Verificação de roteamento de tráfego VPN

Question

Eu tenho tentado rotear algum tráfego pela minha VPN e o resto diretamente pelo meu provedor, e me deparei com este artigo:

link

No entanto, decidi tentar minha mão e fazer minhas próprias regras. Acredito que realizei o que precisava sem usar tantas regras quantas as listas de artigos.

Espero encontrar alguém gentil o suficiente para revisar minhas regras e me informar se há vazamentos ou erros. Confirmei que o tráfego correto está sendo roteado através da VPN observando os endereços IP. Aqui estão minhas regras:

Roteamento:

$ ip rule
0:  from all lookup local 
32765:  from all fwmark 0x1 lookup 128 
32766:  from all lookup main 
32767:  from all lookup default 


$ ip route show table main
default via 192.168.0.1 dev eth0 
192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.129  metric 202 


$ ip route show table 128
default via 10.8.8.249 dev tun0 
10.8.8.249 dev tun0  scope link  src 10.8.8.250 
68.235.53.24 via 192.168.0.1 dev eth0 
192.168.0.0/24 dev eth0  scope link 

Mangle e tabelas NAT:

sudo iptables -t mangle -L -v
Chain PREROUTING (policy ACCEPT 2964K packets, 3153M bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain INPUT (policy ACCEPT 2964K packets, 3153M bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 1651K packets, 424M bytes)
 pkts bytes target     prot opt in     out     source               destination         
 917K  203M MARK       all  --  any    any     anywhere             anywhere             
owner UID match debian-transmission MARK set 0x1

Chain POSTROUTING (policy ACCEPT 1651K packets, 424M bytes)
 pkts bytes target     prot opt in     out     source               destination 


$ sudo iptables -t nat -L -v
Chain PREROUTING (policy ACCEPT 2814 packets, 1123K bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain INPUT (policy ACCEPT 2799 packets, 1122K bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 18894 packets, 1297K bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain POSTROUTING (policy ACCEPT 3327 packets, 299K bytes)
 pkts bytes target     prot opt in     out     source               destination         
15567  998K MASQUERADE  all  --  any    tun0    anywhere             anywhere       

Verificações de IP:

$ curl ipinfo.io/ip
xxx.xx.xxx.177
$ sudo -u debian-transmission curl ipinfo.io/ip
68.235.53.24