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