kvas2-go
Better implementation of KVAS
Realized features:
- DNS Proxy (UDP)
- DNS Proxy (TCP)
- Records table
- IPTables rules to remap DNS server [1]
- Rule composer
- List loading/watching (temporary)
- IPSet integration
- Listing of interfaces
- IPTables rules to IPSet [2]
- It is not a concept now... REFACTORING TIME!!!
- HTTP API
- HTTP GUI
- Getting readable names of interfaces from Keenetic NDMS
- HTTP Auth
[1] Example
KVAS2_NAME=KVAS2
KVAS2_DNS_PORT=7548
# Создание правил
iptables -t nat -N ${KVAS2_NAME}_DNSOVERRIDE_PREROUTING
iptables -t nat -A ${KVAS2_NAME}_DNSOVERRIDE_PREROUTING -p udp --dport 53 -j REDIRECT --to-port ${KVAS2_DNS_PORT}
# Применение правил
iptables -t nat -I PREROUTING 1 -j ${KVAS2_NAME}_DNSOVERRIDE_PREROUTING
# Удаление правил
iptables -t nat -D PREROUTING -j ${KVAS2_NAME}_DNSOVERRIDE_PREROUTING
iptables -t nat -F ${KVAS2_NAME}_DNSOVERRIDE_PREROUTING
iptables -t nat -X ${KVAS2_NAME}_DNSOVERRIDE_PREROUTING
[2] Example
KVAS2_NAME=KVAS2
IPSET_TABLE=kvas2
MARK=1
TABLE=100
INTERFACE=ovpn_br0
# Создание правил
iptables -t mangle -N ${KVAS2_NAME}_ROUTING_PREROUTING
iptables -t nat -N ${KVAS2_NAME}_ROUTING_POSTROUTING
iptables -t mangle -A ${KVAS2_NAME}_ROUTING_PREROUTING -m set --match-set ${IPSET_TABLE} dst -j MARK --set-mark ${MARK}
iptables -t nat -A ${KVAS2_NAME}_ROUTING_POSTROUTING -o ${INTERFACE} -j MASQUERADE
# Применение правил
ip rule add fwmark ${MARK} table ${TABLE}
ip route add default dev ${INTERFACE} table ${TABLE}
iptables -t mangle -A PREROUTING -j ${KVAS2_NAME}_ROUTING_PREROUTING
iptables -t nat -A POSTROUTING -j ${KVAS2_NAME}_ROUTING_POSTROUTING
# Удаление правил
ip rule del fwmark ${MARK} table ${TABLE}
ip route del default dev ${INTERFACE} table ${TABLE}
iptables -t mangle -D PREROUTING -j ${KVAS2_NAME}_ROUTING_PREROUTING
iptables -t mangle -F ${KVAS2_NAME}_ROUTING_PREROUTING
iptables -t mangle -X ${KVAS2_NAME}_ROUTING_PREROUTING
iptables -t nat -D POSTROUTING -j ${KVAS2_NAME}_ROUTING_POSTROUTING
iptables -t nat -F ${KVAS2_NAME}_ROUTING_POSTROUTING
iptables -t nat -X ${KVAS2_NAME}_ROUTING_POSTROUTING