Host internal-*.example.net
ProxyCommand ssh -T external.example.net 'nc %h %p'
Used to ssh internal-dev.example.net
Dave Wallraff dwallraff
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| mount -t tmpfs tmpfs /mnt -o size=1024m |
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| sudo strings /dev/mem |
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| netcat -u host port | |
| # netcat -z -v domain.com 1-1000 | |
| # -z just checks connection |
dwallraff
/ python_tcpdump.py
Last active
September 14, 2016 17:10
Use python to tcpump (outputs PCAP)
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| #!/usr/bin/env python | |
| import sys,socket,struct,time | |
| sys.stdout.write(struct.pack('!IHHIIII',0xa1b2c3d4,2,4,0,0,65535,1)) | |
| s=socket.socket(socket.PF_PACKET, socket.SOCK_RAW, socket.htons(0x3)) | |
| while True: | |
| t,p=time.time(),s.recvfrom(65535) | |
| ts=int(t) | |
| tu=int((t-ts)*1000000) | |
| sys.stdout.write(struct.pack('!IIII',ts,tu,len(p[0]),len(p[0]))+p[0]) |
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| echo u > /proc/sysrq-trigger |
dwallraff
/ git_list_commiters.sh
Created
September 10, 2016 16:56
Git command to list users and e-mails from a git repo
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| git log --format="%an %ae" | sort | uniq |
dwallraff
/ port_forwarding.md
Last active
March 16, 2025 10:40
Add port forwarding to running SSH sessions
Use SSH's escape sequence <enter>~<shift>+c
user@sshhost $ ~C
ssh> L8080:localhost:8080
Forwarding port.
user@sshhost $ ~C
ssh> KL8080
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| #!/bin/bash | |
| # Do some stuff | |
| function finish { | |
| # Your cleanup code here | |
| } | |
| trap finish EXIT |
dwallraff
/ sample_color_output.sh
Created
September 13, 2016 17:06
Use `tput` to modify output in bash scripts
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| NORMAL=$(tput sgr0) | |
| GREEN=$(tput setaf 2; tput bold) | |
| YELLOW=$(tput setaf 3) | |
| RED=$(tput setaf 1) | |
| function red() { | |
| echo -e "$RED$*$NORMAL" | |
| } | |
| function green() { |