Changing from FTP to SFTP server Post: 302831033

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Top Forums UNIX for Dummies Questions & Answers Changing from FTP to SFTP server Post 302831033 by bakunin on Wednesday 10th of July 2013 04:49:14 AM

07-10-2013

Registered User

To expand on what zaxxon explained:

With "ftp" you:

connect to the other server
are asked for a username
supply this
are asked for a password
supply this
send one (or some) commands as now authenticated user
close the connection

With "sftp" you:

exchange ssh-keys instead of user/password before you even attempt to transfer files. You do this only once. The "session" itself is:

connect to the other server
system automatically supplies the authenticating key
send one (or some) commands as now authenticated user
close the connection

The advantage is: you do not have to put passwords in clear text into scripts. Instead you exchange a secret (keys) once and then use these automatically. These secrets are not being sent in clear text over the network either (unlike "ftp", where passwords are transferred that way), which further enhances security: nobody listening on the network can collect the secret and then use it himself.

Things you have to consider: if you have a firewall between the two systems make sure you have the necessary ports opened. "sftp" operates (usually - can be configured) on another port than "ftp" (usually) does.

I hope this helps.

bakunin

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LEARN ABOUT MOJAVE

curlinfo_ftp_entry_path

CURLINFO_FTP_ENTRY_PATH(3)				     curl_easy_getinfo options					CURLINFO_FTP_ENTRY_PATH(3)

NAME

       CURLINFO_FTP_ENTRY_PATH - get entry path in FTP server

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_FTP_ENTRY_PATH, char **path);

DESCRIPTION

       Pass  a	pointer  to  a	char pointer to receive a pointer to a string holding the path of the entry path. That is the initial path libcurl
       ended up in when logging on to the remote FTP server. This stores a NULL as pointer if something is wrong.

       The path pointer will be NULL or pointing to private memory you MUST NOT free - it gets freed when you  call  curl_easy_cleanup(3)  on  the
       corresponding CURL handle.

PROTOCOLS

       FTP(S) and SFTP

EXAMPLE

       TODO

AVAILABILITY

       Added in 7.15.4. Works for SFTP since 7.21.4

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       curl_easy_getinfo(3), curl_easy_setopt(3),

libcurl 7.54.0							 February 03, 2016					CURLINFO_FTP_ENTRY_PATH(3)

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