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Questions tagged [openwrt]

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

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5
votes
2answers
13k 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 ...
1
vote
2answers
5k views

How can I update my dynamic DNS under OpenWRT?

I have an OpenWrt 10.03, and I need to update my dynamic DNS account (e.g., OpenDNS or DYNDNS) when my IP changes. How can I do this from the terminal?
0
votes
1answer
164 views

OpenWRT and Current Release Support

I'd like to install OpenWRT on an Asus WL-520GU router I have a couple of Asus WL-520GU modems and Raspberry Pi (model B) boards floating around and I'd like to put some of them to use in some ...
20
votes
2answers
25k 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 ...
19
votes
5answers
23k 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 ...
8
votes
2answers
22k 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?
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 ...
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. ...
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 ...
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 "...
2
votes
1answer
7k views

Find connections per ip on an OpenWRT router?

How can I list the number of connections per client on the FORWARD chain of an OpenWRT router? I know how to list the number of connections per IP address on the router: netstat -ntu | tail -n +3 | ...
2
votes
7answers
6k views

How to upload tcpdumps in realtime to FTP?

I can do tcpdumps with this command: tcpdump -w `date +%F-%Hh-%Mm-%Ss-%N`.pcap src 10.10.10.10 or dst 10.10.10.10 Q: I have an FTP server with username: FTPUSER and password FTPPASSWORD. How can I ...
2
votes
1answer
969 views

Good OpenWRT alternative? [duplicate]

Possible Duplicate: Open Source router firmware options? I own an ASUS wl-520gU (4 LAN, 1 WAN, WiFi, 1 USB, 4mb flash rom, 16mb ram. Broadcom BCM5354 @ 240). I am going to use it as a micro-...
1
vote
1answer
1k views

How to get RX and TX bytes querying iptables?

My intention is to monitor traffic from/to wan. To achieve that, i want to calculate outgoing and ingoing bytes/second, with iptables counters as data source. Unluckily, I'm not able to understand ...
0
votes
1answer
661 views

OpenWrt can't acces host in Lan

I have managed to configure an old router (linksys WRT160NL) as a wifi client using OpenWrt 17.01.4 to connect my raspberry pi to my network and have internet. The configuration is as follows Main ...