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Dobry den, |
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|
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mam 2 pracoviste s gentoo firewally, navzajem propojene openvpn tunelem. |
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|
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pracoviste A (openvpn jako server) ma lokalni subnet 192.168.2.0/24 |
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pracoviste B (openvpn jako client) ma lokalni subnet 192.168.3.0/24 |
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jako spojovaci subnet mam 172.16.1.0/29 |
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|
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Na obou stranach spustim openvpn, tunel se vytvori a servery se vidi: |
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|
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server A |
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------------ |
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tun0 Link encap:UNSPEC HWaddr |
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00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 |
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inet addr:172.16.1.1 P-t-P:172.16.1.2 Mask:255.255.255.255 |
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UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 |
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RX packets:9 errors:0 dropped:0 overruns:0 frame:0 |
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TX packets:94 errors:0 dropped:0 overruns:0 carrier:0 |
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collisions:0 txqueuelen:100 |
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RX bytes:756 (756.0 b) TX bytes:7896 (7.7 Kb) |
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|
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ping 172.16.1.6 |
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PING 172.16.1.6 (172.16.1.6) 56(84) bytes of data. |
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64 bytes from 172.16.1.6: icmp_seq=1 ttl=64 time=34.1 ms |
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64 bytes from 172.16.1.6: icmp_seq=2 ttl=64 time=33.1 ms |
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64 bytes from 172.16.1.6: icmp_seq=3 ttl=64 time=31.5 ms |
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64 bytes from 172.16.1.6: icmp_seq=4 ttl=64 time=33.7 ms |
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|
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|
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server B |
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------------ |
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tun0 Link encap:UNSPEC HWaddr |
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00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 |
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inet addr:172.16.1.6 P-t-P:172.16.1.5 Mask:255.255.255.255 |
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UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 |
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RX packets:9 errors:0 dropped:0 overruns:0 frame:0 |
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TX packets:9 errors:0 dropped:0 overruns:0 carrier:0 |
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collisions:0 txqueuelen:100 |
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RX bytes:756 (756.0 b) TX bytes:756 (756.0 b) |
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|
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ping 172.16.1.1 |
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PING 172.16.1.1 (172.16.1.1) 56(84) bytes of data. |
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64 bytes from 172.16.1.1: icmp_seq=1 ttl=64 time=64.4 ms |
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64 bytes from 172.16.1.1: icmp_seq=2 ttl=64 time=30.2 ms |
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64 bytes from 172.16.1.1: icmp_seq=3 ttl=64 time=33.1 ms |
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64 bytes from 172.16.1.1: icmp_seq=4 ttl=64 time=33.5 ms |
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|
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|
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vzajemne staticke routy na vdalene site mam nastaveny... |
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server A |
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192.168.3.0 172.16.1.2 255.255.255.0 UG 0 0 0 tun0 |
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|
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server B |
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192.168.2.0 172.16.1.5 255.255.255.0 UG 0 0 0 tun0 |
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|
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kdyz pingnu ze server B na stroj v siti A.. napr |
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ping 192.168.2.11 |
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PING 192.168.2.11 (192.168.2.11) 56(84) bytes of data. |
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64 bytes from 192.168.2.11: icmp_seq=1 ttl=127 time=51.0 ms |
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64 bytes from 192.168.2.11: icmp_seq=2 ttl=127 time=31.1 ms |
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64 bytes from 192.168.2.11: icmp_seq=3 ttl=127 time=33.1 ms |
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|
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bez problemu to projde |
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kdyz chci pingnout ze serveru A na stroj v siti B.. napr |
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ping 192.168.3.100 |
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PING 192.168.3.100 (192.168.3.100) 56(84) bytes of data. |
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|
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--- 192.168.3.100 ping statistics --- |
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5 packets transmitted, 0 received, 100% packet loss, time 3999ms |
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packety neprojdou... nechapu proc ? |
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Zkousel jsem tcpdumpem poslouchat na obou tun0 a zajimave je, ze na |
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atroji A jeste ten echo request vidim odchazet, ale na B uz mi |
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neprijde. Po nekolikahodinovem laborovani me uz opravdu nenapada v cem |
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by to mohlo byt (firewall, ip_forward i rp_filter jsou mimo hru, to |
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jsem vse zkousel vypnout/zapnout). Poradi nekdo prosim ? |
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|
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diky |
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-- |
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Lukas Kocourek |
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-- |
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