Ask Ubuntu General Room

12:13 AM

Fixed it by booting with a Live usb, then reconfigured /etc/fstab UUID to match the 188... ID reported. Now can boot into ubuntu, however graphics seems stuffed up haha can't recongise multiple monitors and resolution is wrecked :')

Thomas Ward

1:35 AM

oops :/

Conor

Can not get UFW to open a custom TCP port

$ sudo ufw allow 6666/tcp

$ sudo ufw disable
$ sudo ufw enable

$ netstat -l
tcp 0 0 *:6666 *:* LISTEN

what else am I missing?

Thomas Ward

what're you trying to access that port with

Conor

1:53 AM

an internal applicaiton

@ThomasWard znc

Thomas Ward

don't run ZNC on 6666

Conor

Ok, I can run it on any port just my ufw is not allowing me to telnet to it

Thomas Ward

and that's not what i was asking, my question was what are you using to get to port 6666 on the target machine (if it's an IRCd you're connecting to, that's one thing, but if you're connecting to ZNC with port 6666 Chrome, Firefox, etc. are all going to complain and yell because it's not a 'web-safe port')

can you telnet to it from that box itself?

Conor

Yes, $ telnet 127.0.0.1 6666 works

@ThomasWard I'm testing with telnet but will use an IRC client like LimeChat

I had it working once with iptables but everytime it restarted I had to re-add it.

Thomas Ward

well that's because you have to install iptables-persistent and save rules to /etc/iptables/rules.v4 so they are autoreloaded on boot every time

:P

UFW is weird

because it has some additional rules and such that aren't exposed to the end user

Conor

2:01 AM

Oh good point. Should I $ sudo apt-get remove iptables-persistent?

Thomas Ward

you should probably stick to either iptables or ufw and not try and mix and match.

do me a favor, sudo iptables-save. Copy-paste the output here or into a pastebin. paste.ubuntu.com works.

I personally prefer iptables because reasons but meh

i do some pretty advanced stuff on my systems too so... can't do that with ufw ;)

Conor

@ThomasWard paste.ubuntu.com/26420228

Thomas Ward

ah UFW hasn't added the rule it looks like heh

Conor

Isn't it on line 147?

Thomas Ward

ah yep you're right my bad (I'm really tired)

TBH all that extra cruft ufw adds makes interpreting these firewall rules difficult heh

Conor

2:15 AM

Yeah can't I reset it and start over?

@ThomasWard or what can I do to set it up right?

Thomas Ward

do you want to use UFW or no?

that's question #1 AND determines what my answer is :)

Conor

Whatever works

and permanent ;)

Thomas Ward

anything other than 6666 you also want to accept?

i'm lazy and don't want to read through ufw ;)

Conor

2:31 AM

well the standards

22, 53, 80, 443,

53 is outgoing dns

Thomas Ward

that won't be restricted by my rules i'm writing up

i don't restrict outgoing, typically.

and only need to accept port 53 UDP if I"m running a DNS server.

start by removing ufw. Then keep iptables-persistent installed.

put this into /etc/iptables/rules.v4:

# Generated by iptables-save v1.6.0 on Fri Jan 19 20:03:58 2018
*security
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
COMMIT
# Completed on Fri Jan 19 20:03:58 2018
# Generated by iptables-save v1.6.0 on Fri Jan 19 20:03:58 2018
*raw
:PREROUTING ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
COMMIT
# Completed on Fri Jan 19 20:03:58 2018
# Generated by iptables-save v1.6.0 on Fri Jan 19 20:03:58 2018
*nat
:PREROUTING ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]

run sudo iptables-restore < /etc/iptables/rules.v4

try that and see if that helps.

Conor

Delete everything that's there and replace?

Thomas Ward

if you want to keep a copy: sudo mv /etc/iptables/rules.v4 /etc/iptables/rules.v4.backup

that way you can then create a 'new' set of rules but have a backup version

Conor

@ThomasWard You're a genius!

How can I make sure they stay on reboot?

Thomas Ward

2:54 AM

they'll load up automatically from /etc/iptables/rules.v4 during the boot cycle, assuming you also remove ufw from the system or disable it in systemd. Assuming you keep iptables-persistent installed.

Conor

I did thanks so much

Thomas Ward

you're welcome.

Thomas Ward

3:12 AM

@Conor let me know if you have any questions about the rules, too, i'm happy to explain :)

otherwise, enjoy.

drifts back into the shadows

Ubuntu Questions on U&L

3:33 AM

0

Q: Mint and Ubuntu live disks, meltdown and spectre

Have the Mint and Ubuntu live disks been updated with the meltdown and spectre mitigations yet? I have no hard disk access, so can only use live disk CD. Thanks.

Ubuntu Questions on U&L

6:23 AM

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Q: No IP Address on eno1

I'm sad to say that although there are a ton of questions about no IP addresses, I can't seem to find a resolution to my specific scenario. I'm hoping that with a few technical details, someone can point this windows guy where he is going wrong. Problem: No IP address on new ethernet PCI-x card...

ubuntu networking network-interface docker

Ubuntu Questions on U&L

7:57 AM

1

Q: Lost files Recovery

last night i made a horrible mistake on my ubuntu 14.04 machine. i accidently deleted some of my project codes, actually i deleted the whole javascript folder. all files where in .js format i've searched the web for a solution, i tried every tools out there. i tried photorec(testdisk), foremost, ...

ubuntu data-recovery restore

cl-netbox

1:03 PM

@ParanoidPanda Glad to read that ! :)

user136984

1:20 PM

@cl-netbox: Hi! :)

cl-netbox

2:20 PM

@ParanoidPanda Good afternoon ! :)

Rinzy ! :) Good afternoon @Rinzwind ! :)

Rinzwind

\o

cl-netbox

@Rinzwind Everything "back to normal" after the storm ?

Rinzwind

3:08 PM

yeah

cl-netbox

@Rinzwind good :)

Ask Ubuntu Meta

3:50 PM

0

Q: Naming, and other differences between Canonical's USN pages, and CVE tracker pages

I have a question that I don't know if I'm supposed to post it in Ask Ubuntu as it is mostly about Canonical's websites. The question follows: I ran a vulnerability detection scan on some Ubuntu servers. In the scan results I saw references to both: https://usn.ubuntu.com/usn/ and https://peop...

discussion review asking-questions

chaskes

4:13 PM

@Seth I like articles that conform to my opinions: linux.com/blog/learn/intro-to-linux/2018/1/…

TheWanderer

4:50 PM

guh

I just spent 30 minutes importing a class for word capitalization

Ubuntu Questions on U&L

0

Q: apt update error

I keep getting this error whnever I run sudo apt update E: The repository 'http://archive.ubuntu.com/ubuntu wily Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository cr...

ubuntu apt upgrade

Trevor

5:21 PM

Hello, I am have Ubuntu server enabled on a dualboot setup. Once installed I can get into Ubuntu server just fine, but then I try to enable my wifi adapter and after that when I restart I ubuntu stalls and just sits there on a black screen. If click the reset button my tower then all of a sudden ubuntu can move forward but that point the computer is resetting and so it goes away...

Any ideas?

Arcticooling

6:05 PM

"$myArg" or ${myArg} --- which one will you say is more common and maybe a "best practice"? Thanks,

Thomas Ward

@Arcticooling both

it depends what you're trying to do

(there's also the hybrid of "${myArg}" too)

Arcticooling

Yes

Hmm,
I desire to expand a variable in a command:
for dir in "$drt"/html/*/;

for dir in "$drt"/*/;

Also this: alias drt="cd $drt"

alias drt="cd $drt/"

Sorry and sorry

Chai T. Rex

6:52 PM

Does anyone know if SMART tests work by default with SSDs on 17.10 (they're not supported on 16.04, at least with my SSD)?

Or maybe NVMe support.

Oh, never mind. NVMe support is added in smartmontools 6.5, and that's in 17.10.

Nathan Osman

8:39 PM

28

Q: How can I restore power after a switch was shorted with scissors?

Ok, so I'm a 15 year old kid and my parents werent home, my house is under construction and I wanted to see what would happen if I put scissors to my light switches, so I took the pair of scissors and I put it to the light switch on the hot side and It sparked really big and really loud, and now ...

electrical

Wha...

> "...my house is under construction and I wanted to see what would happen if I put scissors to my light switches..."

I mean, what could go wrong, right?

SMH.

IanC

10:47 PM

LOL

have you guys tried to look for recursion on google?

and I clicked on it twice before realizing it was a joke and not a type lol

btw, that's not my screen, kind of looks like IE and that's something I want very far away from me

Ask Ubuntu Meta

11:40 PM

0

Q: What are the limits for answer and question lengths?

What are the limits to which answers and questions can be pushed ? I've written quite lengthy answers in the past which seem to be quite complete, but lets pretend there's a question which requires drawing on whole lot of context, whole lot of research, and whole lot of in-depth explanation, may...

discussion answers asking-questions

TheWanderer

reddit.com/r/pics/comments/7rt36m/…

Hue

@IanC it looks like 2003

Fabby

@IanC starred!

IanC

I laughed by myself when I realized it here :p

Fabby

@NathanOsman Experimental scientist!

TheWanderer

@NathanOsman OK, if you're 10- I can understand this

but 15????

Fabby

11:53 PM

@TheWanderer He's probably 10 or has no clue about basic Physics.

TheWanderer

he says he's 15

Fabby

(when I was a kid we got that stuff in physics class at 14.)

@TheWanderer yeah, and what does this site say when you sing up.? Min 13, right?

TheWanderer

13

Fabby

So when you're 10, just say you're 15...

TheWanderer

SWERG

Sergiy Kolodyazhnyy

11:54 PM

printf "%s\n" "Hello Chat"

Fabby

@SergiyKolodyazhnyy :D Starred!

TheWanderer

are you here to stay?

Fabby

Define "You"... >:-)

Sergiy Kolodyazhnyy

It will depend on a few things, but you can expect me to come back for bash questions

I'm no longer Ubuntu user, though

TheWanderer

@Fabby swergiy

@SergiyKolodyazhnyy lots of people here are using Arch now

Sergiy Kolodyazhnyy

11:56 PM

I'm on Deepin

TheWanderer

that's basically Ubuntu

Sergiy Kolodyazhnyy

Ubuntu-based, but UI is different. My indicators still work there though. I was contacted by a guy from Deepin testing team who had an issue with my Udisks indicator. Turns out he was using an outdated version of it

TheWanderer

hehe

oooh

twenty one pilots as hold music on TMO

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Ask Ubuntu General Room