?

The netcat equivalent of what I am looking for is

• from client

  dd if=myfifo | nc -l 12345
  

• from server

  nc <client IP> 12345 > stream
  

I can display the source and destination tcp ports with

tshark -T fields -e tcp.port
1111,2222
2222,1111
[...]

How can I display only the source port in order to get

1111
2222

The samba address is given by

//<server>/<service>

Knowing the BIOS name <server>, how do I get to know the <service> field remotely (other machine than the server)?

To get nmap results, one has to wait for the end of the scan.

How can I force nmap to gradually display the newly found hosts and open ports while it is running?

What is the straighest way of finding IP linked to a particular process on a Linux machine?

The task is straightforward if the port used by the process is exclusively reserved for this process: I would find packets linked to the process by filtering the packet capture to that port.

It becomes however less obvious when the port of interest is used by several processes at the same time.

How can I discriminate the packets sent of received by one specific chosen process in this case?