модем 2500u подключен к авангарду через ppoe рвется связь с интернетом подскажите в чем проблема привожу log и adsl statistics

ode: G.DMT
Type: Interleave
Line Coding: Trellis On
Status: No Defect
Link Power State: L0

Downstream Upstream
SNR Margin (dB): 33.0 31.0
Attenuation (dB): 15.0 7.0
Output Power (dBm): 11.1 -3.8
Attainable Rate (Kbps): 12512 1276
Rate (Kbps): 128 64
K (number of bytes in DMT frame): 5 3
R (number of check bytes in RS code word): 16 16
S (RS code word size in DMT frame): 4 16
D (interleaver depth): 0 0
Delay (msec): 0 0

Super Frames: 4894 4892
Super Frame Errors: 0 0
RS Words: 83212 20791
RS Correctable Errors: 0 0
RS Uncorrectable Errors: 0 N/A

HEC Errors: 0 0
OCD Errors: 0 0
LCD Errors: 0 0
Total Cells: 24828 0
Data Cells: 47 0
Bit Errors: 0 0

Total ES: 0 0
Total SES: 0 0
Total UAS: 32 0

an 31 14:25:46 user alert kernel: Intrusion -> IN=ppp_0_55_1 OUT= MAC= SRC=91.76.20.48 DST=78.36.37.10 LEN=48 TOS=0x00 PREC=0x00 TTL=116 ID=29073 DF PROTO=TCP SPT=18928 DPT=54022 WINDOW=65535 RES=0x00 SYN URGP=0
Jan 31 14:45:08 user alert kernel: Intrusion -> IN=ppp_0_55_1 OUT= MAC= SRC=91.76.20.48 DST=78.36.37.10 LEN=48 TOS=0x00 PREC=0x00 TTL=116 ID=10595 DF PROTO=TCP SPT=20113 DPT=54022 WINDOW=65535 RES=0x00 SYN URGP=0
Jan 31 14:45:11 user alert kernel: Intrusion -> IN=ppp_0_55_1 OUT= MAC= SRC=91.76.20.48 DST=78.36.37.10 LEN=48 TOS=0x00 PREC=0x00 TTL=116 ID=10924 DF PROTO=TCP SPT=20113 DPT=54022 WINDOW=65535 RES=0x00 SYN URGP=0
Jan 31 14:45:19 user alert kernel: Intrusion -> IN=ppp_0_55_1 OUT= MAC= SRC=91.76.20.48 DST=78.36.37.10 LEN=48 TOS=0x00 PREC=0x00 TTL=116 ID=11668 DF PROTO=TCP SPT=20113 DPT=54022 WINDOW=65535 RES=0x00 SYN URGP=0
Jan 31 14:48:21 daemon crit pppd[257]: Clear IP addresses. Connection DOWN.
Jan 31 14:48:21 daemon crit pppd[257]: Clear IP addresses. PPP connection DOWN.
Jan 31 14:48:25 daemon crit pppd[257]: PPP server detected.
Jan 31 14:48:25 daemon crit pppd[257]: PPP session established.
Jan 31 14:48:26 daemon crit pppd[257]: PPP LCP UP.
Jan 31 14:48:28 daemon crit pppd[257]: Received valid IP address from server. Connection UP.
Jan 31 14:49:50 user alert kernel: Intrusion -> IN=ppp_0_55_1 OUT= MAC= SRC=78.37.26.199 DST=78.37.34.148 LEN=64 TOS=0x00 PREC=0x00 TTL=45 ID=24206 DF PROTO=TCP SPT=2535 DPT=1433 WINDOW=53760 RES=0x00 SYN URGP=0
Jan 31 14:49:52 user alert kernel: Intrusion -> IN=ppp_0_55_1 OUT= MAC= SRC=78.37.26.199 DST=78.37.34.148 LEN=64 TOS=0x00 PREC=0x00 TTL=45 ID=24373 DF PROTO=TCP SPT=2535 DPT=1433 WINDOW=53760 RES=0x00 SYN URGP=0
Jan 31 14:53:31 user crit kernel: ADSL link down
Jan 31 14:53:33 daemon crit pppd[257]: Clear IP addresses. Connection DOWN.
Jan 31 14:53:33 daemon crit pppd[257]: Clear IP addresses. PPP connection DOWN.

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