Networking

nmap

Example: 1nmap 192.168.1.1/24 Flags: Flag Meaning Effect -F Fast First 100 ports only Look for a web server, which has ports 80 and 443 open: 1nmap 192.168.1.1/24 -p 80,443 --open

havn scans ports. It's not in many repos, but if you can cargo install havn. 1havn -h 2havn -a 3domain=splint.rs 4havn -p 19-90 ${domain} That last command doesn't work reliably, so increase the number of retries (-r), or decrease concurrent requests (-c). 1havn -p 19-443 -r 6 ${domain} 2havn -p 1-1000 -c 500 -r 5 …

rclone

1 min read · networking synch backup

The manpage's 'Synopsis' provides a fast reference. We'll assume a folder in Google Drive called 'test', and local folder called 'foo'. Generate a config file with: ```sh rclone config Look at the contents of Google Drive: 1rclone ls gd:/ If rclone loses authorization: 1rclone authorization List only directories: …

Remote Desktop between Sway

1 min read · networking

Requirements ssh On the Host Install and run wayvnc. 1export WAYLAND_DISPLAY=wayland-1 2wayvnc Only the localhost can access this (highly insecure) desktop sharing, at port 5900. On the Client You'll need to disable your main modifier key on the client while accessing the host. Edit ~/.config/sway/config, and create a …

ssh

2 min read · networking

Basic ssh Try out basic ssh by accessing git.charm.sh, without needing authentication: 1ssh -t git.charm.sh Start an ssh server to try it out. The ssh server is sometimes in a package called openssh, and sometimes only in openssh-server. Once it's installed, check it's working: 1sudo systemctl status ssh If that …

ssh to phone

1 min read · networking ssh android

Install fdroid on phone. Install termux. Open fdroid, and run: 1pkg upgrade 2pkg install busybox termux-services openssh openssh-sftp-server 3source $PREFIX/etc/profile.d/start-services.sh openssh-sftp-server will mount the phone's file-system, and show you some directories in ~/storage/. Copy your PC's ssh public key …

ssh-tricks

1 min read · networking ssh tricks

Requirements ssh Mount a remote filesystem locally with fuse-sshfs: 1sshfs *user*@192.168.0.10:/home/user /tmp/mnt Unmount with: 1fusermount -u /tmp/mnt Set it up on /etc/fstab with: 1sshfs#bkp@bkp.a-server.ninja:/media/store1/bkp /backup fuse defaults,allow_other,reconnect,delay_connect 0 0 Make image backup of …

sshfs

1 min read · networking

Requirements ssh Mount 1sshfs $USER@$IP_ADDRESS:$DIR Various flags: Encryption: -C Map between local and remote user UIDs: -o idmap-user Unmount 1fusermount3 -u $DIR

Stop email impersonating your domain

1 min read · networking

Requirements DNS Record List There is nothing to stop scammers from sending email claiming to be coming from your domain. And the older it gets, the more valuable it is for spoofing. Just add these two TXT records to the DNS for your domain: Name Type Value @ TXT v=spf1 -all _dmarc TXT v=DMARC1; p=reject; The first …

tor

1 min read · networking

Get a Hostname onion hidden service guide 1sudo vim /etc/tor/torrc Uncomment the lines about /var/lib/tor/hidden_services, including port 22 (or whatever); restart tor, then go to that directory, and cat the hostname. SSH over tor Install package torsocks, and add it before ssh command, for easier use, add it to …