Questions tagged [openwrt]

A GNU/Linux based firmware program for embedded devices such as residential gateways and routers.

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29
votes
3answers
58k views

How do I upgrade all of my installed packages in LEDE?

I'm just wondering what is the equivalent of apt-get upgrade apt upgrade yum update with OpenWRT or LEDE?
22
votes
2answers
26k views

Human readable dmesg time stamps on OpenWRT

The output of dmesg shows the number of second+milliseconds since the system start. [ 10.470000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 14.610000] device eth0 entered ...
21
votes
1answer
17k views

Linux find WiFi Networks protocol(a/b/g/n) version of all available access points

I do use iwlist wlan0 scanning and it gives me a fair amount of data, but one part is missing. It is protocol version. By protocol I mean (a/b/g/n). It would be very good to have these commands in ...
19
votes
5answers
24k views

Zero-fill numbers to 2 digits with sed

Input: 201103 1 /mnt/hdd/PUB/SOMETHING 201102 7 /mnt/hdd/PUB/SOMETH ING 201103 11 /mnt/hdd/PUB/SO METHING 201104 3 /mnt/hdd/PUB/SOMET HING 201106 1 /mnt/hdd/PUB/SOMETHI NG Desired output: 201103 01 ...
16
votes
4answers
29k views

How to know disk space occupied by packages in OpenWrt?

I am trying to configure OpenWrt on my device and got out of space. I was downloading some tooling packages. Now how can I determine their weights so that decide what to uninstall? Is it possible to ...
10
votes
2answers
25k views

How to setup PPPoE with OpenWrt

Probably this is a simple question, but I can't find an answer... I have an ADSL router (Dlink DSL-524T) which runs OpenWrt Backfire 10.03.1. It connects to the internet using PPPoA: this is my /etc/...
9
votes
2answers
23k views

“invalid tar magic” on OpenWRT

I'm trying to install JavaSE on a OpenWrt (Pandorabox) device. When I run tar -xvf ejdk-8u65-linux-arm-sflt.tar.gz I get tar: invalid tar magic. How can I solve this problem?
9
votes
2answers
22k views

Configure OpenWRT as repeater [closed]

At home I'd like to configure one of my wifi routers to serve as a WI-FI signal extender. Since my main router is OpenWrt-based (Backfire 10.1.3), I'd like to use it for that purpose. I've looked ...
7
votes
1answer
7k views

The n mode on “iwlist wlan0 scan”

I know how to determine if scanned AP uses B or G mode, but how to know (using "iwlist wlan0 scan") it uses N protocol ? if I use "iw dev wlan0 scan" and see if the cell has a "HT capabilities" block. ...
7
votes
5answers
13k views

How to apply new wireless settings on an OpenWRT router without rebooting it?

After I manually edit the: vi /etc/config/wireless file, what should I do to apply the modifications? Until this day I rebooted the router, but aren't there any better solutions? (and no, www is ...
7
votes
1answer
12k views

Have someone ever audited the default OpenWrt firewall rules?

I have an Openwrt 10.03.1 installed from: openwrt-ar71xx-wrt160nl-squashfs-factory.bin (firewall only customized with this: sed 's/REJECT/DROP/g' /etc/config/firewall) - so besides this, IT'S A ...
7
votes
0answers
774 views

What is the difference between NFTables and BPFilter? [closed]

I trying to secure my home network with OpenWRT routers. In this context I started to customize my iptables rules to my needs and found some iptables concepts hard to understand. I've discovered ...
6
votes
2answers
14k views

How does NAT reflection (NAT loopback) work?

I use the auto generated rules that come from OpenWRT as an example of NAT reflection (NAT loopback). So let's pretend there's a network 192.168.1.0/24 with two hosts (+ router): 192.168.1.100 and ...
6
votes
2answers
11k views

How to extend my wireless network with OpenWrt

I have two routers, both running OpenWRT 10.04 The first is a WRT160NL router connected to my ISP. I am using it as an access point with the ESSID of "160AP". It's WEP password is "AAAAA" and it's ...
5
votes
4answers
11k views

bash / sh script to replace text between some tags/strings in a text file

I am creating executable which will be executed with /bin/sh or /bin/bash script, I have a file which contains a structure like, there will be only one #start and #end tag in the config file, and I ...
5
votes
3answers
57k views

How to kill a process in shell script which is running through cron?

I have a shell script which runs in cronjob. This shell script has to kill a process which is running and start the new process again. When I run the script manually it works perfectly fine, but when ...
5
votes
4answers
12k views

dropbear ssh server won't let me connect

I'm trying to gain ssh access to my router. Currently I only have telnet access and I installed dropbear and is running (using opkg on a usb drive connected to the router). From the beginning, what I ...
5
votes
3answers
14k views

Do I want a Repeater or a Bridge? (OpenWrt)

I'm setting up a network with openwrt. I have a router that I have set up for wifi which I will use as an access point. I want to add another router to my network so that the two can exchange traffic ...
5
votes
2answers
2k views

Retrieve value of RTS threshold without iwconfig

Is there a way in OpenWrt to read the current value of the RTS threshold for a specific interface without installing iwconfig? What I'm looking for is the value of RTS thr that can be found in the ...
5
votes
2answers
4k views

OpenVPN on OpenWrt

I have a step-by-step guide for OpenVPN on an OpenWRT 10.03 router: (wl500gpv2) Needed packages opkg install openvpn_2.1.1-1_brcm-2.4.ipk kmod-tun_2.4.37.9-1_brcm-2.4.ipk libopenssl_0.9.8m-3_brcm-2....
5
votes
2answers
7k views

How to limit P2P/torrent traffic on an OpenWrt 10.03 router?

We have a WRT160NL router with OpenWRT 10.03, and a 60-70 Mbit connection (from ISP, don't ask why). This router can do 30-35 Mbit on ethernet(i mean cable)..ok! There are ~7 PC's using this Wireless ...
5
votes
1answer
2k views

OpenVPN and routing problem on OpenWRT

My home topology: router1 (192.168.1.1) - D-Link dsl2540u server with static IP available from Internet (ADSL via ppoe). 4 LAN ports. router2 (192.168.1.2) - D-Link DIR-300 with OpenWRT. Plays role ...
4
votes
6answers
6k views

Date in milliseconds on OpenWRT on Arduino YUN

I am using OpenWRT on the Arduino YUN and I am trying to get the exact date in milliseconds (DD/MM/YYYY h:min:sec:ms) by getting the time by an timeserver. Unfortunately date +%N just returns %N, but ...
4
votes
2answers
18k views

Where does make defconfig get its configuration in OpenWrt?

I am compiling an image for wifi devices using OpenWrt. Following the instruction I copy a simple .config file to TOP-DIR. CONFIG_TARGET_ar71xx=y CONFIG_TARGET_ar71xx_generic=y ...
4
votes
2answers
6k views

Disable SSH password authentication on specific interface

I have an OpenWrt router, I want to disable password authentication on SSH, so that one can only authenticate with keys. This is easily achieved by following the guide in the documentation, however, I ...
4
votes
1answer
11k views

How can I install bash package to OpenWrt without access to Internet?

I need to run a script in bash, and the only way to install bash package to OpenWrt that I have found now is "opkg install bash" , but I don't have Internet access for my router, for which I want to ...
4
votes
1answer
2k views

urlencode function

I need a way to URL encode strings with a shell script on a OpenWRT device running old version of busybox. Right now I ended up with the following code: urlencode() { echo "$@" | awk -v ORS="" '{ ...
4
votes
1answer
6k views

How to connect to OpenVPN with NetworkManager

I have installed an OpenVPN server on my OpenWrt 10.03 router [freshly flashed]: https://pastebin.com/raw.php?i=hRECWuf1 echo "nameserver 8.8.8.8" > /etc/resolv.conf; opkg update; opkg install ...
4
votes
5answers
8k views

How to make sense of an iptables chain configuration in OpenWrt

This is about how to make sense of the chains found in the iptables default configuration on a typical home router running OpenWrt (a stripped down Linux for router devices), but which ultimately may ...
4
votes
3answers
15k views

How to unlock read-only filesystem on OpenWRT router linux distribution?

I have installed minimal OpenWRT firmware on Linksys router. When I try to modify some of the files withing /etc/ directory for example firewall.user file by using command vi firewall.user it opens ...
4
votes
1answer
5k views

How to configure an OpenWrt 10.03 router to forward an IPv6 connection to the clients?

So I have a TL-WR1043ND router with OpenWrt 10.03 on it. I have clients connected to it through the LAN ports. My ISP provides me a /64 IPv6 block, and I'm using PPPoE authentication. How can I ...
4
votes
4answers
4k views

DNS Troubleshoot. Campus domain does not resolve when using campus network

I am having a very odd DNS issue. I live on-campus and the university provides Internet access with my rent, but I can not get access to the university websites. I am hoping to get direction on how to ...
4
votes
2answers
4k views

How do I use dhcpcd in openwrt instead of udhcpc?

I'm trying to determine the reason my router is not syncing up to my ISP, I do suspect snafu on their end so I'm trying to replicate my desktops setup which includes using dhcpcd. Problem is I don't ...
4
votes
1answer
1k views

How to measure traffic on OpenWRT 12.04

Since just doing a cronjob every morning, before the router reboots: ifconfig > "`date`.ifconfig.txt" isn't very effective, since after ~4 GByte's the counter in the ifconfig will go to zero. ...
4
votes
1answer
4k views

Tunnel openwrt requests

I am pretty new to OpenWrt what I want to achieve is the following scenario: I have a socks5 proxy server running on a machine which is at work. From my home I wish to configure my router which is ...
4
votes
1answer
4k views

udevadm rule works using “udevadm test” but not with “udevadm trigger”

I have created a simple rule called "99-usb.rules" that simply names a tty port of a specific device KERNEL=="ttyACM*", ATTRS{idVendor}=="2341", NAME="mydevice" This rule works fine when I run a ...
4
votes
2answers
2k views

Second OpenWRT network isn't getting an IP address

Goal I'd like to have two LANs: lan0 and lan1. lan0 is unencrypted traffic; lan1 will be an always-active VPN. I haven't configured the VPN, so it's currently just a second unencrypted network. I'...
4
votes
1answer
571 views

change ls color on OpenWrt

I am not able to change the color of dir entries for ls command (dark blu is a very annoying color to read) on my OpenWrt device. I've added the line LS_COLORS=$LS_COLORS:'di=0;37:' ; export ...
4
votes
1answer
727 views

Flash OpenWrt Routers from Telnet

I have two routers. One has Chaos Calmer and the other has Attitude Adjustment. When I turn them on and check arp, nothing comes up. When I check route, the hardware address says (incomplete) but the ...
4
votes
0answers
1k views

OpenWRT - route all the traffic through TOR

Passing through all the traffic in the router to TOR sounds like a good idea. But there aren't any good documentations about the implementation of this idea. Could anyone please explain, how can ...
3
votes
3answers
7k views

Traffic counter on openwrt?

Are there any (not a resource hog) solutions to have statistics about the traffic on an OpenWrt router? :O e.g.: traffic per IP address, monthly statistics, etc. :O
3
votes
1answer
510 views

Linux OpenWRT IPv6 Neighbor discovery

My ip -6 nei commands is showing available neighbors only after pinging them. Is there a way to populate the IPv6 neighbor table once the link is up and not only after traffic is being sent?
3
votes
1answer
249 views

Only output printable chars OpenWrt

perl is not a very good idea, because it's an OpenWrt router, so not enough space for it. "cat -v" doesn't works, because it doesn't supports the "-v" option Any ideas? :\ Here's a bad text: http://...
3
votes
1answer
7k views

mount overlayFS as Read-Write FS

I want to mount my RO Filesystem using overlayFS - in order to use two layers FS (Lowerdir and Upperdir). I tried the following mounting command - mount -t overlayfs -o lowerdir=/,upperdir=/overlay "...
3
votes
2answers
6k views

How do I reimage OpenWRT?

How do I reimage openwrt in such a way that all my settings will be lost. I've been having some issues, and I want to ensure that it's not a lingering setting, I want this to be a fresh install.
3
votes
1answer
2k views

OpenWRT: Reset iptables to default settings

I somehow cleared all my iptables rules by accident (details below). In the Web-Access, all settings under "Network->Firewall" are now empty, except for some lines in "Custom Rules" that I had added. ...
3
votes
1answer
2k views

OpenWrt (Chaos Calmer 15.05.1): `opkg install <package> -d ram` is failing

When I try to install python-xml using opkg install python-xml -d ram It goes through the following steps: Installing... [WORKS] Downloading... [WORKS] Configuring... [FAILS] The "configuring" step ...
3
votes
2answers
2k views

iptables -I FORWARD -j DROP does not cut existing connections

I have a router with openwrt. I want to temporarily cut all transit traffic without changing the router's configuration. I do this: iptables -I FORWARD -j DROP New connections cannot be established ...
3
votes
2answers
4k views

Unable to launch the requested CGI program: /www/cgi-bin/first.cgi: Text file busy

I'm trying to make a very simple shell script to run as a CGI on a uhttpd server running on an OpenWRT install. The file is called /www/cgi-bin/first.cgi and looks like... #!/bin/sh echo "Content-...
3
votes
2answers
4k views

Limit the max connections per IP using OpenWRT?

Would the following iptables command on an OpenWRT router assure that no one client has more than 50 active connections? $ iptables -I FORWARD -m connlimit --connlimit-above 50 -j REJECT --reject-...

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