-
Security
Hi Gurus,
I just installed Knoppix 3.3 on my HDD. It works incredibly well, but I have a problem with the security level. I do use Knoppix to connect on other unix servers (Sun, HP, ...) and develop on those machines. The trouble is that a telnet works ok but I can't run any graphical interface because of DISPLAY not reachable. However, I have defined and exported the DISPLAY as found in 'ifconfig'. I have also enabled external display through 'xhost +'. Finally, I've found in /etc/hosts.allow and /etc/hosts.deny that the config was set up as 'PARANOID'. I've renamed both files (according to the man page, lack of file opens the connection). As long as I do not run a server but a workstation, security is not a major constraint for me. I'm missing a config file somewhere to enable DISPLAY to pass through but where. While testing, I realized that even assigning the IP address to the user knoppix (rather than the hos name) causes the same problem.
Could anyone help on this ?
TIA,
Pierre
-
Senior Member
registered user
Umm, why would you want to use telnet in the first place ?
ssh is safer and it is handy also in places where you don't need security.
-
Originally Posted by
windos_no_thanks
Umm, why would you want to use telnet in the first place ?
ssh is safer and it is handy also in places where you don't need security.
Good question I didn't ask myself, but I assume it would make no difference in the current situation: graphical apps can't open the display and do abort. You could test it youself:
1) 'ifconfig' to determine your IP address
2) export DISPLAY=IP address:0.0 (192.168.1.10:0.0 for example)
3) 'xclock' returns Error: Can't open display: ...
Any idea?
TIA,
Pierre
-
Senior Member
registered user
Originally Posted by
pierrevn
Originally Posted by
windos_no_thanks
Umm, why would you want to use telnet in the first place ?
ssh is safer and it is handy also in places where you don't need security.
Good question I didn't ask myself, but I assume it would make no difference in the current situation: graphical apps can't open the display and do abort. You could test it youself:
1) 'ifconfig' to determine your IP address
2) export DISPLAY=IP address:0.0 (192.168.1.10:0.0 for example)
3) 'xclock' returns Error: Can't open display: ...
Any idea?
TIA,
Pierre
You are looking for the setting nolisten tcp in the file /etc/kde3/kdm/Xservers if you are doing this in KDE.
[edit]
You would have to restart kdm for the changes to take effect with /etc/init.d/kdm restart as root this best done from a console login unless you want to lose any unsaved work when KDE re-starts.
[/edit]
-
Thanks to you, Stephen: I removed this 'nolisten tcp' from the file and it works now as I expect. Great!
Cheers,
Pierre
-
Senior Member
registered user
Originally Posted by
pierrevn
Originally Posted by
windos_no_thanks
Umm, why would you want to use telnet in the first place ?
ssh is safer and it is handy also in places where you don't need security.
Good question I didn't ask myself, but I assume it would make no difference in the current situation: graphical apps can't open the display and do abort. You could test it youself:
1) 'ifconfig' to determine your IP address
2) export DISPLAY=IP address:0.0 (192.168.1.10:0.0 for example)
3) 'xclock' returns Error: Can't open display: ...
Any idea?
TIA,
Pierre
I see you already got it working but using ssh should have made a difference. Using the -X switch (by default on in knoppix so you usually don't need to specify it) ssh forwards the
X connections through the encrypted pipe. The application on the remote machine thinks
it is using a display on the same machine, your X-server also thinks the application is on the
same machine as itself and everyone is happy.
Similar Threads
-
By eadz in forum Hdd Install / Debian / Apt
Replies: 11
Last Post: 11-04-2010, 09:02 PM
-
By NetKatz in forum Hdd Install / Debian / Apt
Replies: 2
Last Post: 05-02-2004, 02:38 PM
-
By RNK in forum Customising & Remastering
Replies: 13
Last Post: 04-29-2004, 12:37 PM
-
By Edix in forum Hdd Install / Debian / Apt
Replies: 1
Last Post: 11-10-2003, 08:20 PM
-
By kipizit in forum General Support
Replies: 1
Last Post: 11-07-2003, 03:08 AM
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
Dell PowerEdge R720 Server - 2x8c CPU,256Gb RAM, 128Gb SSD/3x900Gb SAS, Proxmox
$340.00
Supermicro 4U 36 Bay Storage Server 2.4Ghz 8-C 128GB 1x1280W Rails TrueNAS ZFS
$712.98
DELL PowerEdge R730XD 24x 2.5" Server Dual 750W Dual Heatsink - BareBones TESTED
$269.99
Dell Poweredge R640 Server | 2x Xeon Gold 6132 | 128GB | H730P | 8x HDD Trays
$1849.00
Dell PowerEdge R620 Server 2x E5-2660 v1 2.2GHz 16 Cores 256GB RAM 2x 300GB HDD
$89.99
Dell PowerEdge R730XD 28 Core Server 2X Xeon E5-2680 V4 H730 128GB RAM No HDD
$389.99
SuperMicro Server 505-2 Intel Atom 2.4GHz 8GB RAM SYS-5018A-FTN4 1U Rackmount
$202.49
HP ProLiant DL360 G9 2x Xeon E5-2690 V3 24 Cores 2.6GHz P440ar 32GB DDR4
$119.99
DELL PowerEdge R730 Server 2x E5-2680v4 2.4GHz =28 Cores 32GB H730 4xRJ45
$284.00
PowerEdge R710 Rackmount Server 80GB RAM 2x XEON E5520 CPU 4.75TB
$200.00