1234567891011121314151617181920212223242526 |
- #!/bin/bash
- # redirects ports below 1024 to a higher range using iptables, so they can be used without elevated rights
- # MySQL SIP (3306 and 5060) are left out because they are >= 1024 anyways
- # ECHO FTP HTTP HTTPS SMB (NETBIOS UDP & TCP) SSH TELNET
- protocol=( "tcp" "tcp" "tcp" "tcp" "udp" "udp" "tcp" "tcp" "tcp" "tcp")
- origin=( 7 21 80 443 137 138 139 22 23 445)
- destination=( 28144 28169 28217 28580 28274 28275 28276 28159 28160 28582) # simply offset by 1024 + 27113
- length=${#protocol[@]} # count protocol elements
- # for (( i=0; i<$length; i++ ))
- #for i in `seq 0 9` # fix for android's annoyingly limited bash
- for i in 0 1 2 3 4 5 6 7 8 9 # another fix for devices missing the seq command
- do
- # echo ${protocol[$i]} ${origin[$i]} ${destination[$i]} # debug
- # delete previous rules to avoid duplicates
- iptables -t nat -D PREROUTING -p ${protocol[$i]} --dport ${origin[$i]} -j REDIRECT --to-ports ${destination[$i]}
- iptables -t nat -D OUTPUT -p ${protocol[$i]} --dport ${destination[$i]} -j REDIRECT --to-ports ${origin[$i]}
- # add new rules
- iptables -t nat -A PREROUTING -p ${protocol[$i]} --dport ${origin[$i]} -j REDIRECT --to-ports ${destination[$i]}
- iptables -t nat -A OUTPUT -p ${protocol[$i]} --dport ${destination[$i]} -j REDIRECT --to-ports ${origin[$i]}
- done
|