Useful Commands/Security: Difference between revisions
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| Line 87: | Line 87: | ||
= Forward DNS service = | = Forward DNS service = | ||
<source lang="bash"> | |||
# Forward localhost:53(udp) to 8.8.8.8:53(udp) | |||
mkfifo outgoing.fifo | |||
mkfifo incoming.fifo | |||
sudo nc -u -l 53 > outgoing.fifo < incoming.fifo & | |||
nc -u 8.8.8.8 53 > incoming.fifo < outgoing.fifo & | |||
# Test | |||
nslookup www.facebook.com | |||
</source> | |||
<quickgv name="ncflow" theme="warm"> | <quickgv name="ncflow" theme="warm"> | ||
rankdir=TB; | rankdir=TB; | ||
| Line 92: | Line 103: | ||
CLIENT [label="DNS request\n$ nslookup www.facebook.com localhost"]; | CLIENT [label="DNS request\n$ nslookup www.facebook.com localhost"]; | ||
SS [label="UDP Service LISTEN *:53\n$ nc -u -l 53 > outgoing.fifo < incoming.fifo"]; | SS [label="UDP Service LISTEN *:53\n$ nc -u -l 53 > outgoing.fifo < incoming.fifo"]; | ||
SOCK [label="UDP Connection | SOCK [label="UDP Connection 8.8.8.8:53\n$ nc -u 8.8.8.8 53 > incoming.fifo < outgoing.fifo"]; | ||
DNS [label="DNS Server | DNS [label="DNS Server 8.8.8.8:53"]; | ||
OF [label="outgoing.fifo"]; | OF [label="outgoing.fifo"]; | ||
Revision as of 03:12, 22 February 2019
Frequently Used Commands
| TODO | Command |
|---|---|
| Indirect outgoing for PostgreSQL |
# [Private]
# localhost -> localhost:15432
# -> server:22
# -> somewhere.com:5432
ssh -NCfL 15432:somewhere.com:5432 server
# [Shared]
# any -> *:15432
# -> server:22
# -> somewhere.com:5432
ssh -NCfL *:15432:somewhere.com:5432 server
|
| Indirect outgoing for Web |
# [Private]
# localhost -> localhost:3128
# -> server:22
# -> *:*
ssh -NCfD localhost:3128 server
# [Shared]
# any -> *:3128
# -> server:22
# -> *:*
ssh -NCfD *:3128 server
|
| Share MariaDB in LAN |
# Step 1: Listen (Run at LAN)
# Listen server:13306 -> server:22
# -> localhost:3306
ssh -NCfR 13306:localhost:3306 server
# Step 2: Share (Run at Home/WAN)
# any -> server:3306
# -> server:13306
# -> server:22
# -> localhost:3306
ssh -NCfL *:3306:localhost:13306 localhost
|
| List tunnels |
# List full commands.
ps ax | awk '/ssh \-NCf/ { print $0 }'
# List settings.
ps ax | awk '/ssh \-NCf/ { print $7 }'
# List pids.
ps ax | awk '/ssh \-NCf/ { print $1 }'
# Kill all tunnels.
kill $(ps ax | awk '/ssh \-NCf/ { print $1 }')
|
| Generate key pair |
# Save as default name id_rsa, id_rsa.pub
ssh-keygen
# Save as thefuck, thefuck.pub without password
ssh-keygen -f abc -N ''
# Save as thefuck, thefuck.pub with password
ssh-keygen -f abc -N '12345'
|
| Generate public key from private key |
# Dump
ssh-keygen -yf thefuck.pem
# Save as file
ssh-keygen -yf thefuck.pem > thefuck.pub
# Save as authorized_keys (while ~/.ssh/authorized_keys didn't exist)
ssh-keygen -yf thefuck.pem > authorized_keys
# Append into authorized_keys
ssh-keygen -yf thefuck.pem >> authorized_keys
|
Forward DNS service
# Forward localhost:53(udp) to 8.8.8.8:53(udp)
mkfifo outgoing.fifo
mkfifo incoming.fifo
sudo nc -u -l 53 > outgoing.fifo < incoming.fifo &
nc -u 8.8.8.8 53 > incoming.fifo < outgoing.fifo &
# Test
nslookup www.facebook.com