ืื ืกืืืืึทืฆืืข
ืืื ืืืงืืืขื ืึท ืืขืืึธ ืืืขืจืกืืข ืคืื โโS-Terra VPN ืคึผืจืึธืืืงืื ืืืขืจืกืืข 4.3 ืคึฟืึทืจ ืืจืื ืืืฉืื. ืืื ืืืืื ืฆื ืจืขืืขื ืขื ืฆื ืืืื ืื ืืฉืขื ืืขืจืืข ืืขืื ืืืขื ืืืขืจื ืืจืื ืืขืจ ื ืึธื ืกืืืืืฉืื ื ืฆื ืื ื ืืึทืข ืืืขืจืกืืข.
ืืืึทื ื ืขืก ืืื ื ืืฉื ืฉืืืขืจ, ืืืื ืืขืงื ืคืื 3 ืืื 1 ืจืขืืข ืงืึทืืืข ืืึธื ืืืื ืืขื ืื. ืืื ืืืขื ืืึธืื ืืืจ ืืื ืฆื ืืึทืงืืืขื ืืขืืึธ ืืืขืจืกืืขืก. ืืื ืืืขื ืคึผืจืืืืจื ืฆื ืฉืืขืื ืฆืืืึทืืขื ืื GRE-over-IPsec ืืื IPsec-over-GRE ืกืงืืื.
ืืื ืฆื ืืึทืงืืืขื ืึท ืืขืืึธ
ืคืื ืื ืืืื ืขืก ืืืื ืึทื ืฆื ืืึทืงืืืขื ืื ืืขืืึธ ืืืขืจืกืืข ืืืจ ืืึทืจืคึฟื:
- ืฉืจืืืื ื ืืจืืื ืฆื presale@s-terra.ru ืคืื ืืืืขืจ ืงืืจืคืืจืื ืืืจืขืก;
- ืืื ืืขื ืืจืืื, ืึธื ืืืืึทืื ืื TIN ืคืื ืืืื ืึธืจืืึทื ืืืึทืฆืืข;
- ืจืฉืืื ืื ืคึผืจืึธืืืงืื ืืื ืืืืขืจ ืงืืืึทื ืืึทืืื.
ืืขืืึธ ืืืขืจืกืืขืก ืืขื ืขื ืืืืืืง ืคึฟืึทืจ ืืจืื ืืืฉืื. ืืขืจ ืคืึทืจืงืืืคืขืจ ืืื ื ืืฉื ืืึทืืจืขื ืขืฆื ืืืืขืจ ืคืึทื ืืงืฉืึทื ืึทืืืื.
ืึทื ืคืึธืืืืื ื ืื ืืืื
ืื ืืขืืึธ ืืืขืจืกืืข ืคืื โโืื ืกืขืงืืจืืื ืืึทืืขืืืืึท ืืื ืึท ืืืื ืคืื ืึท ืืืืจืืืึทื ืืึทืฉืื. ืืื ื ืืฆื VMWare Workstation. ื ืคืืืฉืืขื ืืืง ืจืฉืืื ืคืื ืืขืฉืืืฆื ืืืืคึผืขืจืืืืืืขืจื ืืื ืืืืจืืืึทืืืืึทืืืึธื ืื ืืืืืจืึทื ืืึทื ืฅ ืืื ืื ืืืฆื ืืืืฃ ืื ืคืึทืจืงืืืคืขืจ ืก ืืืขืืืืืื.
ืืืืืขืจ ืืืจ ืึธื ืืืืื, ืืืืข ืืึธื ืึทื ืื ืคืขืืืงืืึทื ืืืืจืืืึทื ืืึทืฉืื ืืืื ืืื ื ืืฉื ื ืขืฅ ืื ืืขืจืคืืืกืื:
ืื ืืึธืืืง ืืื ืงืืึธืจ, ืืขืจ ืืึทื ืืฆืขืจ ืืืื ืืืืื ืืื ืคืืืข ืื ืืขืจืคืืืกืื ืืื ืขืจ ืืึทืจืฃ. ืืื ืฐืขื ืฆืืืฒืื ืคึฟืืจ ืืืฒึทื:
ืืืฆื ืืื ืงืึทืืขืจ ืื ืืืืจืืืึทื ืืึทืฉืื. ืืืืื ื ืึธื ืงืึทืืขืจ, ืื ืืืืืืืื ืจืืงืืืืืขืจื ืึท ืืึธืืื ืืื ืคึผืึทืจืึธื.
S-Terra Gateway ืืื ืขืืืขืืข ืงืึทื ืกืึธืืื ืืื ืคืึทืจืฉืืืขื ืข ืึทืงืึทืื ืฅ. ืืื ืืืขื ืฆืืืื ืืืืขืจ ื ืืืขืจ ืืื ืึท ืืึทืืื ืืขืจ ืึทืจืืืงื. ืืืืืขืจืืืืื:
Login as: administrator
Password: s-terra
ืืื ืืื ืื ืืฉืึทืืืืื ื ืื ืืืืขืจ. ืื ืืืืึทืืืืึทืืืึธื ืืื ืึท ืกืืงืืืึทื ืก ืคืื ืึทืงืฉืึทื ื: ืึทืจืืึทื ืึท ืืขืจืืืืืขื ืืฉ, ืืึทืฉืืขืืืงื ืึท ืืืืึทืืึทืืืฉืืงืึทื ืืจืึทืค ื ืืืขืจ ืืขื ืขืจืึทืืึธืจ (ืงืืึทืืืืึทืืืจ ืกืืืืึทืืืืืขืจ - ืืืื ืจืขืงืึธืจื ืืื 27 ืกืขืงืื ืืขืก) ืืื ืฉืึทืคึฟื ืึท ื ืขืฅ ืฆืืืื ื ืืึทืคึผืข.
ื ืขืฅ ืฆืืืื ื ืืึทืคึผืข. ืขืก ืืื ืืขืืืืจื ืืจืื ืืขืจ
ืืืขืจืกืืข 4.2 ืืึทืืจืืกื ืื ืึทืงืืืื ืืึทื ืืฆืขืจ ืืื ืึทืจืืืงืืขื:
Starting IPsec daemonโฆ.. failed
ERROR: Could not establish connection with daemon
ืึทื ืึทืงืืืื ืืึทื ืืฆืขืจ (ืืืื ืึทื ืึทื ืึธื ืืืข ืืึทื ืืฆืขืจืก) ืืื ืึท ืืึทื ืืฆืขืจ ืืืึธืก ืงืขื ืขื ืงืึทื ืคืืืืขืจ ืขืคึผืขืก ืืขืฉืืืื ื ืืื ืึธื ืืึทืงืืืืขื ืืืืฉืึทื.
ืขืคึผืขืก ืืื ืืขืืืขื ืคืึทืืฉ ืืคืืื ืืืืืขืจ ืืจืืื ื ืฆื ืงืึทื ืคืืืืขืจ ืื IP ืึทืืจืขืก ืืืืฃ ืื ืฆืืืื ื. ืขืก ืก ืึทืืข ืืืขืื ืื ื ืขืฅ ืฆืืืื ื ืืึทืคึผืข. ืขืก ืืื ื ืืืืืง ืฆื ืืึธื:
/bin/netifcfg enum > /home/map
/bin/netifcfg map /home/map
service networking restart
ืืื ืึท ืจืขืืืืืึทื, ืึท ืืึทืคึผืข ืคืื โโื ืขืฅ ืื ืืขืจืคืืืกืื ืืื ืืืฉืืคื, ืืืึธืก ืึผืืื ืึท ืืึทืคึผืื ื ืคืื ืื ื ืขืืขื ืคืื ืืฉืืืืช ืื ืืขืจืคืืืกืื (0000:02:03.0) ืืื ืืืืขืจ ืืึทืืืฉืืงืึทื ืืขืืืื ืืืฉืึทื ื ืืื ืื ืึธืคึผืขืจืืืืื ื ืกืืกืืขื (ืขืื0) ืืื ืกืืกืงืึธ-ืืื ืงืึทื ืกืึธืื (FastEthernet0/0) :
#Unique ID iface type OS name Cisco-like name
0000:02:03.0 phye eth0 FastEthernet0/0
ืืึทืืืฉืืงืึทื ืฆืืืื ื ืืขืืืื ืืืฉืึทื ื ืืขื ืขื ืืขืจืืคื ืืืืืึทืกืื. ืึทืืืึทืกืขืก ืืขื ืขื ืกืืึธืจื ืืื ืื /etc/ifaliases.cf ืืขืงืข.
ืืื ืืืขืจืกืืข 4.3, ืืืขื ืืืจ ืขืจืฉืืขืจ ืึธื ืืืื ืึท ืืืืจืืืึทื ืืึทืฉืื, ืึทื ืฆืืืื ื ืืึทืคึผืข ืืื ืืืืืึธืืึทืืืฉ ืืืฉืืคื. ืืืื ืืืจ ืืืืฉื ืื ื ืืืขืจ ืคืื ื ืขืฅ ืื ืืขืจืคืืืกืื ืืื ืื ืืืืจืืืึทื ืืึทืฉืื, ืืืืข ืืึทืื ืื ืฆืืืื ื ืืึทืคึผืข ืืืืืขืจ:
/bin/netifcfg enum > /home/map
/bin/netifcfg map /home/map
systemctl restart networking
ืกืืขืืข 1: GRE-over-IPsec
ืืื ืฆืขืืืืงืืขื ืฆืืืื ืืืืจืืืึทื ืืืืืืืืื ืืื ืืึทืฉืืืืขื ืืื ืืขืืืืื ืืื ืื ืคืืืืจ:
ืฉืจืื 1. ืงืึทื ืคืืืืขืจ ืืคึผ ืืืขื ืื ืืื ืจืืฅ
VG1(config) #
interface fa0/0
ip address 172.16.1.253 255.255.255.0
no shutdown
interface fa0/1
ip address 192.168.1.253 255.255.255.0
no shutdown
ip route 0.0.0.0 0.0.0.0 172.16.1.254VG2(config) #
interface fa0/0
ip address 172.16.1.254 255.255.255.0
no shutdown
interface fa0/1
ip address 192.168.2.254 255.255.255.0
no shutdown
ip route 0.0.0.0 0.0.0.0 172.16.1.253ืืื ืืฉืขืง IP ืงืึทื ืขืงืืืืืืื:
root@VG1:~# ping 172.16.1.254 -c 4
PING 172.16.1.254 (172.16.1.254) 56(84) bytes of data.
64 bytes from 172.16.1.254: icmp_seq=1 ttl=64 time=0.545 ms
64 bytes from 172.16.1.254: icmp_seq=2 ttl=64 time=0.657 ms
64 bytes from 172.16.1.254: icmp_seq=3 ttl=64 time=0.687 ms
64 bytes from 172.16.1.254: icmp_seq=4 ttl=64 time=0.273 ms
--- 172.16.1.254 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 0.273/0.540/0.687/0.164 msืฉืจืื 2. ืืึทืฉืืขืืืงื GRE
ืืื ื ืขืืขื ืึท ืืืืฉืคึผืื ืคืื ืืึทืฉืืขืืืงื GRE ืคึฟืื ืื ืืึทืึทืืืขืจ ืกืงืจืืคึผืก. ืืื ืืึทืื ืึท ืืขืงืข gre1 ืืื ืื /etc/network/interfaces.d ืืืขืืืืืึทืืขืจ ืืื ืื ืืื ืืึทืื.
ืคึฟืึทืจ VG1:
auto gre1
iface gre1 inet static
address 1.1.1.1
netmask 255.255.255.252
pre-up ip tunnel add gre1 mode gre remote 172.16.1.254 local 172.16.1.253 key 1 ttl 64 tos inherit
pre-up ethtool -K gre1 tx off > /dev/null
pre-up ip link set gre1 mtu 1400
post-down ip link del gre1ืคึฟืึทืจ VG2:
auto gre1
iface gre1 inet static
address 1.1.1.2
netmask 255.255.255.252
pre-up ip tunnel add gre1 mode gre remote 172.16.1.253 local 172.16.1.254 key 1 ttl 64 tos inherit
pre-up ethtool -K gre1 tx off > /dev/null
pre-up ip link set gre1 mtu 1400
post-down ip link del gre1ืืื ืืึทืคึผื ืื ืฆืืืื ื ืืื ืื ืกืืกืืขื:
root@VG1:~# ifup gre1
root@VG2:~# ifup gre1ืืื ืืฉืขืง:
root@VG1:~# ip address show
8: gre1@NONE: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1400 qdisc noqueue state UNKNOWN group default qlen 1
link/gre 172.16.1.253 peer 172.16.1.254
inet 1.1.1.1/30 brd 1.1.1.3 scope global gre1
valid_lft forever preferred_lft forever
root@VG1:~# ip tunnel show
gre0: gre/ip remote any local any ttl inherit nopmtudisc
gre1: gre/ip remote 172.16.1.254 local 172.16.1.253 ttl 64 tos inherit key 1S-Terra Gateway ืืื ืึท ืืขืืืื-ืืื ืคึผืึทืงืึทื ืกื ืืคืขืจ - tcpdump. ืืื ืืืขื ืฉืจืืึทืื ืึท ืคืึทืจืงืขืจ ืืึทืืคึผ ืฆื ืึท ืคึผืงืึทืคึผ ืืขืงืข:
root@VG2:~# tcpdump -i eth0 -w /home/dump.pcapืืื ืืืืคื ืคึผืื ื ืฆืืืืฉื GRE ืื ืืขืจืคืืืกืื:
root@VG1:~# ping 1.1.1.2 -c 4
PING 1.1.1.2 (1.1.1.2) 56(84) bytes of data.
64 bytes from 1.1.1.2: icmp_seq=1 ttl=64 time=0.918 ms
64 bytes from 1.1.1.2: icmp_seq=2 ttl=64 time=0.850 ms
64 bytes from 1.1.1.2: icmp_seq=3 ttl=64 time=0.918 ms
64 bytes from 1.1.1.2: icmp_seq=4 ttl=64 time=0.974 ms
--- 1.1.1.2 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3006ms
rtt min/avg/max/mdev = 0.850/0.915/0.974/0.043 msGRE ืืื ืขื ืืื ืึทืงืืืื ืืื ืคืืืกื ืืืง:
ืฉืจืื 3. ืขื ืงืจืืคึผื ืืื GOST GRE
ืืื ืฉืืขืื ืื ืืขืืืืืืึทืฆืืข ืืืคึผ - ืืืจื ืึทืืจืขืก. ืึธืืขื ืืึทืงืืืฉืึทื ื ืืฆื ืึท ืคึผืจืขืืขืคืื ืขื ืฉืืืกื (ืืืื ืื ืชึผื ืึธืื ืคืื ื ืืฆื, ืืืืืืึทื ืกืขืจืืืคืืงืึทืฅ ืืืื ืืืื ืืขืืืืื ื):
VG1(config)#
crypto isakmp identity address
crypto isakmp key KEY address 172.16.1.254ืืื ืฉืืขืื ืื IPsec ืคืึทืกืข ืืื ืคึผืึทืจืึทืืขืืขืจืก:
VG1(config)#
crypto isakmp policy 1
encr gost
hash gost3411-256-tc26
auth pre-share
group vko2ืืื ืฉืืขืื ืื IPsec ืคืึทืกืข ืื ืคึผืึทืจืึทืืขืืขืจืก:
VG1(config)#
crypto ipsec transform-set TSET esp-gost28147-4m-imit
mode tunnelืืื ืงืจืืืืืื ื ืึท ืขื ืงืจืืคึผืฉืึทื ืึทืงืกืขืก ืจืฉืืื. ืฆืื ืคืึทืจืงืขืจ - GRE:
VG1(config)#
ip access-list extended LIST
permit gre host 172.16.1.253 host 172.16.1.254ืืื ืืึทืื ืึท ืงืจืืคึผืืึธ ืงืึธืจื ืืื ืืื ืื ืขืก ืฆื ืื WAN ืฆืืืื ื:
VG1(config)#
crypto map CMAP 1 ipsec-isakmp
match address LIST
set transform-set TSET
set peer 172.16.1.253
interface fa0/0
crypto map CMAPืคึฟืึทืจ VG2 ืื ืงืึทื ืคืืืืขืจืืืฉืึทื ืืื ืฉืคึผืืื, ืืืคืขืจืึทื ืกืื:
VG2(config)#
crypto isakmp key KEY address 172.16.1.253
ip access-list extended LIST
permit gre host 172.16.1.254 host 172.16.1.253
crypto map CMAP 1 ipsec-isakmp
set peer 172.16.1.254ืืื ืืฉืขืง:
root@VG2:~# tcpdump -i eth0 -w /home/dump2.pcaproot@VG1:~# ping 1.1.1.2 -c 4
PING 1.1.1.2 (1.1.1.2) 56(84) bytes of data.
64 bytes from 1.1.1.2: icmp_seq=1 ttl=64 time=1128 ms
64 bytes from 1.1.1.2: icmp_seq=2 ttl=64 time=126 ms
64 bytes from 1.1.1.2: icmp_seq=3 ttl=64 time=1.07 ms
64 bytes from 1.1.1.2: icmp_seq=4 ttl=64 time=1.12 ms
--- 1.1.1.2 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3006ms
rtt min/avg/max/mdev = 1.077/314.271/1128.419/472.826 ms, pipe 2
ISAKMP/IPsec ืกืืึทืืืกืืืง:
root@VG1:~# sa_mgr show
ISAKMP sessions: 0 initiated, 0 responded
ISAKMP connections:
Num Conn-id (Local Addr,Port)-(Remote Addr,Port) State Sent Rcvd
1 1 (172.16.1.253,500)-(172.16.1.254,500) active 1086 1014
IPsec connections:
Num Conn-id (Local Addr,Port)-(Remote Addr,Port) Protocol Action Type Sent Rcvd
1 1 (172.16.1.253,*)-(172.16.1.254,*) 47 ESP tunn 480 480ืขืก ืืขื ืขื ืงืืื ืคึผืึทืงืืฅ ืืื ืื GRE ืคืึทืจืงืขืจ ืืึทืืคึผ:
ืืกืงื ื: ืื GRE-over-IPsec ืกืืขืืข ืึทืจืืขื ืจืืืืืง.
ืกืืขืืข 1.5: IPsec-over-GRE
ืืื ืืึธื ื ืื ืคึผืืึทื ืฆื ื ืืฆื IPsec-over-GRE ืืืืฃ ืื ื ืขืฅ. ืืื ืงืืืึทืื ืขืก ืืืืึทื ืืื ืืืืื ืฆื.
ืฆื ืฆืขืืืืงืืขื ืื GRE-over-IPsec ืกืืขืืข ืคืึทืจืงืขืจื, ืืืจ ืืึทืจืคึฟื ืฆื:
- ืจืืืืืง ืื ืึทืงืกืขืก ืจืฉืืื ืคึฟืึทืจ ืขื ืงืจืืคึผืฉืึทื - ืฆืื ืคืึทืจืงืขืจ ืคืื LAN1 ืฆื LAN2 ืืื ืืืืฆืข ืืืขืจืกืึท;
- ืงืึทื ืคืืืืขืจ ืจืืืื ื ืืืจื GRE;
- ืืขื ืืขื ืื ืงืจืืคึผืืึธ ืงืึธืจื ืืืืฃ ืื GRE ืฆืืืื ื.
ืืืจื ืคืขืืืงืืึทื, ืื ืกืืกืงืึธ-ืืื ืืืืืืืื ืงืึทื ืกืึธืื ืืื ื ืืฉื ืึท GRE ืฆืืืื ื. ืขืก ืืื ืืืืื ืืื ืื ืึธืคึผืขืจืืืืื ื ืกืืกืืขื.
ืืื ืืื ืึทืืื ื ืึท GRE ืฆืืืื ื ืฆื ืึท ืกืืกืงืึธ-ืืื ืงืึทื ืกืึธืื. ืฆื ืืึธื ืืึธืก, ืืื ืจืขืืึทืืืจื ืื /etc/ifaliases.cf ืืขืงืข:
interface (name="FastEthernet0/0" pattern="eth0")
interface (name="FastEthernet0/1" pattern="eth1")
interface (name="FastEthernet0/2" pattern="eth2")
interface (name="FastEthernet0/3" pattern="eth3")
interface (name="Tunnel0" pattern="gre1")
interface (name="default" pattern="*")ืืื gre1 ืืื ืื ืฆืืืื ื ืืึทืฆืืืืขื ืื ื ืืื ืื ืึธืคึผืขืจืืืืื ื ืกืืกืืขื, Tunnel0 ืืื ืื ืฆืืืื ื ืืึทืฆืืืืขื ืื ื ืืื ืื ืกืืกืงืึธ-ืืื ืงืึทื ืกืึธืื.
ืืื ืจืขืงืึทืืงืืืืจื ืื ืืึทืฉ ืคืื ืืขืจ ืืขืงืข:
root@VG1:~# integr_mgr calc -f /etc/ifaliases.cf
SUCCESS: Operation was successful.ืืืฆื ืื Tunnel0 ืฆืืืื ื ืืืืก ืืื ืื ืกืืกืงืึธ-ืืื ืงืึทื ืกืึธืื:
VG1# show run
interface Tunnel0
ip address 1.1.1.1 255.255.255.252
mtu 1400ืืื ืึทืืืฉืึทืกืืื ืื ืึทืงืกืขืก ืจืฉืืื ืคึฟืึทืจ ืขื ืงืจืืคึผืฉืึทื:
VG1(config)#
ip access-list extended LIST
permit ip 192.168.1.0 0.0.0.255 192.168.3.0 0.0.0.255ืืึทืฉืืขืืืงื ืจืืืื ื ืืืจื GRE:
VG1(config)#
no ip route 0.0.0.0 0.0.0.0 172.16.1.254
ip route 192.168.3.0 255.255.255.0 1.1.1.2ืืื ืึทืจืึธืคึผื ืขืืขื ืื ืงืจืืคึผืืึธ ืงืึธืจื ืคืื Fa0/0 ืืื ืืื ืื ืขืก ืฆื ืื GRE ืฆืืืื ื:
VG1(config)#
interface Tunnel0
crypto map CMAPืคึฟืึทืจ VG2 ืขืก ืืื ืื ืืขืืืข.
ืืื ืืฉืขืง:
root@VG2:~# tcpdump -i eth0 -w /home/dump3.pcaproot@VG1:~# ping 192.168.2.254 -I 192.168.1.253 -c 4
PING 192.168.2.254 (192.168.2.254) from 192.168.1.253 : 56(84) bytes of data.
64 bytes from 192.168.2.254: icmp_seq=1 ttl=64 time=492 ms
64 bytes from 192.168.2.254: icmp_seq=2 ttl=64 time=1.08 ms
64 bytes from 192.168.2.254: icmp_seq=3 ttl=64 time=1.06 ms
64 bytes from 192.168.2.254: icmp_seq=4 ttl=64 time=1.07 ms
--- 192.168.2.254 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3006ms
rtt min/avg/max/mdev = 1.064/124.048/492.972/212.998 msISAKMP/IPsec ืกืืึทืืืกืืืง:
root@VG1:~# sa_mgr show
ISAKMP sessions: 0 initiated, 0 responded
ISAKMP connections:
Num Conn-id (Local Addr,Port)-(Remote Addr,Port) State Sent Rcvd
1 2 (172.16.1.253,500)-(172.16.1.254,500) active 1094 1022
IPsec connections:
Num Conn-id (Local Addr,Port)-(Remote Addr,Port) Protocol Action Type Sent Rcvd
1 2 (192.168.1.0-192.168.1.255,*)-(192.168.2.0-192.168.2.255,*) * ESP tunn 352 352ืืื ืื ESP ืคืึทืจืงืขืจ ืืึทืืคึผ, ืคึผืึทืงืืฅ ืขื ืงืึทืคึผืกืึทืืืืืื ืืื GRE:
ืืกืงื ื: IPsec-over-GRE ืึทืจืืขื ืจืืืืืง.
ืจืขืืืืืึทืื ืคืื
ืืืื ืืืขืื ืงืึทืืืข ืืื ืืขื ืื. ืืื'ืืืข ืืืฉืึธืืืขื ืึทืจืึธืคึผ ืื ืกืืจืึทืงืฉืึทื ื ืคึฟืึทืจ ืืึทืงืืืขื ืึท ืืขืืึธ. ืงืึทื ืคืืืืขืจื GRE-over-IPsec ืืื ืืืคึผืืืื ืขืก ืื ืื ืืขืจืข ืืืขื ืึทืจืื.
ืื ื ืขืฅ ืฆืืืื ื ืืึทืคึผืข ืืื ืืืขืจืกืืข 4.3 ืืื ืึธืืึทืืึทืืืง! ืืื ืคึผืจืืืืจื ืืืืึทืืขืจ.
ืึทื ืึธื ืืืึธืืก ืื ืืฉืขื ืืจ
t.me/anonymous_engineer
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