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- - pure-ftp woes (http://www.howtoforge.com/forums/showthread.php?t=10014)

Hi there

I set up my server a couple of months ago and used the pure-ftp with mysql how to on the site and my server has been a happy camper until about 2 weeks ago, 2 events occurred not sure which one borked the server though.

The first was an update via apt-get upgrade, the second was someone trying to brute force the server, looked like a zombie script. So I turned off the server as it was not needed for a day or so then fired it up again

Once it was up I noticed the following. When I try and connect (I use filezilla as a client) i get the following

Code:

Status:        Connecting to <server> ...

Status:        Connected with <server>. Waiting for welcome message...

Response:        220---------- Welcome to Pure-FTPd ----------

Response:        220-You are user number 1 of 50 allowed.

Response:        220-Local time is now 17:16. Server port: 21.

Response:        220-IPv6 connections are also welcome on this server.

Response:        220 You will be disconnected after 15 minutes of inactivity.

Command:        USER <user>

Response:        331 User <user> OK. Password required

Command:        PASS ********

Response:        230-User <user>has group access to:  ftpgroup

Response:        230 OK. Current restricted directory is /

Command:        FEAT

Response:        211-Extensions supported:

Response:         EPRT

Response:         IDLE

Response:         MDTM

Response:         SIZE

Response:         REST STREAM

Response:         MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;

Response:         MLSD

Response:         ESTP

Response:         PASV

Response:         EPSV

Response:         SPSV

Response:         ESTA

Response:        211 End.

Command:        SYST

Response:        215 UNIX Type: L8

Status:        Connected

Status:        Retrieving directory listing...

Command:        PWD

Response:        257 "/" is your current location

Command:        TYPE A

Response:        200 TYPE is now ASCII

Command:        PASV

Response:        227 Entering Passive Mode (88,198,5,149,192,40)

Command:        LIST

Error:        Transfer channel can't be opened. Reason: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.

Error:        Could not retrieve directory listing

Command:        REST 0

Error:        Timeout detected!

Status:        Waiting to retry... (5 retries left)

I thought it may initially be an issue with my user but it seems to affect all users, the other thing I did notice is that the virtual ftp user has no write access on their directory, and I have to manually chmod/chown the directory this however has been around since day 1 of my install.

The actual ftp user is set to "No login allowed" in webmin and their home directory is set to /bin/null, and the virtual ftp users UID & GID are correct, I am at a bit of a loss here, any tips?

I think it's caused by the

Code:

apt-get upgrade

, but anyway you should check your system for rootkits: http://www.howtoforge.com/faq/1_38_en.html

I do every 4 hours ;)

this is my output

Code:

ROOTDIR is `/'

Checking `amd'... not found

Checking `basename'... not infected

Checking `biff'... not found

Checking `chfn'... not infected

Checking `chsh'... not infected

Checking `cron'... not infected

Checking `crontab'... not infected

Checking `date'... not infected

Checking `du'... not infected

Checking `dirname'... not infected

Checking `echo'... not infected

Checking `egrep'... not infected

Checking `env'... not infected

Checking `find'... not infected

Checking `fingerd'... not found

Checking `gpm'... not found

Checking `grep'... not infected

Checking `hdparm'... not found

Checking `su'... not infected

Checking `ifconfig'... not infected

Checking `inetd'... not infected

Checking `inetdconf'... not infected

Checking `identd'... not found

Checking `init'... not infected

Checking `killall'... not infected

Checking `ldsopreload'... not infected

Checking `login'... not infected

Checking `ls'... not infected

Checking `lsof'... not found

Checking `mail'... not infected

Checking `mingetty'... not found

Checking `netstat'... not infected

Checking `named'... not infected

Checking `passwd'... not infected

Checking `pidof'... not infected

Checking `pop2'... not found

Checking `pop3'... not found

Checking `ps'... not infected

Checking `pstree'... not infected

Checking `rpcinfo'... not infected

Checking `rlogind'... not found

Checking `rshd'... not found

Checking `slogin'... not infected

Checking `sendmail'... not infected

Checking `sshd'... not infected

Checking `syslogd'... not infected

Checking `tar'... not infected

Checking `tcpd'... not infected

Checking `tcpdump'... not infected

Checking `top'... not infected

Checking `telnetd'... not found

Checking `timed'... not found

Checking `traceroute'... not found

Checking `vdir'... not infected

Checking `w'... not infected

Checking `write'... not infected

Checking `aliens'... no suspect files

Searching for sniffer's logs, it may take a while... nothing found

Searching for HiDrootkit's default dir... nothing found

Searching for t0rn's default files and dirs... nothing found

Searching for t0rn's v8 defaults... nothing found

Searching for Lion Worm default files and dirs... nothing found

Searching for RSHA's default files and dir... nothing found

Searching for RH-Sharpe's default files... nothing found

Searching for Ambient's rootkit (ark) default files and dirs... nothing found

Searching for suspicious files and dirs, it may take a while... nothing found

Searching for LPD Worm files and dirs... nothing found

Searching for Ramen Worm files and dirs... nothing found

Searching for Maniac files and dirs... nothing found

Searching for RK17 files and dirs... nothing found

Searching for Ducoci rootkit... nothing found

Searching for Adore Worm... nothing found

Searching for ShitC Worm... nothing found

Searching for Omega Worm... nothing found

Searching for Sadmind/IIS Worm... nothing found

Searching for MonKit... nothing found

Searching for Showtee... nothing found

Searching for OpticKit... nothing found

Searching for T.R.K... nothing found

Searching for Mithra... nothing found

Searching for OBSD rk v1... nothing found

Searching for LOC rootkit... nothing found

Searching for Romanian rootkit... nothing found

Searching for Suckit rootkit... nothing found

Searching for Volc rootkit... nothing found

Searching for Gold2 rootkit... nothing found

Searching for TC2 Worm default files and dirs... nothing found

Searching for Anonoying rootkit default files and dirs... nothing found

Searching for ZK rootkit default files and dirs... nothing found

Searching for ShKit rootkit default files and dirs... nothing found

Searching for AjaKit rootkit default files and dirs... nothing found

Searching for zaRwT rootkit default files and dirs... nothing found

Searching for Madalin rootkit default files... nothing found

Searching for Fu rootkit default files... nothing found

Searching for ESRK rootkit default files... nothing found

Searching for rootedoor... nothing found

Searching for ENYELKM rootkit default files... nothing found

Searching for anomalies in shell history files... nothing found

Checking `asp'... not infected

Checking `bindshell'... INFECTED (PORTS:  1524 6667 31337)

Checking `lkm'... chkproc: nothing detected

Checking `rexedcs'... not found

Checking `sniffer'... eth0: not promisc and no PF_PACKET sockets

Checking `w55808'... not infected

Checking `wted'... chkwtmp: nothing deleted

Checking `scalper'... not infected

Checking `slapper'... not infected

Checking `z2'... chklastlog: nothing deleted

Checking `chkutmp'... chkutmp: nothing deleted

Not sure what port 1524 is but the machine is behaving.

So what suggestions then a fresh install or move to something like vsftp? Multiple accounts are not mission critical on my server

Quote:

Originally Posted by d3th_n1gG4

Not sure what port 1524 is but the machine is behaving.

Do you use Portsentry? If so, I'm sure the message is caused by Portsentry.

Quote:

Originally Posted by d3th_n1gG4

So what suggestions then a fresh install or move to something like vsftp? Multiple accounts are not mission critical on my server

If it isn't too much hassle, I'd reinstall the system. And remember: never touch a running system. ;) (Or at least have a backup before you do.)

yes I do use portsentry

As tempting as a reinstall is its a bit of a bugger to do considering I have no failover system. Thanks for the advice anyways :)